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Diffstat (limited to 'src/spdk/intel-ipsec-mb/sse/gcm_sse.asm')
| -rw-r--r-- | src/spdk/intel-ipsec-mb/sse/gcm_sse.asm | 2586 |
1 files changed, 2586 insertions, 0 deletions
diff --git a/src/spdk/intel-ipsec-mb/sse/gcm_sse.asm b/src/spdk/intel-ipsec-mb/sse/gcm_sse.asm new file mode 100644 index 000000000..d053da51f --- /dev/null +++ b/src/spdk/intel-ipsec-mb/sse/gcm_sse.asm @@ -0,0 +1,2586 @@ +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; Copyright(c) 2011-2019 Intel Corporation All rights reserved. +; +; Redistribution and use in source and binary forms, with or without +; modification, are permitted provided that the following conditions +; are met: +; * Redistributions of source code must retain the above copyright +; notice, this list of conditions and the following disclaimer. +; * Redistributions in binary form must reproduce the above copyright +; notice, this list of conditions and the following disclaimer in +; the documentation and/or other materials provided with the +; distribution. +; * Neither the name of Intel Corporation nor the names of its +; contributors may be used to endorse or promote products derived +; from this software without specific prior written permission. +; +; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; +; Authors: +; Erdinc Ozturk +; Vinodh Gopal +; James Guilford +; +; +; References: +; This code was derived and highly optimized from the code described in paper: +; Vinodh Gopal et. al. Optimized Galois-Counter-Mode Implementation on Intel Architecture Processors. August, 2010 +; +; For the shift-based reductions used in this code, we used the method described in paper: +; Shay Gueron, Michael E. Kounavis. Intel Carry-Less Multiplication Instruction and its Usage for Computing the GCM Mode. January, 2010. +; +; +; +; +; Assumptions: +; +; +; +; iv: +; 0 1 2 3 +; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | Salt (From the SA) | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | Initialization Vector | +; | (This is the sequence number from IPSec header) | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | 0x1 | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; +; +; +; AAD: +; AAD will be padded with 0 to the next 16byte multiple +; for example, assume AAD is a u32 vector +; +; if AAD is 8 bytes: +; AAD[3] = {A0, A1}; +; padded AAD in xmm register = {A1 A0 0 0} +; +; 0 1 2 3 +; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | SPI (A1) | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | 32-bit Sequence Number (A0) | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | 0x0 | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; +; AAD Format with 32-bit Sequence Number +; +; if AAD is 12 bytes: +; AAD[3] = {A0, A1, A2}; +; padded AAD in xmm register = {A2 A1 A0 0} +; +; 0 1 2 3 +; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | SPI (A2) | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | 64-bit Extended Sequence Number {A1,A0} | +; | | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; | 0x0 | +; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +; +; AAD Format with 64-bit Extended Sequence Number +; +; +; aadLen: +; Must be a multiple of 4 bytes and from the definition of the spec. +; The code additionally supports any aadLen length. +; +; TLen: +; from the definition of the spec, TLen can only be 8, 12 or 16 bytes. +; +; poly = x^128 + x^127 + x^126 + x^121 + 1 +; throughout the code, one tab and two tab indentations are used. one tab is for GHASH part, two tabs is for AES part. +; + +%include "include/os.asm" +%include "include/reg_sizes.asm" +%include "include/clear_regs.asm" +%include "include/gcm_defines.asm" +%include "include/gcm_keys_sse_avx.asm" +%include "include/memcpy.asm" + +%ifndef GCM128_MODE +%ifndef GCM192_MODE +%ifndef GCM256_MODE +%error "No GCM mode selected for gcm_sse.asm!" +%endif +%endif +%endif + +%ifdef NO_AESNI +%define SSE sse_no_aesni +%else +%define SSE sse +%endif + +%ifdef GCM128_MODE +%define FN_NAME(x,y) aes_gcm_ %+ x %+ _128 %+ y %+ SSE +%define NROUNDS 9 +%endif + +%ifdef GCM192_MODE +%define FN_NAME(x,y) aes_gcm_ %+ x %+ _192 %+ y %+ SSE +%define NROUNDS 11 +%endif + +%ifdef GCM256_MODE +%define FN_NAME(x,y) aes_gcm_ %+ x %+ _256 %+ y %+ SSE +%define NROUNDS 13 +%endif + +default rel +; need to push 4 registers into stack to maintain +%define STACK_OFFSET 8*4 + +%define TMP2 16*0 ; Temporary storage for AES State 2 (State 1 is stored in an XMM register) +%define TMP3 16*1 ; Temporary storage for AES State 3 +%define TMP4 16*2 ; Temporary storage for AES State 4 +%define TMP5 16*3 ; Temporary storage for AES State 5 +%define TMP6 16*4 ; Temporary storage for AES State 6 +%define TMP7 16*5 ; Temporary storage for AES State 7 +%define TMP8 16*6 ; Temporary storage for AES State 8 + +%define LOCAL_STORAGE 16*7 + +%ifidn __OUTPUT_FORMAT__, win64 + %define XMM_STORAGE 16*10 +%else + %define XMM_STORAGE 0 +%endif + +%define VARIABLE_OFFSET LOCAL_STORAGE + XMM_STORAGE + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; Utility Macros +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0) +; Input: A and B (128-bits each, bit-reflected) +; Output: C = A*B*x mod poly, (i.e. >>1 ) +; To compute GH = GH*HashKey mod poly, give HK = HashKey<<1 mod poly as input +; GH = GH * HK * x mod poly which is equivalent to GH*HashKey mod poly. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro GHASH_MUL 7 +%define %%GH %1 ; 16 Bytes +%define %%HK %2 ; 16 Bytes +%define %%T1 %3 +%define %%T2 %4 +%define %%T3 %5 +%define %%T4 %6 +%define %%T5 %7 + ; %%GH, %%HK hold the values for the two operands which are carry-less multiplied + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ; Karatsuba Method + movdqa %%T1, %%GH + pshufd %%T2, %%GH, 01001110b + pshufd %%T3, %%HK, 01001110b + pxor %%T2, %%GH ; %%T2 = (a1+a0) + pxor %%T3, %%HK ; %%T3 = (b1+b0) + + pclmulqdq %%T1, %%HK, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%GH, %%HK, 0x00 ; %%GH = a0*b0 + pclmulqdq %%T2, %%T3, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T2, %%GH + pxor %%T2, %%T1 ; %%T2 = a0*b1+a1*b0 + + movdqa %%T3, %%T2 + pslldq %%T3, 8 ; shift-L %%T3 2 DWs + psrldq %%T2, 8 ; shift-R %%T2 2 DWs + pxor %%GH, %%T3 + pxor %%T1, %%T2 ; <%%T1:%%GH> holds the result of the carry-less multiplication of %%GH by %%HK + + + ;first phase of the reduction + movdqa %%T2, %%GH + movdqa %%T3, %%GH + movdqa %%T4, %%GH ; move %%GH into %%T2, %%T3, %%T4 in order to perform the three shifts independently + + pslld %%T2, 31 ; packed right shifting << 31 + pslld %%T3, 30 ; packed right shifting shift << 30 + pslld %%T4, 25 ; packed right shifting shift << 25 + pxor %%T2, %%T3 ; xor the shifted versions + pxor %%T2, %%T4 + + movdqa %%T5, %%T2 + psrldq %%T5, 4 ; shift-R %%T5 1 DW + + pslldq %%T2, 12 ; shift-L %%T2 3 DWs + pxor %%GH, %%T2 ; first phase of the reduction complete + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + ;second phase of the reduction + movdqa %%T2,%%GH ; make 3 copies of %%GH (in in %%T2, %%T3, %%T4) for doing three shift operations + movdqa %%T3,%%GH + movdqa %%T4,%%GH + + psrld %%T2,1 ; packed left shifting >> 1 + psrld %%T3,2 ; packed left shifting >> 2 + psrld %%T4,7 ; packed left shifting >> 7 + pxor %%T2,%%T3 ; xor the shifted versions + pxor %%T2,%%T4 + + pxor %%T2, %%T5 + pxor %%GH, %%T2 + pxor %%GH, %%T1 ; the result is in %%T1 + + +%endmacro + + +%macro PRECOMPUTE 8 +%define %%GDATA %1 +%define %%HK %2 +%define %%T1 %3 +%define %%T2 %4 +%define %%T3 %5 +%define %%T4 %6 +%define %%T5 %7 +%define %%T6 %8 + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; Haskey_i_k holds XORed values of the low and high parts of the Haskey_i + movdqa %%T4, %%HK + pshufd %%T1, %%HK, 01001110b + pxor %%T1, %%HK + movdqu [%%GDATA + HashKey_k], %%T1 + + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^2<<1 mod poly + movdqu [%%GDATA + HashKey_2], %%T4 ; [HashKey_2] = HashKey^2<<1 mod poly + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_2_k], %%T1 + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^3<<1 mod poly + movdqu [%%GDATA + HashKey_3], %%T4 + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_3_k], %%T1 + + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^4<<1 mod poly + movdqu [%%GDATA + HashKey_4], %%T4 + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_4_k], %%T1 + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^5<<1 mod poly + movdqu [%%GDATA + HashKey_5], %%T4 + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_5_k], %%T1 + + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^6<<1 mod poly + movdqu [%%GDATA + HashKey_6], %%T4 + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_6_k], %%T1 + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^7<<1 mod poly + movdqu [%%GDATA + HashKey_7], %%T4 + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_7_k], %%T1 + + GHASH_MUL %%T4, %%HK, %%T1, %%T2, %%T3, %%T5, %%T6 ; %%T4 = HashKey^8<<1 mod poly + movdqu [%%GDATA + HashKey_8], %%T4 + pshufd %%T1, %%T4, 01001110b + pxor %%T1, %%T4 + movdqu [%%GDATA + HashKey_8_k], %%T1 + + +%endmacro + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; READ_SMALL_DATA_INPUT: Packs xmm register with data when data input is less than 16 bytes. +; Returns 0 if data has length 0. +; Input: The input data (INPUT), that data's length (LENGTH). +; Output: The packed xmm register (OUTPUT). +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro READ_SMALL_DATA_INPUT 6 +%define %%OUTPUT %1 ; %%OUTPUT is an xmm register +%define %%INPUT %2 +%define %%LENGTH %3 +%define %%END_READ_LOCATION %4 ; All this and the lower inputs are temp registers +%define %%COUNTER %5 +%define %%TMP1 %6 + + pxor %%OUTPUT, %%OUTPUT + mov %%COUNTER, %%LENGTH + mov %%END_READ_LOCATION, %%INPUT + add %%END_READ_LOCATION, %%LENGTH + xor %%TMP1, %%TMP1 + + + cmp %%COUNTER, 8 + jl %%_byte_loop_2 + pinsrq %%OUTPUT, [%%INPUT],0 ;Read in 8 bytes if they exists + je %%_done + + sub %%COUNTER, 8 + +%%_byte_loop_1: ;Read in data 1 byte at a time while data is left + shl %%TMP1, 8 ;This loop handles when 8 bytes were already read in + dec %%END_READ_LOCATION + mov BYTE(%%TMP1), BYTE [%%END_READ_LOCATION] + dec %%COUNTER + jg %%_byte_loop_1 + pinsrq %%OUTPUT, %%TMP1, 1 + jmp %%_done + +%%_byte_loop_2: ;Read in data 1 byte at a time while data is left + cmp %%COUNTER, 0 + je %%_done + shl %%TMP1, 8 ;This loop handles when no bytes were already read in + dec %%END_READ_LOCATION + mov BYTE(%%TMP1), BYTE [%%END_READ_LOCATION] + dec %%COUNTER + jg %%_byte_loop_2 + pinsrq %%OUTPUT, %%TMP1, 0 +%%_done: + +%endmacro ; READ_SMALL_DATA_INPUT + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; CALC_AAD_HASH: Calculates the hash of the data which will not be encrypted. +; Input: The input data (A_IN), that data's length (A_LEN), and the hash key (HASH_KEY). +; Output: The hash of the data (AAD_HASH). +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro CALC_AAD_HASH 15 +%define %%A_IN %1 +%define %%A_LEN %2 +%define %%AAD_HASH %3 +%define %%GDATA_KEY %4 +%define %%XTMP0 %5 ; xmm temp reg 5 +%define %%XTMP1 %6 ; xmm temp reg 5 +%define %%XTMP2 %7 +%define %%XTMP3 %8 +%define %%XTMP4 %9 +%define %%XTMP5 %10 ; xmm temp reg 5 +%define %%T1 %11 ; temp reg 1 +%define %%T2 %12 +%define %%T3 %13 +%define %%T4 %14 +%define %%T5 %15 ; temp reg 5 + + + mov %%T1, %%A_IN ; T1 = AAD + mov %%T2, %%A_LEN ; T2 = aadLen + pxor %%AAD_HASH, %%AAD_HASH + +%%_get_AAD_loop128: + cmp %%T2, 128 + jl %%_exit_AAD_loop128 + + movdqu %%XTMP0, [%%T1 + 16*0] + pshufb %%XTMP0, [rel SHUF_MASK] + + pxor %%XTMP0, %%AAD_HASH + + movdqu %%XTMP5, [%%GDATA_KEY + HashKey_8] + movdqa %%XTMP1, %%XTMP0 + movdqa %%XTMP2, %%XTMP0 + movdqa %%XTMP3, %%XTMP0 + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP1, %%XTMP5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%XTMP2, %%XTMP5, 0x00 ; %%T2 = a0*b0 + pclmulqdq %%XTMP3, %%XTMP5, 0x01 ; %%T3 = a1*b0 + pclmulqdq %%XTMP4, %%XTMP5, 0x10 ; %%T4 = a0*b1 + pxor %%XTMP3, %%XTMP4 ; %%T3 = a1*b0 + a0*b1 + +%assign i 1 +%assign j 7 +%rep 7 + movdqu %%XTMP0, [%%T1 + 16*i] + pshufb %%XTMP0, [rel SHUF_MASK] + + movdqu %%XTMP5, [%%GDATA_KEY + HashKey_ %+ j] + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x11 ; %%T1 = T1 + a1*b1 + pxor %%XTMP1, %%XTMP4 + + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x00 ; %%T2 = T2 + a0*b0 + pxor %%XTMP2, %%XTMP4 + + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x01 ; %%T3 = T3 + a1*b0 + a0*b1 + pxor %%XTMP3, %%XTMP4 + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x10 + pxor %%XTMP3, %%XTMP4 +%assign i (i + 1) +%assign j (j - 1) +%endrep + + movdqa %%XTMP4, %%XTMP3 + pslldq %%XTMP4, 8 ; shift-L 2 DWs + psrldq %%XTMP3, 8 ; shift-R 2 DWs + pxor %%XTMP2, %%XTMP4 + pxor %%XTMP1, %%XTMP3 ; accumulate the results in %%T1(M):%%T2(L) + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;first phase of the reduction + movdqa %%XTMP5, [rel POLY2] + movdqa %%XTMP0, %%XTMP5 + pclmulqdq %%XTMP0, %%XTMP2, 0x01 + pslldq %%XTMP0, 8 ; shift-L xmm2 2 DWs + pxor %%XTMP2, %%XTMP0 ; first phase of the reduction complete + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;second phase of the reduction + movdqa %%XTMP3, %%XTMP5 + pclmulqdq %%XTMP3, %%XTMP2, 0x00 + psrldq %%XTMP3, 4 ; shift-R 1 DW (Shift-R only 1-DW to obtain 2-DWs shift-R) + + movdqa %%XTMP4, %%XTMP5 + pclmulqdq %%XTMP4, %%XTMP2, 0x10 + pslldq %%XTMP4, 4 ; shift-L 1 DW (Shift-L 1-DW to obtain result with no shifts) + + pxor %%XTMP4, %%XTMP3 ; second phase of the reduction complete + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + movdqa %%AAD_HASH, %%XTMP1 + pxor %%AAD_HASH, %%XTMP4 ; the result is in %%T1 + + sub %%T2, 128 + je %%_CALC_AAD_done + + add %%T1, 128 + jmp %%_get_AAD_loop128 + +%%_exit_AAD_loop128: + cmp %%T2, 16 + jl %%_get_small_AAD_block + + ;; calculate hash_key position to start with + mov %%T3, %%T2 + and %%T3, -16 ; 1 to 7 blocks possible here + neg %%T3 + add %%T3, HashKey_1 + 16 + lea %%T3, [%%GDATA_KEY + %%T3] + + movdqu %%XTMP0, [%%T1] + pshufb %%XTMP0, [rel SHUF_MASK] + + pxor %%XTMP0, %%AAD_HASH + + movdqu %%XTMP5, [%%T3] + movdqa %%XTMP1, %%XTMP0 + movdqa %%XTMP2, %%XTMP0 + movdqa %%XTMP3, %%XTMP0 + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP1, %%XTMP5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%XTMP2, %%XTMP5, 0x00 ; %%T2 = a0*b0 + pclmulqdq %%XTMP3, %%XTMP5, 0x01 ; %%T3 = a1*b0 + pclmulqdq %%XTMP4, %%XTMP5, 0x10 ; %%T4 = a0*b1 + pxor %%XTMP3, %%XTMP4 ; %%T3 = a1*b0 + a0*b1 + + add %%T3, 16 ; move to next hashkey + add %%T1, 16 ; move to next data block + sub %%T2, 16 + cmp %%T2, 16 + jl %%_AAD_reduce + +%%_AAD_blocks: + movdqu %%XTMP0, [%%T1] + pshufb %%XTMP0, [rel SHUF_MASK] + + movdqu %%XTMP5, [%%T3] + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x11 ; %%T1 = T1 + a1*b1 + pxor %%XTMP1, %%XTMP4 + + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x00 ; %%T2 = T2 + a0*b0 + pxor %%XTMP2, %%XTMP4 + + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x01 ; %%T3 = T3 + a1*b0 + a0*b1 + pxor %%XTMP3, %%XTMP4 + movdqa %%XTMP4, %%XTMP0 + pclmulqdq %%XTMP4, %%XTMP5, 0x10 + pxor %%XTMP3, %%XTMP4 + + add %%T3, 16 ; move to next hashkey + add %%T1, 16 + sub %%T2, 16 + cmp %%T2, 16 + jl %%_AAD_reduce + jmp %%_AAD_blocks + +%%_AAD_reduce: + movdqa %%XTMP4, %%XTMP3 + pslldq %%XTMP4, 8 ; shift-L 2 DWs + psrldq %%XTMP3, 8 ; shift-R 2 DWs + pxor %%XTMP2, %%XTMP4 + pxor %%XTMP1, %%XTMP3 ; accumulate the results in %%T1(M):%%T2(L) + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;first phase of the reduction + movdqa %%XTMP5, [rel POLY2] + movdqa %%XTMP0, %%XTMP5 + pclmulqdq %%XTMP0, %%XTMP2, 0x01 + pslldq %%XTMP0, 8 ; shift-L xmm2 2 DWs + pxor %%XTMP2, %%XTMP0 ; first phase of the reduction complete + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;second phase of the reduction + movdqa %%XTMP3, %%XTMP5 + pclmulqdq %%XTMP3, %%XTMP2, 0x00 + psrldq %%XTMP3, 4 ; shift-R 1 DW (Shift-R only 1-DW to obtain 2-DWs shift-R) + + movdqa %%XTMP4, %%XTMP5 + pclmulqdq %%XTMP4, %%XTMP2, 0x10 + pslldq %%XTMP4, 4 ; shift-L 1 DW (Shift-L 1-DW to obtain result with no shifts) + + pxor %%XTMP4, %%XTMP3 ; second phase of the reduction complete + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + movdqa %%AAD_HASH, %%XTMP1 + pxor %%AAD_HASH, %%XTMP4 ; the result is in %%T1 + + or %%T2, %%T2 + je %%_CALC_AAD_done + +%%_get_small_AAD_block: + movdqu %%XTMP0, [%%GDATA_KEY + HashKey] + READ_SMALL_DATA_INPUT %%XTMP1, %%T1, %%T2, %%T3, %%T4, %%T5 + ;byte-reflect the AAD data + pshufb %%XTMP1, [rel SHUF_MASK] + pxor %%AAD_HASH, %%XTMP1 + GHASH_MUL %%AAD_HASH, %%XTMP0, %%XTMP1, %%XTMP2, %%XTMP3, %%XTMP4, %%XTMP5 + +%%_CALC_AAD_done: + +%endmacro ; CALC_AAD_HASH + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; PARTIAL_BLOCK: Handles encryption/decryption and the tag partial blocks between update calls. +; Requires the input data be at least 1 byte long. +; Input: gcm_key_data (GDATA_KEY), gcm_context_data (GDATA_CTX), input text (PLAIN_CYPH_IN), +; input text length (PLAIN_CYPH_LEN), the current data offset (DATA_OFFSET), +; and whether encoding or decoding (ENC_DEC). +; Output: A cypher of the first partial block (CYPH_PLAIN_OUT), and updated GDATA_CTX +; Clobbers rax, r10, r12, r13, r15, xmm0, xmm1, xmm2, xmm3, xmm5, xmm6, xmm9, xmm10, xmm11, xmm13 +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro PARTIAL_BLOCK 8 +%define %%GDATA_KEY %1 +%define %%GDATA_CTX %2 +%define %%CYPH_PLAIN_OUT %3 +%define %%PLAIN_CYPH_IN %4 +%define %%PLAIN_CYPH_LEN %5 +%define %%DATA_OFFSET %6 +%define %%AAD_HASH %7 +%define %%ENC_DEC %8 + mov r13, [%%GDATA_CTX + PBlockLen] + cmp r13, 0 + je %%_partial_block_done ;Leave Macro if no partial blocks + + cmp %%PLAIN_CYPH_LEN, 16 ;Read in input data without over reading + jl %%_fewer_than_16_bytes + XLDR xmm1, [%%PLAIN_CYPH_IN] ;If more than 16 bytes of data, just fill the xmm register + jmp %%_data_read + +%%_fewer_than_16_bytes: + lea r10, [%%PLAIN_CYPH_IN + %%DATA_OFFSET] + READ_SMALL_DATA_INPUT xmm1, r10, %%PLAIN_CYPH_LEN, rax, r12, r15 + mov r13, [%%GDATA_CTX + PBlockLen] + +%%_data_read: ;Finished reading in data + + + movdqu xmm9, [%%GDATA_CTX + PBlockEncKey] ;xmm9 = ctx_data.partial_block_enc_key + movdqu xmm13, [%%GDATA_KEY + HashKey] + + lea r12, [SHIFT_MASK] + + add r12, r13 ; adjust the shuffle mask pointer to be able to shift r13 bytes (16-r13 is the number of bytes in plaintext mod 16) + movdqu xmm2, [r12] ; get the appropriate shuffle mask + pshufb xmm9, xmm2 ;shift right r13 bytes + +%ifidn %%ENC_DEC, DEC + movdqa xmm3, xmm1 + pxor xmm9, xmm1 ; Cyphertext XOR E(K, Yn) + + mov r15, %%PLAIN_CYPH_LEN + add r15, r13 + sub r15, 16 ;Set r15 to be the amount of data left in CYPH_PLAIN_IN after filling the block + jge %%_no_extra_mask_1 ;Determine if if partial block is not being filled and shift mask accordingly + sub r12, r15 +%%_no_extra_mask_1: + + movdqu xmm1, [r12 + ALL_F-SHIFT_MASK] ; get the appropriate mask to mask out bottom r13 bytes of xmm9 + pand xmm9, xmm1 ; mask out bottom r13 bytes of xmm9 + + pand xmm3, xmm1 + pshufb xmm3, [SHUF_MASK] + pshufb xmm3, xmm2 + pxor %%AAD_HASH, xmm3 + + + cmp r15,0 + jl %%_partial_incomplete_1 + + GHASH_MUL %%AAD_HASH, xmm13, xmm0, xmm10, xmm11, xmm5, xmm6 ;GHASH computation for the last <16 Byte block + xor rax,rax + mov [%%GDATA_CTX + PBlockLen], rax + jmp %%_dec_done +%%_partial_incomplete_1: +%ifidn __OUTPUT_FORMAT__, win64 + mov rax, %%PLAIN_CYPH_LEN + add [%%GDATA_CTX + PBlockLen], rax +%else + add [%%GDATA_CTX + PBlockLen], %%PLAIN_CYPH_LEN +%endif +%%_dec_done: + movdqu [%%GDATA_CTX + AadHash], %%AAD_HASH + +%else + pxor xmm9, xmm1 ; Plaintext XOR E(K, Yn) + + mov r15, %%PLAIN_CYPH_LEN + add r15, r13 + sub r15, 16 ;Set r15 to be the amount of data left in CYPH_PLAIN_IN after filling the block + jge %%_no_extra_mask_2 ;Determine if if partial block is not being filled and shift mask accordingly + sub r12, r15 +%%_no_extra_mask_2: + + movdqu xmm1, [r12 + ALL_F-SHIFT_MASK] ; get the appropriate mask to mask out bottom r13 bytes of xmm9 + pand xmm9, xmm1 ; mask out bottom r13 bytes of xmm9 + + pshufb xmm9, [SHUF_MASK] + pshufb xmm9, xmm2 + pxor %%AAD_HASH, xmm9 + + cmp r15,0 + jl %%_partial_incomplete_2 + + GHASH_MUL %%AAD_HASH, xmm13, xmm0, xmm10, xmm11, xmm5, xmm6 ;GHASH computation for the last <16 Byte block + xor rax,rax + mov [%%GDATA_CTX + PBlockLen], rax + jmp %%_encode_done +%%_partial_incomplete_2: +%ifidn __OUTPUT_FORMAT__, win64 + mov rax, %%PLAIN_CYPH_LEN + add [%%GDATA_CTX + PBlockLen], rax +%else + add [%%GDATA_CTX + PBlockLen], %%PLAIN_CYPH_LEN +%endif +%%_encode_done: + movdqu [%%GDATA_CTX + AadHash], %%AAD_HASH + + pshufb xmm9, [SHUF_MASK] ; shuffle xmm9 back to output as ciphertext + pshufb xmm9, xmm2 +%endif + + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ; output encrypted Bytes + cmp r15,0 + jl %%_partial_fill + mov r12, r13 + mov r13, 16 + sub r13, r12 ; Set r13 to be the number of bytes to write out + jmp %%_count_set +%%_partial_fill: + mov r13, %%PLAIN_CYPH_LEN +%%_count_set: + movq rax, xmm9 + cmp r13, 8 + jle %%_less_than_8_bytes_left + + mov [%%CYPH_PLAIN_OUT+ %%DATA_OFFSET], rax + add %%DATA_OFFSET, 8 + psrldq xmm9, 8 + movq rax, xmm9 + sub r13, 8 +%%_less_than_8_bytes_left: + mov BYTE [%%CYPH_PLAIN_OUT + %%DATA_OFFSET], al + add %%DATA_OFFSET, 1 + shr rax, 8 + sub r13, 1 + jne %%_less_than_8_bytes_left + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%%_partial_block_done: +%endmacro ; PARTIAL_BLOCK + + +; if a = number of total plaintext bytes +; b = floor(a/16) +; %%num_initial_blocks = b mod 8; +; encrypt the initial %%num_initial_blocks blocks and apply ghash on the ciphertext +; %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r14 are used as a pointer only, not modified +; Updated AAD_HASH is returned in %%T3 + +%macro INITIAL_BLOCKS 24 +%define %%GDATA_KEY %1 +%define %%GDATA_CTX %2 +%define %%CYPH_PLAIN_OUT %3 +%define %%PLAIN_CYPH_IN %4 +%define %%LENGTH %5 +%define %%DATA_OFFSET %6 +%define %%num_initial_blocks %7 ; can be 0, 1, 2, 3, 4, 5, 6 or 7 +%define %%T1 %8 +%define %%HASH_KEY %9 +%define %%T3 %10 +%define %%T4 %11 +%define %%T5 %12 +%define %%CTR %13 +%define %%XMM1 %14 +%define %%XMM2 %15 +%define %%XMM3 %16 +%define %%XMM4 %17 +%define %%XMM5 %18 +%define %%XMM6 %19 +%define %%XMM7 %20 +%define %%XMM8 %21 +%define %%T6 %22 +%define %%T_key %23 +%define %%ENC_DEC %24 + +%assign i (8-%%num_initial_blocks) + movdqu reg(i), %%XMM8 ; move AAD_HASH to temp reg + + ; start AES for %%num_initial_blocks blocks + movdqu %%CTR, [%%GDATA_CTX + CurCount] ; %%CTR = Y0 + + +%assign i (9-%%num_initial_blocks) +%rep %%num_initial_blocks + paddd %%CTR, [ONE] ; INCR Y0 + movdqa reg(i), %%CTR + pshufb reg(i), [SHUF_MASK] ; perform a 16Byte swap +%assign i (i+1) +%endrep + +movdqu %%T_key, [%%GDATA_KEY+16*0] +%assign i (9-%%num_initial_blocks) +%rep %%num_initial_blocks + pxor reg(i),%%T_key +%assign i (i+1) +%endrep + +%assign j 1 +%rep NROUNDS ; encrypt N blocks with 13 key rounds (11 for GCM192) +movdqu %%T_key, [%%GDATA_KEY+16*j] +%assign i (9-%%num_initial_blocks) +%rep %%num_initial_blocks + aesenc reg(i),%%T_key +%assign i (i+1) +%endrep + +%assign j (j+1) +%endrep + + +movdqu %%T_key, [%%GDATA_KEY+16*j] ; encrypt with last (14th) key round (12 for GCM192) +%assign i (9-%%num_initial_blocks) +%rep %%num_initial_blocks + aesenclast reg(i),%%T_key +%assign i (i+1) +%endrep + +%assign i (9-%%num_initial_blocks) +%rep %%num_initial_blocks + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET] + pxor reg(i), %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET], reg(i) ; write back ciphertext for %%num_initial_blocks blocks + add %%DATA_OFFSET, 16 + %ifidn %%ENC_DEC, DEC + movdqa reg(i), %%T1 + %endif + pshufb reg(i), [SHUF_MASK] ; prepare ciphertext for GHASH computations +%assign i (i+1) +%endrep + + +%assign i (8-%%num_initial_blocks) +%assign j (9-%%num_initial_blocks) + +%rep %%num_initial_blocks + pxor reg(j), reg(i) + GHASH_MUL reg(j), %%HASH_KEY, %%T1, %%T3, %%T4, %%T5, %%T6 ; apply GHASH on %%num_initial_blocks blocks +%assign i (i+1) +%assign j (j+1) +%endrep + ; %%XMM8 has the current Hash Value + movdqa %%T3, %%XMM8 + + cmp %%LENGTH, 128 + jl %%_initial_blocks_done + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; Prepare 8 counter blocks and perform rounds of AES cipher on them, load plain/cipher text and store cipher/plain text. +; Keep 8 cipher text blocks for further GHASH computations (XMM1 - XMM8) +; - combine current GHASH value into block 0 (XMM1) + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM1, %%CTR + pshufb %%XMM1, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM2, %%CTR + pshufb %%XMM2, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM3, %%CTR + pshufb %%XMM3, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM4, %%CTR + pshufb %%XMM4, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM5, %%CTR + pshufb %%XMM5, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM6, %%CTR + pshufb %%XMM6, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM7, %%CTR + pshufb %%XMM7, [SHUF_MASK] ; perform a 16Byte swap + + paddd %%CTR, [ONE] ; INCR Y0 + movdqa %%XMM8, %%CTR + pshufb %%XMM8, [SHUF_MASK] ; perform a 16Byte swap + + movdqu %%T_key, [%%GDATA_KEY+16*0] + pxor %%XMM1, %%T_key + pxor %%XMM2, %%T_key + pxor %%XMM3, %%T_key + pxor %%XMM4, %%T_key + pxor %%XMM5, %%T_key + pxor %%XMM6, %%T_key + pxor %%XMM7, %%T_key + pxor %%XMM8, %%T_key + + +%assign i 1 +%rep NROUNDS ; do early (13) rounds (11 for GCM192) + movdqu %%T_key, [%%GDATA_KEY+16*i] + aesenc %%XMM1, %%T_key + aesenc %%XMM2, %%T_key + aesenc %%XMM3, %%T_key + aesenc %%XMM4, %%T_key + aesenc %%XMM5, %%T_key + aesenc %%XMM6, %%T_key + aesenc %%XMM7, %%T_key + aesenc %%XMM8, %%T_key +%assign i (i+1) +%endrep + + + movdqu %%T_key, [%%GDATA_KEY+16*i] ; do final key round + aesenclast %%XMM1, %%T_key + aesenclast %%XMM2, %%T_key + aesenclast %%XMM3, %%T_key + aesenclast %%XMM4, %%T_key + aesenclast %%XMM5, %%T_key + aesenclast %%XMM6, %%T_key + aesenclast %%XMM7, %%T_key + aesenclast %%XMM8, %%T_key + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*0] + pxor %%XMM1, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*0], %%XMM1 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM1, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*1] + pxor %%XMM2, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*1], %%XMM2 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM2, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*2] + pxor %%XMM3, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*2], %%XMM3 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM3, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*3] + pxor %%XMM4, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*3], %%XMM4 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM4, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*4] + pxor %%XMM5, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*4], %%XMM5 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM5, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*5] + pxor %%XMM6, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*5], %%XMM6 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM6, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*6] + pxor %%XMM7, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*6], %%XMM7 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM7, %%T1 + %endif + + XLDR %%T1, [%%PLAIN_CYPH_IN + %%DATA_OFFSET + 16*7] + pxor %%XMM8, %%T1 + XSTR [%%CYPH_PLAIN_OUT + %%DATA_OFFSET + 16*7], %%XMM8 + %ifidn %%ENC_DEC, DEC + movdqa %%XMM8, %%T1 + %endif + + add %%DATA_OFFSET, 128 + + pshufb %%XMM1, [SHUF_MASK] ; perform a 16Byte swap + pxor %%XMM1, %%T3 ; combine GHASHed value with the corresponding ciphertext + pshufb %%XMM2, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM3, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM4, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM5, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM6, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM7, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM8, [SHUF_MASK] ; perform a 16Byte swap + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +%%_initial_blocks_done: + + +%endmacro + + + +; encrypt 8 blocks at a time +; ghash the 8 previously encrypted ciphertext blocks +; %%GDATA (KEY), %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN are used as pointers only, not modified +; %%DATA_OFFSET is the data offset value +%macro GHASH_8_ENCRYPT_8_PARALLEL 22 +%define %%GDATA %1 +%define %%CYPH_PLAIN_OUT %2 +%define %%PLAIN_CYPH_IN %3 +%define %%DATA_OFFSET %4 +%define %%T1 %5 +%define %%T2 %6 +%define %%T3 %7 +%define %%T4 %8 +%define %%T5 %9 +%define %%T6 %10 +%define %%CTR %11 +%define %%XMM1 %12 +%define %%XMM2 %13 +%define %%XMM3 %14 +%define %%XMM4 %15 +%define %%XMM5 %16 +%define %%XMM6 %17 +%define %%XMM7 %18 +%define %%XMM8 %19 +%define %%T7 %20 +%define %%loop_idx %21 +%define %%ENC_DEC %22 + + movdqa %%T7, %%XMM1 + movdqu [rsp + TMP2], %%XMM2 + movdqu [rsp + TMP3], %%XMM3 + movdqu [rsp + TMP4], %%XMM4 + movdqu [rsp + TMP5], %%XMM5 + movdqu [rsp + TMP6], %%XMM6 + movdqu [rsp + TMP7], %%XMM7 + movdqu [rsp + TMP8], %%XMM8 + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;; Karatsuba Method + + movdqa %%T4, %%T7 + pshufd %%T6, %%T7, 01001110b + pxor %%T6, %%T7 + %ifidn %%loop_idx, in_order + paddd %%CTR, [ONE] ; INCR CNT + %else + paddd %%CTR, [ONEf] ; INCR CNT + %endif + movdqu %%T5, [%%GDATA + HashKey_8] + pclmulqdq %%T4, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T7, %%T5, 0x00 ; %%T7 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_8_k] + pclmulqdq %%T6, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + movdqa %%XMM1, %%CTR + + %ifidn %%loop_idx, in_order + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM2, %%CTR + + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM3, %%CTR + + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM4, %%CTR + + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM5, %%CTR + + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM6, %%CTR + + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM7, %%CTR + + paddd %%CTR, [ONE] ; INCR CNT + movdqa %%XMM8, %%CTR + + pshufb %%XMM1, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM2, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM3, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM4, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM5, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM6, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM7, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM8, [SHUF_MASK] ; perform a 16Byte swap + %else + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM2, %%CTR + + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM3, %%CTR + + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM4, %%CTR + + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM5, %%CTR + + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM6, %%CTR + + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM7, %%CTR + + paddd %%CTR, [ONEf] ; INCR CNT + movdqa %%XMM8, %%CTR + %endif + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + movdqu %%T1, [%%GDATA + 16*0] + pxor %%XMM1, %%T1 + pxor %%XMM2, %%T1 + pxor %%XMM3, %%T1 + pxor %%XMM4, %%T1 + pxor %%XMM5, %%T1 + pxor %%XMM6, %%T1 + pxor %%XMM7, %%T1 + pxor %%XMM8, %%T1 + + ;; %%XMM6, %%T5 hold the values for the two operands which are carry-less multiplied + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;; Karatsuba Method + movdqu %%T1, [rsp + TMP2] + movdqa %%T3, %%T1 + + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey_7] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_7_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T4, %%T1 ; accumulate the results in %%T4:%%T7, %%T6 holds the middle part + pxor %%T7, %%T3 + pxor %%T6, %%T2 + + movdqu %%T1, [%%GDATA + 16*1] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + + movdqu %%T1, [%%GDATA + 16*2] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ; Karatsuba Method + movdqu %%T1, [rsp + TMP3] + movdqa %%T3, %%T1 + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey_6] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_6_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T4, %%T1 ; accumulate the results in %%T4:%%T7, %%T6 holds the middle part + pxor %%T7, %%T3 + pxor %%T6, %%T2 + + movdqu %%T1, [%%GDATA + 16*3] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [rsp + TMP4] + movdqa %%T3, %%T1 + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey_5] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_5_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T4, %%T1 ; accumulate the results in %%T4:%%T7, %%T6 holds the middle part + pxor %%T7, %%T3 + pxor %%T6, %%T2 + + movdqu %%T1, [%%GDATA + 16*4] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [%%GDATA + 16*5] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [rsp + TMP5] + movdqa %%T3, %%T1 + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey_4] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_4_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T4, %%T1 ; accumulate the results in %%T4:%%T7, %%T6 holds the middle part + pxor %%T7, %%T3 + pxor %%T6, %%T2 + + + movdqu %%T1, [%%GDATA + 16*6] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + movdqu %%T1, [rsp + TMP6] + movdqa %%T3, %%T1 + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey_3] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_3_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T4, %%T1 ; accumulate the results in %%T4:%%T7, %%T6 holds the middle part + pxor %%T7, %%T3 + pxor %%T6, %%T2 + + movdqu %%T1, [%%GDATA + 16*7] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [rsp + TMP7] + movdqa %%T3, %%T1 + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey_2] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_2_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T4, %%T1 ; accumulate the results in %%T4:%%T7, %%T6 holds the middle part + pxor %%T7, %%T3 + pxor %%T6, %%T2 + + movdqu %%T1, [%%GDATA + 16*8] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + + ;; %%XMM8, %%T5 hold the values for the two operands which are carry-less multiplied + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ;; Karatsuba Method + movdqu %%T1, [rsp + TMP8] + movdqa %%T3, %%T1 + + pshufd %%T2, %%T3, 01001110b + pxor %%T2, %%T3 + movdqu %%T5, [%%GDATA + HashKey] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + pclmulqdq %%T3, %%T5, 0x00 ; %%T3 = a0*b0 + movdqu %%T5, [%%GDATA + HashKey_k] + pclmulqdq %%T2, %%T5, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + pxor %%T7, %%T3 + pxor %%T4, %%T1 + + movdqu %%T1, [%%GDATA + 16*9] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + +%ifdef GCM128_MODE + movdqu %%T5, [%%GDATA + 16*10] +%endif +%ifdef GCM192_MODE + movdqu %%T1, [%%GDATA + 16*10] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [%%GDATA + 16*11] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T5, [%%GDATA + 16*12] ; finish last key round +%endif +%ifdef GCM256_MODE + movdqu %%T1, [%%GDATA + 16*10] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [%%GDATA + 16*11] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [%%GDATA + 16*12] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T1, [%%GDATA + 16*13] + aesenc %%XMM1, %%T1 + aesenc %%XMM2, %%T1 + aesenc %%XMM3, %%T1 + aesenc %%XMM4, %%T1 + aesenc %%XMM5, %%T1 + aesenc %%XMM6, %%T1 + aesenc %%XMM7, %%T1 + aesenc %%XMM8, %%T1 + + movdqu %%T5, [%%GDATA + 16*14] ; finish last key round +%endif + +%assign i 0 +%assign j 1 +%rep 8 + XLDR %%T1, [%%PLAIN_CYPH_IN+%%DATA_OFFSET+16*i] + +%ifidn %%ENC_DEC, DEC + movdqa %%T3, %%T1 +%endif + + pxor %%T1, %%T5 + aesenclast reg(j), %%T1 ; XMM1:XMM8 + XSTR [%%CYPH_PLAIN_OUT+%%DATA_OFFSET+16*i], reg(j) ; Write to the Output buffer + +%ifidn %%ENC_DEC, DEC + movdqa reg(j), %%T3 +%endif +%assign i (i+1) +%assign j (j+1) +%endrep + + + + + pxor %%T2, %%T6 + pxor %%T2, %%T4 + pxor %%T2, %%T7 + + + movdqa %%T3, %%T2 + pslldq %%T3, 8 ; shift-L %%T3 2 DWs + psrldq %%T2, 8 ; shift-R %%T2 2 DWs + pxor %%T7, %%T3 + pxor %%T4, %%T2 ; accumulate the results in %%T4:%%T7 + + + + ;first phase of the reduction + movdqa %%T2, %%T7 + movdqa %%T3, %%T7 + movdqa %%T1, %%T7 ; move %%T7 into %%T2, %%T3, %%T1 in order to perform the three shifts independently + + pslld %%T2, 31 ; packed right shifting << 31 + pslld %%T3, 30 ; packed right shifting shift << 30 + pslld %%T1, 25 ; packed right shifting shift << 25 + pxor %%T2, %%T3 ; xor the shifted versions + pxor %%T2, %%T1 + + movdqa %%T5, %%T2 + psrldq %%T5, 4 ; shift-R %%T5 1 DW + + pslldq %%T2, 12 ; shift-L %%T2 3 DWs + pxor %%T7, %%T2 ; first phase of the reduction complete + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + pshufb %%XMM1, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM2, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM3, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM4, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM5, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM6, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM7, [SHUF_MASK] ; perform a 16Byte swap + pshufb %%XMM8, [SHUF_MASK] ; perform a 16Byte swap + + ;second phase of the reduction + movdqa %%T2,%%T7 ; make 3 copies of %%T7 (in in %%T2, %%T3, %%T1) for doing three shift operations + movdqa %%T3,%%T7 + movdqa %%T1,%%T7 + + psrld %%T2,1 ; packed left shifting >> 1 + psrld %%T3,2 ; packed left shifting >> 2 + psrld %%T1,7 ; packed left shifting >> 7 + pxor %%T2,%%T3 ; xor the shifted versions + pxor %%T2,%%T1 + + pxor %%T2, %%T5 + pxor %%T7, %%T2 + pxor %%T7, %%T4 ; the result is in %%T4 + + + pxor %%XMM1, %%T7 + +%endmacro + + +; GHASH the last 4 ciphertext blocks. +%macro GHASH_LAST_8 16 +%define %%GDATA %1 +%define %%T1 %2 +%define %%T2 %3 +%define %%T3 %4 +%define %%T4 %5 +%define %%T5 %6 +%define %%T6 %7 +%define %%T7 %8 +%define %%XMM1 %9 +%define %%XMM2 %10 +%define %%XMM3 %11 +%define %%XMM4 %12 +%define %%XMM5 %13 +%define %%XMM6 %14 +%define %%XMM7 %15 +%define %%XMM8 %16 + + ; Karatsuba Method + movdqa %%T6, %%XMM1 + pshufd %%T2, %%XMM1, 01001110b + pxor %%T2, %%XMM1 + movdqu %%T5, [%%GDATA + HashKey_8] + pclmulqdq %%T6, %%T5, 0x11 ; %%T6 = a1*b1 + + pclmulqdq %%XMM1, %%T5, 0x00 ; %%XMM1 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_8_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + movdqa %%T7, %%XMM1 + movdqa %%XMM1, %%T2 ; result in %%T6, %%T7, %%XMM1 + + + ; Karatsuba Method + movdqa %%T1, %%XMM2 + pshufd %%T2, %%XMM2, 01001110b + pxor %%T2, %%XMM2 + movdqu %%T5, [%%GDATA + HashKey_7] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM2, %%T5, 0x00 ; %%XMM2 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_7_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM2 + pxor %%XMM1, %%T2 ; results accumulated in %%T6, %%T7, %%XMM1 + + + ; Karatsuba Method + movdqa %%T1, %%XMM3 + pshufd %%T2, %%XMM3, 01001110b + pxor %%T2, %%XMM3 + movdqu %%T5, [%%GDATA + HashKey_6] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM3, %%T5, 0x00 ; %%XMM3 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_6_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM3 + pxor %%XMM1, %%T2 ; results accumulated in %%T6, %%T7, %%XMM1 + + ; Karatsuba Method + movdqa %%T1, %%XMM4 + pshufd %%T2, %%XMM4, 01001110b + pxor %%T2, %%XMM4 + movdqu %%T5, [%%GDATA + HashKey_5] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM4, %%T5, 0x00 ; %%XMM3 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_5_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM4 + pxor %%XMM1, %%T2 ; results accumulated in %%T6, %%T7, %%XMM1 + + ; Karatsuba Method + movdqa %%T1, %%XMM5 + pshufd %%T2, %%XMM5, 01001110b + pxor %%T2, %%XMM5 + movdqu %%T5, [%%GDATA + HashKey_4] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM5, %%T5, 0x00 ; %%XMM3 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_4_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM5 + pxor %%XMM1, %%T2 ; results accumulated in %%T6, %%T7, %%XMM1 + + ; Karatsuba Method + movdqa %%T1, %%XMM6 + pshufd %%T2, %%XMM6, 01001110b + pxor %%T2, %%XMM6 + movdqu %%T5, [%%GDATA + HashKey_3] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM6, %%T5, 0x00 ; %%XMM3 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_3_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM6 + pxor %%XMM1, %%T2 ; results accumulated in %%T6, %%T7, %%XMM1 + + ; Karatsuba Method + movdqa %%T1, %%XMM7 + pshufd %%T2, %%XMM7, 01001110b + pxor %%T2, %%XMM7 + movdqu %%T5, [%%GDATA + HashKey_2] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM7, %%T5, 0x00 ; %%XMM3 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_2_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM7 + pxor %%XMM1, %%T2 ; results accumulated in %%T6, %%T7, %%XMM1 + + + ; Karatsuba Method + movdqa %%T1, %%XMM8 + pshufd %%T2, %%XMM8, 01001110b + pxor %%T2, %%XMM8 + movdqu %%T5, [%%GDATA + HashKey] + pclmulqdq %%T1, %%T5, 0x11 ; %%T1 = a1*b1 + + pclmulqdq %%XMM8, %%T5, 0x00 ; %%XMM4 = a0*b0 + movdqu %%T4, [%%GDATA + HashKey_k] + pclmulqdq %%T2, %%T4, 0x00 ; %%T2 = (a1+a0)*(b1+b0) + + pxor %%T6, %%T1 + pxor %%T7, %%XMM8 + pxor %%T2, %%XMM1 + pxor %%T2, %%T6 + pxor %%T2, %%T7 ; middle section of the temp results combined as in Karatsuba algorithm + + + movdqa %%T4, %%T2 + pslldq %%T4, 8 ; shift-L %%T4 2 DWs + psrldq %%T2, 8 ; shift-R %%T2 2 DWs + pxor %%T7, %%T4 + pxor %%T6, %%T2 ; <%%T6:%%T7> holds the result of the accumulated carry-less multiplications + + + ;first phase of the reduction + movdqa %%T2, %%T7 + movdqa %%T3, %%T7 + movdqa %%T4, %%T7 ; move %%T7 into %%T2, %%T3, %%T4 in order to perform the three shifts independently + + pslld %%T2, 31 ; packed right shifting << 31 + pslld %%T3, 30 ; packed right shifting shift << 30 + pslld %%T4, 25 ; packed right shifting shift << 25 + pxor %%T2, %%T3 ; xor the shifted versions + pxor %%T2, %%T4 + + movdqa %%T1, %%T2 + psrldq %%T1, 4 ; shift-R %%T1 1 DW + + pslldq %%T2, 12 ; shift-L %%T2 3 DWs + pxor %%T7, %%T2 ; first phase of the reduction complete + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + ;second phase of the reduction + movdqa %%T2,%%T7 ; make 3 copies of %%T7 (in in %%T2, %%T3, %%T4) for doing three shift operations + movdqa %%T3,%%T7 + movdqa %%T4,%%T7 + + psrld %%T2,1 ; packed left shifting >> 1 + psrld %%T3,2 ; packed left shifting >> 2 + psrld %%T4,7 ; packed left shifting >> 7 + pxor %%T2,%%T3 ; xor the shifted versions + pxor %%T2,%%T4 + + pxor %%T2, %%T1 + pxor %%T7, %%T2 + pxor %%T6, %%T7 ; the result is in %%T6 + +%endmacro + +; Encryption of a single block +%macro ENCRYPT_SINGLE_BLOCK 3 +%define %%GDATA %1 +%define %%ST %2 +%define %%T1 %3 + movdqu %%T1, [%%GDATA+16*0] + pxor %%ST, %%T1 +%assign i 1 +%rep NROUNDS + movdqu %%T1, [%%GDATA+16*i] + aesenc %%ST, %%T1 +%assign i (i+1) +%endrep + movdqu %%T1, [%%GDATA+16*i] + aesenclast %%ST, %%T1 +%endmacro + + +;; Start of Stack Setup + +%macro FUNC_SAVE 0 + ;; Required for Update/GCM_ENC + ;the number of pushes must equal STACK_OFFSET + push r12 + push r13 + push r14 + push r15 + mov r14, rsp + + sub rsp, VARIABLE_OFFSET + and rsp, ~63 + +%ifidn __OUTPUT_FORMAT__, win64 + ; xmm6:xmm15 need to be maintained for Windows + movdqu [rsp + LOCAL_STORAGE + 0*16],xmm6 + movdqu [rsp + LOCAL_STORAGE + 1*16],xmm7 + movdqu [rsp + LOCAL_STORAGE + 2*16],xmm8 + movdqu [rsp + LOCAL_STORAGE + 3*16],xmm9 + movdqu [rsp + LOCAL_STORAGE + 4*16],xmm10 + movdqu [rsp + LOCAL_STORAGE + 5*16],xmm11 + movdqu [rsp + LOCAL_STORAGE + 6*16],xmm12 + movdqu [rsp + LOCAL_STORAGE + 7*16],xmm13 + movdqu [rsp + LOCAL_STORAGE + 8*16],xmm14 + movdqu [rsp + LOCAL_STORAGE + 9*16],xmm15 +%endif +%endmacro + + +%macro FUNC_RESTORE 0 + +%ifdef SAFE_DATA + clear_scratch_gps_asm + clear_scratch_xmms_sse_asm +%endif +%ifidn __OUTPUT_FORMAT__, win64 + movdqu xmm15 , [rsp + LOCAL_STORAGE + 9*16] + movdqu xmm14 , [rsp + LOCAL_STORAGE + 8*16] + movdqu xmm13 , [rsp + LOCAL_STORAGE + 7*16] + movdqu xmm12 , [rsp + LOCAL_STORAGE + 6*16] + movdqu xmm11 , [rsp + LOCAL_STORAGE + 5*16] + movdqu xmm10 , [rsp + LOCAL_STORAGE + 4*16] + movdqu xmm9 , [rsp + LOCAL_STORAGE + 3*16] + movdqu xmm8 , [rsp + LOCAL_STORAGE + 2*16] + movdqu xmm7 , [rsp + LOCAL_STORAGE + 1*16] + movdqu xmm6 , [rsp + LOCAL_STORAGE + 0*16] +%endif + +;; Required for Update/GCM_ENC + mov rsp, r14 + pop r15 + pop r14 + pop r13 + pop r12 +%endmacro + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; GCM_INIT initializes a gcm_context_data struct to prepare for encoding/decoding. +; Input: gcm_key_data * (GDATA_KEY), gcm_context_data *(GDATA_CTX), IV, +; Additional Authentication data (A_IN), Additional Data length (A_LEN). +; Output: Updated GDATA_CTX with the hash of A_IN (AadHash) and initialized other parts of GDATA. +; Clobbers rax, r10-r13 and xmm0-xmm6 +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro GCM_INIT 5 +%define %%GDATA_KEY %1 +%define %%GDATA_CTX %2 +%define %%IV %3 +%define %%A_IN %4 +%define %%A_LEN %5 +%define %%AAD_HASH xmm0 + + CALC_AAD_HASH %%A_IN, %%A_LEN, %%AAD_HASH, %%GDATA_KEY, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, r10, r11, r12, r13, rax + pxor xmm2, xmm3 + mov r10, %%A_LEN + + movdqu [%%GDATA_CTX + AadHash], %%AAD_HASH ; ctx_data.aad hash = aad_hash + mov [%%GDATA_CTX + AadLen], r10 ; ctx_data.aad_length = aad_length + xor r10, r10 + mov [%%GDATA_CTX + InLen], r10 ; ctx_data.in_length = 0 + mov [%%GDATA_CTX + PBlockLen], r10 ; ctx_data.partial_block_length = 0 + movdqu [%%GDATA_CTX + PBlockEncKey], xmm2 ; ctx_data.partial_block_enc_key = 0 + mov r10, %%IV + movdqa xmm2, [rel ONEf] ; read 12 IV bytes and pad with 0x00000001 + pinsrq xmm2, [r10], 0 + pinsrd xmm2, [r10+8], 2 + movdqu [%%GDATA_CTX + OrigIV], xmm2 ; ctx_data.orig_IV = iv + + pshufb xmm2, [SHUF_MASK] + + movdqu [%%GDATA_CTX + CurCount], xmm2 ; ctx_data.current_counter = iv +%endmacro + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; GCM_ENC_DEC Encodes/Decodes given data. Assumes that the passed gcm_context_data +; struct has been initialized by GCM_INIT. +; Requires the input data be at least 1 byte long because of READ_SMALL_INPUT_DATA. +; Input: gcm_key_data * (GDATA_KEY), gcm_context_data (GDATA_CTX), input text (PLAIN_CYPH_IN), +; input text length (PLAIN_CYPH_LEN) and whether encoding or decoding (ENC_DEC) +; Output: A cypher of the given plain text (CYPH_PLAIN_OUT), and updated GDATA_CTX +; Clobbers rax, r10-r15, and xmm0-xmm15 +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro GCM_ENC_DEC 6 +%define %%GDATA_KEY %1 +%define %%GDATA_CTX %2 +%define %%CYPH_PLAIN_OUT %3 +%define %%PLAIN_CYPH_IN %4 +%define %%PLAIN_CYPH_LEN %5 +%define %%ENC_DEC %6 +%define %%DATA_OFFSET r11 + +; Macro flow: +; calculate the number of 16byte blocks in the message +; process (number of 16byte blocks) mod 8 '%%_initial_num_blocks_is_# .. %%_initial_blocks_encrypted' +; process 8 16 byte blocks at a time until all are done '%%_encrypt_by_8_new .. %%_eight_cipher_left' +; if there is a block of less tahn 16 bytes process it '%%_zero_cipher_left .. %%_multiple_of_16_bytes' + + cmp %%PLAIN_CYPH_LEN, 0 + je %%_multiple_of_16_bytes + + xor %%DATA_OFFSET, %%DATA_OFFSET +%ifidn __OUTPUT_FORMAT__, win64 + mov r12, %%PLAIN_CYPH_LEN + add [%%GDATA_CTX + InLen], r12 ;Update length of data processed +%else + add [%%GDATA_CTX + InLen], %%PLAIN_CYPH_LEN ;Update length of data processed +%endif + movdqu xmm13, [%%GDATA_KEY + HashKey] ; xmm13 = HashKey + movdqu xmm8, [%%GDATA_CTX + AadHash] + + + PARTIAL_BLOCK %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, %%PLAIN_CYPH_LEN, %%DATA_OFFSET, xmm8, %%ENC_DEC + + mov r13, %%PLAIN_CYPH_LEN ; save the number of bytes of plaintext/ciphertext + sub r13, %%DATA_OFFSET + mov r10, r13 ;save the amount of data left to process in r10 + and r13, -16 ; r13 = r13 - (r13 mod 16) + + mov r12, r13 + shr r12, 4 + and r12, 7 + jz %%_initial_num_blocks_is_0 + + cmp r12, 7 + je %%_initial_num_blocks_is_7 + cmp r12, 6 + je %%_initial_num_blocks_is_6 + cmp r12, 5 + je %%_initial_num_blocks_is_5 + cmp r12, 4 + je %%_initial_num_blocks_is_4 + cmp r12, 3 + je %%_initial_num_blocks_is_3 + cmp r12, 2 + je %%_initial_num_blocks_is_2 + + jmp %%_initial_num_blocks_is_1 + +%%_initial_num_blocks_is_7: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 7, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16*7 + jmp %%_initial_blocks_encrypted + +%%_initial_num_blocks_is_6: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 6, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16*6 + jmp %%_initial_blocks_encrypted + +%%_initial_num_blocks_is_5: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 5, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16*5 + jmp %%_initial_blocks_encrypted + +%%_initial_num_blocks_is_4: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 4, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16*4 + jmp %%_initial_blocks_encrypted + + +%%_initial_num_blocks_is_3: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 3, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16*3 + jmp %%_initial_blocks_encrypted +%%_initial_num_blocks_is_2: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 2, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16*2 + jmp %%_initial_blocks_encrypted + +%%_initial_num_blocks_is_1: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 1, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + sub r13, 16 + jmp %%_initial_blocks_encrypted + +%%_initial_num_blocks_is_0: + INITIAL_BLOCKS %%GDATA_KEY, %%GDATA_CTX, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, r13, %%DATA_OFFSET, 0, xmm12, xmm13, xmm14, xmm15, xmm11, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm10, xmm0, %%ENC_DEC + + +%%_initial_blocks_encrypted: + cmp r13, 0 + je %%_zero_cipher_left + + sub r13, 128 + je %%_eight_cipher_left + + + + + movd r15d, xmm9 + and r15d, 255 + pshufb xmm9, [SHUF_MASK] + + +%%_encrypt_by_8_new: + cmp r15d, 255-8 + jg %%_encrypt_by_8 + + + + add r15b, 8 + GHASH_8_ENCRYPT_8_PARALLEL %%GDATA_KEY, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, %%DATA_OFFSET, xmm0, xmm10, xmm11, xmm12, xmm13, xmm14, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm15, out_order, %%ENC_DEC + add %%DATA_OFFSET, 128 + sub r13, 128 + jne %%_encrypt_by_8_new + + pshufb xmm9, [SHUF_MASK] + jmp %%_eight_cipher_left + +%%_encrypt_by_8: + pshufb xmm9, [SHUF_MASK] + add r15b, 8 + GHASH_8_ENCRYPT_8_PARALLEL %%GDATA_KEY, %%CYPH_PLAIN_OUT, %%PLAIN_CYPH_IN, %%DATA_OFFSET, xmm0, xmm10, xmm11, xmm12, xmm13, xmm14, xmm9, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm15, in_order, %%ENC_DEC + pshufb xmm9, [SHUF_MASK] + add %%DATA_OFFSET, 128 + sub r13, 128 + jne %%_encrypt_by_8_new + + pshufb xmm9, [SHUF_MASK] + + + + +%%_eight_cipher_left: + GHASH_LAST_8 %%GDATA_KEY, xmm0, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8 + + +%%_zero_cipher_left: + movdqu [%%GDATA_CTX + AadHash], xmm14 + movdqu [%%GDATA_CTX + CurCount], xmm9 + + mov r13, r10 + and r13, 15 ; r13 = (%%PLAIN_CYPH_LEN mod 16) + + je %%_multiple_of_16_bytes + + mov [%%GDATA_CTX + PBlockLen], r13 ; my_ctx.data.partial_blck_length = r13 + ; handle the last <16 Byte block seperately + + paddd xmm9, [ONE] ; INCR CNT to get Yn + movdqu [%%GDATA_CTX + CurCount], xmm9 ; my_ctx.data.current_counter = xmm9 + pshufb xmm9, [SHUF_MASK] + ENCRYPT_SINGLE_BLOCK %%GDATA_KEY, xmm9, xmm2 ; E(K, Yn) + movdqu [%%GDATA_CTX + PBlockEncKey], xmm9 ; my_ctx_data.partial_block_enc_key = xmm9 + + cmp %%PLAIN_CYPH_LEN, 16 + jge %%_large_enough_update + + lea r10, [%%PLAIN_CYPH_IN + %%DATA_OFFSET] + READ_SMALL_DATA_INPUT xmm1, r10, r13, r12, r15, rax + lea r12, [SHIFT_MASK + 16] + sub r12, r13 + jmp %%_data_read + +%%_large_enough_update: + sub %%DATA_OFFSET, 16 + add %%DATA_OFFSET, r13 + + movdqu xmm1, [%%PLAIN_CYPH_IN+%%DATA_OFFSET] ; receive the last <16 Byte block + + sub %%DATA_OFFSET, r13 + add %%DATA_OFFSET, 16 + + lea r12, [SHIFT_MASK + 16] + sub r12, r13 ; adjust the shuffle mask pointer to be able to shift 16-r13 bytes (r13 is the number of bytes in plaintext mod 16) + movdqu xmm2, [r12] ; get the appropriate shuffle mask + pshufb xmm1, xmm2 ; shift right 16-r13 bytes +%%_data_read: + %ifidn %%ENC_DEC, DEC + movdqa xmm2, xmm1 + pxor xmm9, xmm1 ; Plaintext XOR E(K, Yn) + movdqu xmm1, [r12 + ALL_F - SHIFT_MASK] ; get the appropriate mask to mask out top 16-r13 bytes of xmm9 + pand xmm9, xmm1 ; mask out top 16-r13 bytes of xmm9 + pand xmm2, xmm1 + pshufb xmm2, [SHUF_MASK] + pxor xmm14, xmm2 + movdqu [%%GDATA_CTX + AadHash], xmm14 + + %else + pxor xmm9, xmm1 ; Plaintext XOR E(K, Yn) + movdqu xmm1, [r12 + ALL_F - SHIFT_MASK] ; get the appropriate mask to mask out top 16-r13 bytes of xmm9 + pand xmm9, xmm1 ; mask out top 16-r13 bytes of xmm9 + pshufb xmm9, [SHUF_MASK] + pxor xmm14, xmm9 + movdqu [%%GDATA_CTX + AadHash], xmm14 + + pshufb xmm9, [SHUF_MASK] ; shuffle xmm9 back to output as ciphertext + %endif + + + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + ; output r13 Bytes + movq rax, xmm9 + cmp r13, 8 + jle %%_less_than_8_bytes_left + + mov [%%CYPH_PLAIN_OUT + %%DATA_OFFSET], rax + add %%DATA_OFFSET, 8 + psrldq xmm9, 8 + movq rax, xmm9 + sub r13, 8 + +%%_less_than_8_bytes_left: + mov BYTE [%%CYPH_PLAIN_OUT + %%DATA_OFFSET], al + add %%DATA_OFFSET, 1 + shr rax, 8 + sub r13, 1 + jne %%_less_than_8_bytes_left + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +%%_multiple_of_16_bytes: + +%endmacro + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; GCM_COMPLETE Finishes Encyrption/Decryption of last partial block after GCM_UPDATE finishes. +; Input: A gcm_key_data * (GDATA_KEY), gcm_context_data * (GDATA_CTX) and +; whether encoding or decoding (ENC_DEC). +; Output: Authorization Tag (AUTH_TAG) and Authorization Tag length (AUTH_TAG_LEN) +; Clobbers rax, r10-r12, and xmm0, xmm1, xmm5, xmm6, xmm9, xmm11, xmm14, xmm15 +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +%macro GCM_COMPLETE 5 +%define %%GDATA_KEY %1 +%define %%GDATA_CTX %2 +%define %%AUTH_TAG %3 +%define %%AUTH_TAG_LEN %4 +%define %%ENC_DEC %5 +%define %%PLAIN_CYPH_LEN rax + + mov r12, [%%GDATA_CTX + PBlockLen] ; r12 = aadLen (number of bytes) + movdqu xmm14, [%%GDATA_CTX + AadHash] + movdqu xmm13, [%%GDATA_KEY + HashKey] + + cmp r12, 0 + + je %%_partial_done + + GHASH_MUL xmm14, xmm13, xmm0, xmm10, xmm11, xmm5, xmm6 ;GHASH computation for the last <16 Byte block + movdqu [%%GDATA_CTX + AadHash], xmm14 + +%%_partial_done: + + mov r12, [%%GDATA_CTX + AadLen] ; r12 = aadLen (number of bytes) + mov %%PLAIN_CYPH_LEN, [%%GDATA_CTX + InLen] + + shl r12, 3 ; convert into number of bits + movd xmm15, r12d ; len(A) in xmm15 + + shl %%PLAIN_CYPH_LEN, 3 ; len(C) in bits (*128) + movq xmm1, %%PLAIN_CYPH_LEN + pslldq xmm15, 8 ; xmm15 = len(A)|| 0x0000000000000000 + pxor xmm15, xmm1 ; xmm15 = len(A)||len(C) + + pxor xmm14, xmm15 + GHASH_MUL xmm14, xmm13, xmm0, xmm10, xmm11, xmm5, xmm6 ; final GHASH computation + pshufb xmm14, [SHUF_MASK] ; perform a 16Byte swap + + movdqu xmm9, [%%GDATA_CTX + OrigIV] ; xmm9 = Y0 + + ENCRYPT_SINGLE_BLOCK %%GDATA_KEY, xmm9, xmm2 ; E(K, Y0) + + pxor xmm9, xmm14 + + + +%%_return_T: + mov r10, %%AUTH_TAG ; r10 = authTag + mov r11, %%AUTH_TAG_LEN ; r11 = auth_tag_len + + cmp r11, 16 + je %%_T_16 + + cmp r11, 12 + je %%_T_12 + + cmp r11, 8 + je %%_T_8 + + simd_store_sse r10, xmm9, r11, r12, rax + jmp %%_return_T_done +%%_T_8: + movq rax, xmm9 + mov [r10], rax + jmp %%_return_T_done +%%_T_12: + movq rax, xmm9 + mov [r10], rax + psrldq xmm9, 8 + movd eax, xmm9 + mov [r10 + 8], eax + jmp %%_return_T_done +%%_T_16: + movdqu [r10], xmm9 + +%%_return_T_done: + +%ifdef SAFE_DATA + ;; Clear sensitive data from context structure + pxor xmm0, xmm0 + movdqu [%%GDATA_CTX + AadHash], xmm0 + movdqu [%%GDATA_CTX + PBlockEncKey], xmm0 +%endif + +%endmacro ;GCM_COMPLETE + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_precomp_128_sse / aes_gcm_precomp_192_sse / aes_gcm_precomp_256_sse +; (struct gcm_key_data *key_data); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(precomp,_),function,) +FN_NAME(precomp,_): + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_precomp +%endif + + push r12 + push r13 + push r14 + push r15 + + mov r14, rsp + + + + sub rsp, VARIABLE_OFFSET + and rsp, ~63 ; align rsp to 64 bytes + +%ifidn __OUTPUT_FORMAT__, win64 + ; only xmm6 needs to be maintained + movdqu [rsp + LOCAL_STORAGE + 0*16],xmm6 +%endif + + pxor xmm6, xmm6 + ENCRYPT_SINGLE_BLOCK arg1, xmm6, xmm2 ; xmm6 = HashKey + + pshufb xmm6, [SHUF_MASK] + ;;;;;;;;;;;;;;; PRECOMPUTATION of HashKey<<1 mod poly from the HashKey;;;;;;;;;;;;;;; + movdqa xmm2, xmm6 + psllq xmm6, 1 + psrlq xmm2, 63 + movdqa xmm1, xmm2 + pslldq xmm2, 8 + psrldq xmm1, 8 + por xmm6, xmm2 + ;reduction + pshufd xmm2, xmm1, 00100100b + pcmpeqd xmm2, [TWOONE] + pand xmm2, [POLY] + pxor xmm6, xmm2 ; xmm6 holds the HashKey<<1 mod poly + ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + movdqu [arg1 + HashKey], xmm6 ; store HashKey<<1 mod poly + + + PRECOMPUTE arg1, xmm6, xmm0, xmm1, xmm2, xmm3, xmm4, xmm5 + +%ifdef SAFE_DATA + clear_scratch_gps_asm + clear_scratch_xmms_sse_asm +%endif +%ifidn __OUTPUT_FORMAT__, win64 + movdqu xmm6, [rsp + LOCAL_STORAGE + 0*16] +%endif + mov rsp, r14 + + pop r15 + pop r14 + pop r13 + pop r12 + +exit_precomp: + + ret + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_init_128_sse / aes_gcm_init_192_sse / aes_gcm_init_256_sse ( +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *iv, +; const u8 *aad, +; u64 aad_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(init,_),function,) +FN_NAME(init,_): + push r12 + push r13 +%ifidn __OUTPUT_FORMAT__, win64 + push r14 + push r15 + mov r14, rsp + ; xmm6:xmm15 need to be maintained for Windows + sub rsp, 1*16 + movdqu [rsp + 0*16], xmm6 +%endif + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_init + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_init + + ;; Check IV != NULL + cmp arg3, 0 + jz exit_init + + ;; Check if aad_len == 0 + cmp arg5, 0 + jz skip_aad_check_init + + ;; Check aad != NULL (aad_len != 0) + cmp arg4, 0 + jz exit_init + +skip_aad_check_init: +%endif + GCM_INIT arg1, arg2, arg3, arg4, arg5 + +%ifdef SAFE_DATA + clear_scratch_gps_asm + clear_scratch_xmms_sse_asm +%endif +exit_init: + +%ifidn __OUTPUT_FORMAT__, win64 + movdqu xmm6 , [rsp + 0*16] + mov rsp, r14 + pop r15 + pop r14 +%endif + pop r13 + pop r12 + ret + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_enc_128_update_sse / aes_gcm_enc_192_update_sse / aes_gcm_enc_256_update_sse +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *out, +; const u8 *in, +; u64 plaintext_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(enc,_update_),function,) +FN_NAME(enc,_update_): + + FUNC_SAVE + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_update_enc + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_update_enc + + ;; Check if plaintext_len == 0 + cmp arg5, 0 + jz skip_in_out_check_update_enc + + ;; Check out != NULL (plaintext_len != 0) + cmp arg3, 0 + jz exit_update_enc + + ;; Check in != NULL (plaintext_len != 0) + cmp arg4, 0 + jz exit_update_enc + +skip_in_out_check_update_enc: +%endif + GCM_ENC_DEC arg1, arg2, arg3, arg4, arg5, ENC + +exit_update_enc: + FUNC_RESTORE + + ret + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_dec_128_update_sse / aes_gcm_dec_192_update_sse / aes_gcm_dec_256_update_sse +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *out, +; const u8 *in, +; u64 plaintext_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(dec,_update_),function,) +FN_NAME(dec,_update_): + + FUNC_SAVE + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_update_dec + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_update_dec + + ;; Check if plaintext_len == 0 + cmp arg5, 0 + jz skip_in_out_check_update_dec + + ;; Check out != NULL (plaintext_len != 0) + cmp arg3, 0 + jz exit_update_dec + + ;; Check in != NULL (plaintext_len != 0) + cmp arg4, 0 + jz exit_update_dec + +skip_in_out_check_update_dec: +%endif + + GCM_ENC_DEC arg1, arg2, arg3, arg4, arg5, DEC + +exit_update_dec: + FUNC_RESTORE + + ret + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_enc_128_finalize_sse / aes_gcm_enc_192_finalize_sse / aes_gcm_enc_256_finalize_sse +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *auth_tag, +; u64 auth_tag_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(enc,_finalize_),function,) +FN_NAME(enc,_finalize_): + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_enc_fin + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_enc_fin + + ;; Check auth_tag != NULL + cmp arg3, 0 + jz exit_enc_fin + + ;; Check auth_tag_len == 0 or > 16 + cmp arg4, 0 + jz exit_enc_fin + + cmp arg4, 16 + ja exit_enc_fin +%endif + push r12 + +%ifidn __OUTPUT_FORMAT__, win64 + ; xmm6:xmm15 need to be maintained for Windows + sub rsp, 5*16 + movdqu [rsp + 0*16],xmm6 + movdqu [rsp + 1*16],xmm9 + movdqu [rsp + 2*16],xmm11 + movdqu [rsp + 3*16],xmm14 + movdqu [rsp + 4*16],xmm15 +%endif + + GCM_COMPLETE arg1, arg2, arg3, arg4, ENC + +%ifdef SAFE_DATA + clear_scratch_gps_asm + clear_scratch_xmms_sse_asm +%endif +%ifidn __OUTPUT_FORMAT__, win64 + movdqu xmm15 , [rsp + 4*16] + movdqu xmm14 , [rsp+ 3*16] + movdqu xmm11 , [rsp + 2*16] + movdqu xmm9 , [rsp + 1*16] + movdqu xmm6 , [rsp + 0*16] + add rsp, 5*16 +%endif + + pop r12 + +exit_enc_fin: + ret + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_dec_128_finalize_sse / aes_gcm_dec_192_finalize_sse / aes_gcm_dec_256_finalize_sse +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *auth_tag, +; u64 auth_tag_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(dec,_finalize_),function,) +FN_NAME(dec,_finalize_): + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_dec_fin + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_dec_fin + + ;; Check auth_tag != NULL + cmp arg3, 0 + jz exit_dec_fin + + ;; Check auth_tag_len == 0 or > 16 + cmp arg4, 0 + jz exit_dec_fin + + cmp arg4, 16 + ja exit_dec_fin +%endif + + push r12 + +%ifidn __OUTPUT_FORMAT__, win64 + ; xmm6:xmm15 need to be maintained for Windows + sub rsp, 5*16 + movdqu [rsp + 0*16],xmm6 + movdqu [rsp + 1*16],xmm9 + movdqu [rsp + 2*16],xmm11 + movdqu [rsp + 3*16],xmm14 + movdqu [rsp + 4*16],xmm15 +%endif + GCM_COMPLETE arg1, arg2, arg3, arg4, DEC + +%ifdef SAFE_DATA + clear_scratch_gps_asm + clear_scratch_xmms_sse_asm +%endif +%ifidn __OUTPUT_FORMAT__, win64 + movdqu xmm15 , [rsp + 4*16] + movdqu xmm14 , [rsp+ 3*16] + movdqu xmm11 , [rsp + 2*16] + movdqu xmm9 , [rsp + 1*16] + movdqu xmm6 , [rsp + 0*16] + add rsp, 5*16 +%endif + + pop r12 + +exit_dec_fin: + ret + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_enc_128_sse / aes_gcm_enc_192_sse / aes_gcm_enc_256_sse +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *out, +; const u8 *in, +; u64 plaintext_len, +; u8 *iv, +; const u8 *aad, +; u64 aad_len, +; u8 *auth_tag, +; u64 auth_tag_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(enc,_),function,) +FN_NAME(enc,_): + + FUNC_SAVE + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_enc + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_enc + + ;; Check IV != NULL + cmp arg6, 0 + jz exit_enc + + ;; Check auth_tag != NULL + cmp arg9, 0 + jz exit_enc + + ;; Check auth_tag_len == 0 or > 16 + cmp arg10, 0 + jz exit_enc + + cmp arg10, 16 + ja exit_enc + + ;; Check if plaintext_len == 0 + cmp arg5, 0 + jz skip_in_out_check_enc + + ;; Check out != NULL (plaintext_len != 0) + cmp arg3, 0 + jz exit_enc + + ;; Check in != NULL (plaintext_len != 0) + cmp arg4, 0 + jz exit_enc + +skip_in_out_check_enc: + ;; Check if aad_len == 0 + cmp arg8, 0 + jz skip_aad_check_enc + + ;; Check aad != NULL (aad_len != 0) + cmp arg7, 0 + jz exit_enc + +skip_aad_check_enc: +%endif + GCM_INIT arg1, arg2, arg6, arg7, arg8 + + GCM_ENC_DEC arg1, arg2, arg3, arg4, arg5, ENC + + GCM_COMPLETE arg1, arg2, arg9, arg10, ENC + +exit_enc: + FUNC_RESTORE + + ret + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;void aes_gcm_dec_128_sse / aes_gcm_dec_192_sse / aes_gcm_dec_256_sse +; const struct gcm_key_data *key_data, +; struct gcm_context_data *context_data, +; u8 *out, +; const u8 *in, +; u64 plaintext_len, +; u8 *iv, +; const u8 *aad, +; u64 aad_len, +; u8 *auth_tag, +; u64 auth_tag_len); +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +MKGLOBAL(FN_NAME(dec,_),function,) +FN_NAME(dec,_): + + FUNC_SAVE + +%ifdef SAFE_PARAM + ;; Check key_data != NULL + cmp arg1, 0 + jz exit_dec + + ;; Check context_data != NULL + cmp arg2, 0 + jz exit_dec + + ;; Check IV != NULL + cmp arg6, 0 + jz exit_dec + + ;; Check auth_tag != NULL + cmp arg9, 0 + jz exit_dec + + ;; Check auth_tag_len == 0 or > 16 + cmp arg10, 0 + jz exit_dec + + cmp arg10, 16 + ja exit_dec + + ;; Check if plaintext_len == 0 + cmp arg5, 0 + jz skip_in_out_check_dec + + ;; Check out != NULL (plaintext_len != 0) + cmp arg3, 0 + jz exit_dec + + ;; Check in != NULL (plaintext_len != 0) + cmp arg4, 0 + jz exit_dec + +skip_in_out_check_dec: + ;; Check if aad_len == 0 + cmp arg8, 0 + jz skip_aad_check_dec + + ;; Check aad != NULL (aad_len != 0) + cmp arg7, 0 + jz exit_dec + +skip_aad_check_dec: +%endif + + GCM_INIT arg1, arg2, arg6, arg7, arg8 + + GCM_ENC_DEC arg1, arg2, arg3, arg4, arg5, DEC + + GCM_COMPLETE arg1, arg2, arg9, arg10, DEC + +exit_dec: + FUNC_RESTORE + + ret + +%ifdef LINUX +section .note.GNU-stack noalloc noexec nowrite progbits +%endif |