diff options
Diffstat (limited to 'src/VBox/Runtime/common/checksum/alt-sha512.cpp')
| -rw-r--r-- | src/VBox/Runtime/common/checksum/alt-sha512.cpp | 795 |
1 files changed, 795 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/checksum/alt-sha512.cpp b/src/VBox/Runtime/common/checksum/alt-sha512.cpp new file mode 100644 index 00000000..166889eb --- /dev/null +++ b/src/VBox/Runtime/common/checksum/alt-sha512.cpp @@ -0,0 +1,795 @@ +/* $Id: alt-sha512.cpp $ */ +/** @file + * IPRT - SHA-512 and SHA-384 hash functions, Alternative Implementation. + */ + +/* + * Copyright (C) 2009-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** The SHA-512 block size (in bytes). */ +#define RTSHA512_BLOCK_SIZE 128U + +/** Enables the unrolled code. */ +#define RTSHA512_UNROLLED 1 + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "internal/iprt.h" +#include <iprt/types.h> +#include <iprt/assert.h> +#include <iprt/asm.h> +#include <iprt/string.h> + + +/** Our private context structure. */ +typedef struct RTSHA512ALTPRIVATECTX +{ + /** The W array. + * Buffering happens in the first 16 words, converted from big endian to host + * endian immediately before processing. The amount of buffered data is kept + * in the 6 least significant bits of cbMessage. */ + uint64_t auW[80]; + /** The message length (in bytes). */ + RTUINT128U cbMessage; + /** The 8 hash values. */ + uint64_t auH[8]; +} RTSHA512ALTPRIVATECTX; + +#define RT_SHA512_PRIVATE_ALT_CONTEXT +#include <iprt/sha.h> + + +AssertCompile(RT_SIZEOFMEMB(RTSHA512CONTEXT, abPadding) >= RT_SIZEOFMEMB(RTSHA512CONTEXT, AltPrivate)); +AssertCompileMemberSize(RTSHA512ALTPRIVATECTX, auH, RTSHA512_HASH_SIZE); + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +#ifndef RTSHA512_UNROLLED +/** The K constants. */ +static uint64_t const g_auKs[] = +{ + UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc), + UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118), + UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2), + UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694), + UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65), + UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5), + UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4), + UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70), + UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df), + UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b), + UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001), UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30), + UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8), + UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8), + UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3), + UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec), + UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b), + UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178), + UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b), + UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c), + UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817), +}; +#endif /* !RTSHA512_UNROLLED */ + + + +RTDECL(void) RTSha512Init(PRTSHA512CONTEXT pCtx) +{ + pCtx->AltPrivate.cbMessage.s.Lo = 0; + pCtx->AltPrivate.cbMessage.s.Hi = 0; + pCtx->AltPrivate.auH[0] = UINT64_C(0x6a09e667f3bcc908); + pCtx->AltPrivate.auH[1] = UINT64_C(0xbb67ae8584caa73b); + pCtx->AltPrivate.auH[2] = UINT64_C(0x3c6ef372fe94f82b); + pCtx->AltPrivate.auH[3] = UINT64_C(0xa54ff53a5f1d36f1); + pCtx->AltPrivate.auH[4] = UINT64_C(0x510e527fade682d1); + pCtx->AltPrivate.auH[5] = UINT64_C(0x9b05688c2b3e6c1f); + pCtx->AltPrivate.auH[6] = UINT64_C(0x1f83d9abfb41bd6b); + pCtx->AltPrivate.auH[7] = UINT64_C(0x5be0cd19137e2179); +} +RT_EXPORT_SYMBOL(RTSha512Init); + + +/** Function 4.8. */ +DECL_FORCE_INLINE(uint64_t) rtSha512Ch(uint64_t uX, uint64_t uY, uint64_t uZ) +{ +#if 1 + /* Optimization that saves one operation and probably a temporary variable. */ + uint64_t uResult = uY; + uResult ^= uZ; + uResult &= uX; + uResult ^= uZ; + return uResult; +#else + /* The original. */ + uint64_t uResult = uX & uY; + uResult ^= ~uX & uZ; + return uResult; +#endif +} + + +/** Function 4.9. */ +DECL_FORCE_INLINE(uint64_t) rtSha512Maj(uint64_t uX, uint64_t uY, uint64_t uZ) +{ +#if 1 + /* Optimization that save one operation and probably a temporary variable. */ + uint64_t uResult = uY; + uResult ^= uZ; + uResult &= uX; + uResult ^= uY & uZ; + return uResult; +#else + /* The original. */ + uint64_t uResult = uX & uY; + uResult ^= uX & uZ; + uResult ^= uY & uZ; + return uResult; +#endif +} + + +/** Function 4.10. */ +DECL_FORCE_INLINE(uint64_t) rtSha512CapitalSigma0(uint64_t uX) +{ + uint64_t uResult = uX = ASMRotateRightU64(uX, 28); + uX = ASMRotateRightU64(uX, 34 - 28); + uResult ^= uX; + uX = ASMRotateRightU64(uX, 39 - 34); + uResult ^= uX; + return uResult; +} + + +/** Function 4.11. */ +DECL_FORCE_INLINE(uint64_t) rtSha512CapitalSigma1(uint64_t uX) +{ + uint64_t uResult = uX = ASMRotateRightU64(uX, 14); + uX = ASMRotateRightU64(uX, 18 - 14); + uResult ^= uX; + uX = ASMRotateRightU64(uX, 41 - 18); + uResult ^= uX; + return uResult; +} + + +/** Function 4.12. */ +DECL_FORCE_INLINE(uint64_t) rtSha512SmallSigma0(uint64_t uX) +{ + uint64_t uResult = uX >> 7; + uX = ASMRotateRightU64(uX, 1); + uResult ^= uX; + uX = ASMRotateRightU64(uX, 8 - 1); + uResult ^= uX; + return uResult; +} + + +/** Function 4.13. */ +DECL_FORCE_INLINE(uint64_t) rtSha512SmallSigma1(uint64_t uX) +{ + uint64_t uResult = uX >> 6; + uX = ASMRotateRightU64(uX, 19); + uResult ^= uX; + uX = ASMRotateRightU64(uX, 61 - 19); + uResult ^= uX; + return uResult; +} + + +/** + * Initializes the auW array from the specfied input block. + * + * @param pCtx The SHA-512 context. + * @param pbBlock The block. Must be 64-bit aligned. + */ +DECLINLINE(void) rtSha512BlockInit(PRTSHA512CONTEXT pCtx, uint8_t const *pbBlock) +{ +#ifdef RTSHA512_UNROLLED + uint64_t const *puSrc = (uint64_t const *)pbBlock; + uint64_t *puW = &pCtx->AltPrivate.auW[0]; + Assert(!((uintptr_t)puSrc & 7)); + Assert(!((uintptr_t)puW & 7)); + + /* Copy and byte-swap the block. Initializing the rest of the Ws are done + in the processing loop. */ +# ifdef RT_LITTLE_ENDIAN + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); + *puW++ = ASMByteSwapU64(*puSrc++); +# else + memcpy(puW, puSrc, RTSHA512_BLOCK_SIZE); +# endif + +#else /* !RTSHA512_UNROLLED */ + + uint64_t const *pu32Block = (uint64_t const *)pbBlock; + Assert(!((uintptr_t)pu32Block & 3)); + + unsigned iWord; + for (iWord = 0; iWord < 16; iWord++) + pCtx->AltPrivate.auW[iWord] = RT_BE2H_U64(pu32Block[iWord]); + + for (; iWord < RT_ELEMENTS(pCtx->AltPrivate.auW); iWord++) + { + uint64_t u64 = rtSha512SmallSigma1(pCtx->AltPrivate.auW[iWord - 2]); + u64 += rtSha512SmallSigma0(pCtx->AltPrivate.auW[iWord - 15]); + u64 += pCtx->AltPrivate.auW[iWord - 7]; + u64 += pCtx->AltPrivate.auW[iWord - 16]; + pCtx->AltPrivate.auW[iWord] = u64; + } +#endif /* !RTSHA512_UNROLLED */ +} + + +/** + * Initializes the auW array from data buffered in the first part of the array. + * + * @param pCtx The SHA-512 context. + */ +DECLINLINE(void) rtSha512BlockInitBuffered(PRTSHA512CONTEXT pCtx) +{ +#ifdef RTSHA512_UNROLLED + uint64_t *puW = &pCtx->AltPrivate.auW[0]; + Assert(!((uintptr_t)puW & 7)); + + /* Do the byte swap if necessary. Initializing the rest of the Ws are done + in the processing loop. */ +# ifdef RT_LITTLE_ENDIAN + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; + *puW = ASMByteSwapU64(*puW); puW++; +# endif + +#else /* !RTSHA512_UNROLLED */ + + unsigned iWord; + for (iWord = 0; iWord < 16; iWord++) + pCtx->AltPrivate.auW[iWord] = RT_BE2H_U64(pCtx->AltPrivate.auW[iWord]); + + for (; iWord < RT_ELEMENTS(pCtx->AltPrivate.auW); iWord++) + { + uint64_t u64 = rtSha512SmallSigma1(pCtx->AltPrivate.auW[iWord - 2]); + u64 += rtSha512SmallSigma0(pCtx->AltPrivate.auW[iWord - 15]); + u64 += pCtx->AltPrivate.auW[iWord - 7]; + u64 += pCtx->AltPrivate.auW[iWord - 16]; + pCtx->AltPrivate.auW[iWord] = u64; + } +#endif /* !RTSHA512_UNROLLED */ +} + + +/** + * Process the current block. + * + * Requires one of the rtSha512BlockInit functions to be called first. + * + * @param pCtx The SHA-512 context. + */ +static void rtSha512BlockProcess(PRTSHA512CONTEXT pCtx) +{ + uint64_t uA = pCtx->AltPrivate.auH[0]; + uint64_t uB = pCtx->AltPrivate.auH[1]; + uint64_t uC = pCtx->AltPrivate.auH[2]; + uint64_t uD = pCtx->AltPrivate.auH[3]; + uint64_t uE = pCtx->AltPrivate.auH[4]; + uint64_t uF = pCtx->AltPrivate.auH[5]; + uint64_t uG = pCtx->AltPrivate.auH[6]; + uint64_t uH = pCtx->AltPrivate.auH[7]; + +#ifdef RTSHA512_UNROLLED + uint64_t *puW = &pCtx->AltPrivate.auW[0]; +# define RTSHA512_BODY(a_iWord, a_uK, a_uA, a_uB, a_uC, a_uD, a_uE, a_uF, a_uG, a_uH) \ + do { \ + if ((a_iWord) < 16) \ + a_uH += *puW++; \ + else \ + { \ + uint64_t u64 = puW[-16]; \ + u64 += rtSha512SmallSigma0(puW[-15]); \ + u64 += puW[-7]; \ + u64 += rtSha512SmallSigma1(puW[-2]); \ + if (a_iWord < 80-2) *puW++ = u64; else puW++; \ + a_uH += u64; \ + } \ + \ + a_uH += rtSha512CapitalSigma1(a_uE); \ + a_uH += a_uK; \ + a_uH += rtSha512Ch(a_uE, a_uF, a_uG); \ + a_uD += a_uH; \ + \ + a_uH += rtSha512CapitalSigma0(a_uA); \ + a_uH += rtSha512Maj(a_uA, a_uB, a_uC); \ + } while (0) +# define RTSHA512_EIGHT(a_uK0, a_uK1, a_uK2, a_uK3, a_uK4, a_uK5, a_uK6, a_uK7, a_iFirst) \ + do { \ + RTSHA512_BODY(a_iFirst + 0, a_uK0, uA, uB, uC, uD, uE, uF, uG, uH); \ + RTSHA512_BODY(a_iFirst + 1, a_uK1, uH, uA, uB, uC, uD, uE, uF, uG); \ + RTSHA512_BODY(a_iFirst + 2, a_uK2, uG, uH, uA, uB, uC, uD, uE, uF); \ + RTSHA512_BODY(a_iFirst + 3, a_uK3, uF, uG, uH, uA, uB, uC, uD, uE); \ + RTSHA512_BODY(a_iFirst + 4, a_uK4, uE, uF, uG, uH, uA, uB, uC, uD); \ + RTSHA512_BODY(a_iFirst + 5, a_uK5, uD, uE, uF, uG, uH, uA, uB, uC); \ + RTSHA512_BODY(a_iFirst + 6, a_uK6, uC, uD, uE, uF, uG, uH, uA, uB); \ + RTSHA512_BODY(a_iFirst + 7, a_uK7, uB, uC, uD, uE, uF, uG, uH, uA); \ + } while (0) + RTSHA512_EIGHT(UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc), + UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118), + 0); + RTSHA512_EIGHT(UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2), + UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694), + 8); + RTSHA512_EIGHT(UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65), + UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5), + 16); + RTSHA512_EIGHT(UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4), + UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70), + 24); + RTSHA512_EIGHT(UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df), + UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b), + 32); + RTSHA512_EIGHT(UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001), UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30), + UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8), + 40); + RTSHA512_EIGHT(UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8), + UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3), + 48); + RTSHA512_EIGHT(UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec), + UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b), + 56); + RTSHA512_EIGHT(UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178), + UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b), + 64); + RTSHA512_EIGHT(UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c), + UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817), + 72); +#else + for (unsigned iWord = 0; iWord < RT_ELEMENTS(pCtx->AltPrivate.auW); iWord++) + { + uint64_t uT1 = uH; + uT1 += rtSha512CapitalSigma1(uE); + uT1 += rtSha512Ch(uE, uF, uG); + uT1 += g_auKs[iWord]; + uT1 += pCtx->AltPrivate.auW[iWord]; + + uint64_t uT2 = rtSha512CapitalSigma0(uA); + uT2 += rtSha512Maj(uA, uB, uC); + + uH = uG; + uG = uF; + uF = uE; + uE = uD + uT1; + uD = uC; + uC = uB; + uB = uA; + uA = uT1 + uT2; + } +#endif + + pCtx->AltPrivate.auH[0] += uA; + pCtx->AltPrivate.auH[1] += uB; + pCtx->AltPrivate.auH[2] += uC; + pCtx->AltPrivate.auH[3] += uD; + pCtx->AltPrivate.auH[4] += uE; + pCtx->AltPrivate.auH[5] += uF; + pCtx->AltPrivate.auH[6] += uG; + pCtx->AltPrivate.auH[7] += uH; +} + + +RTDECL(void) RTSha512Update(PRTSHA512CONTEXT pCtx, const void *pvBuf, size_t cbBuf) +{ + Assert(pCtx->AltPrivate.cbMessage.s.Hi < UINT64_MAX / 8); + uint8_t const *pbBuf = (uint8_t const *)pvBuf; + + /* + * Deal with buffered bytes first. + */ + size_t cbBuffered = (size_t)pCtx->AltPrivate.cbMessage.s.Lo & (RTSHA512_BLOCK_SIZE - 1U); + if (cbBuffered) + { + size_t cbMissing = RTSHA512_BLOCK_SIZE - cbBuffered; + if (cbBuf >= cbMissing) + { + memcpy((uint8_t *)&pCtx->AltPrivate.auW[0] + cbBuffered, pbBuf, cbMissing); + pCtx->AltPrivate.cbMessage.s.Lo += cbMissing; + if (!pCtx->AltPrivate.cbMessage.s.Lo) + pCtx->AltPrivate.cbMessage.s.Hi++; + pbBuf += cbMissing; + cbBuf -= cbMissing; + + rtSha512BlockInitBuffered(pCtx); + rtSha512BlockProcess(pCtx); + } + else + { + memcpy((uint8_t *)&pCtx->AltPrivate.auW[0] + cbBuffered, pbBuf, cbBuf); + pCtx->AltPrivate.cbMessage.s.Lo += cbBuf; + return; + } + } + + if (!((uintptr_t)pbBuf & 7)) + { + /* + * Process full blocks directly from the input buffer. + */ + while (cbBuf >= RTSHA512_BLOCK_SIZE) + { + rtSha512BlockInit(pCtx, pbBuf); + rtSha512BlockProcess(pCtx); + + pCtx->AltPrivate.cbMessage.s.Lo += RTSHA512_BLOCK_SIZE; + if (!pCtx->AltPrivate.cbMessage.s.Lo) + pCtx->AltPrivate.cbMessage.s.Hi++; + pbBuf += RTSHA512_BLOCK_SIZE; + cbBuf -= RTSHA512_BLOCK_SIZE; + } + } + else + { + /* + * Unaligned input, so buffer it. + */ + while (cbBuf >= RTSHA512_BLOCK_SIZE) + { + memcpy((uint8_t *)&pCtx->AltPrivate.auW[0], pbBuf, RTSHA512_BLOCK_SIZE); + rtSha512BlockInitBuffered(pCtx); + rtSha512BlockProcess(pCtx); + + pCtx->AltPrivate.cbMessage.s.Lo += RTSHA512_BLOCK_SIZE; + if (!pCtx->AltPrivate.cbMessage.s.Lo) + pCtx->AltPrivate.cbMessage.s.Hi++; + pbBuf += RTSHA512_BLOCK_SIZE; + cbBuf -= RTSHA512_BLOCK_SIZE; + } + } + + /* + * Stash any remaining bytes into the context buffer. + */ + if (cbBuf > 0) + { + memcpy((uint8_t *)&pCtx->AltPrivate.auW[0], pbBuf, cbBuf); + pCtx->AltPrivate.cbMessage.s.Lo += cbBuf; + if (!pCtx->AltPrivate.cbMessage.s.Lo) + pCtx->AltPrivate.cbMessage.s.Hi++; + } +} +RT_EXPORT_SYMBOL(RTSha512Update); + + +/** + * Internal worker for RTSha512Final and RTSha384Final that finalizes the + * computation but does not copy out the hash value. + * + * @param pCtx The SHA-512 context. + */ +static void rtSha512FinalInternal(PRTSHA512CONTEXT pCtx) +{ + Assert(pCtx->AltPrivate.cbMessage.s.Hi < UINT64_MAX / 8); + + /* + * Complete the message by adding a single bit (0x80), padding till + * the next 448-bit boundrary, the add the message length. + */ + RTUINT128U cMessageBits = pCtx->AltPrivate.cbMessage; + cMessageBits.s.Hi <<= 3; + cMessageBits.s.Hi |= cMessageBits.s.Lo >> 61; + cMessageBits.s.Lo <<= 3; + + unsigned cbMissing = RTSHA512_BLOCK_SIZE - ((unsigned)pCtx->AltPrivate.cbMessage.s.Lo & (RTSHA512_BLOCK_SIZE - 1U)); + static uint8_t const s_abSingleBitAndSomePadding[20] = + { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,}; + if (cbMissing < 1U + 16U) + /* Less than 64+16 bits left in the current block, force a new block. */ + RTSha512Update(pCtx, &s_abSingleBitAndSomePadding, sizeof(s_abSingleBitAndSomePadding)); + else + RTSha512Update(pCtx, &s_abSingleBitAndSomePadding, 1); + + unsigned cbBuffered = (unsigned)pCtx->AltPrivate.cbMessage.s.Lo & (RTSHA512_BLOCK_SIZE - 1U); + cbMissing = RTSHA512_BLOCK_SIZE - cbBuffered; + Assert(cbMissing >= 16); + memset((uint8_t *)&pCtx->AltPrivate.auW[0] + cbBuffered, 0, cbMissing - 16); + + pCtx->AltPrivate.auW[14] = RT_H2BE_U64(cMessageBits.s.Hi); + pCtx->AltPrivate.auW[15] = RT_H2BE_U64(cMessageBits.s.Lo); + + /* + * Process the last buffered block constructed/completed above. + */ + rtSha512BlockInitBuffered(pCtx); + rtSha512BlockProcess(pCtx); + + /* + * Convert the byte order of the hash words and we're done. + */ + pCtx->AltPrivate.auH[0] = RT_H2BE_U64(pCtx->AltPrivate.auH[0]); + pCtx->AltPrivate.auH[1] = RT_H2BE_U64(pCtx->AltPrivate.auH[1]); + pCtx->AltPrivate.auH[2] = RT_H2BE_U64(pCtx->AltPrivate.auH[2]); + pCtx->AltPrivate.auH[3] = RT_H2BE_U64(pCtx->AltPrivate.auH[3]); + pCtx->AltPrivate.auH[4] = RT_H2BE_U64(pCtx->AltPrivate.auH[4]); + pCtx->AltPrivate.auH[5] = RT_H2BE_U64(pCtx->AltPrivate.auH[5]); + pCtx->AltPrivate.auH[6] = RT_H2BE_U64(pCtx->AltPrivate.auH[6]); + pCtx->AltPrivate.auH[7] = RT_H2BE_U64(pCtx->AltPrivate.auH[7]); + + RT_ZERO(pCtx->AltPrivate.auW); + pCtx->AltPrivate.cbMessage.s.Lo = UINT64_MAX; + pCtx->AltPrivate.cbMessage.s.Hi = UINT64_MAX; +} +RT_EXPORT_SYMBOL(RTSha512Final); + + +RTDECL(void) RTSha512Final(PRTSHA512CONTEXT pCtx, uint8_t pabDigest[RTSHA512_HASH_SIZE]) +{ + rtSha512FinalInternal(pCtx); + memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA512_HASH_SIZE); + RT_ZERO(pCtx->AltPrivate.auH); +} +RT_EXPORT_SYMBOL(RTSha512Final); + + +RTDECL(void) RTSha512(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA512_HASH_SIZE]) +{ + RTSHA512CONTEXT Ctx; + RTSha512Init(&Ctx); + RTSha512Update(&Ctx, pvBuf, cbBuf); + RTSha512Final(&Ctx, pabDigest); +} +RT_EXPORT_SYMBOL(RTSha512); + + +RTDECL(bool) RTSha512Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA512_HASH_SIZE]) +{ + RTSHA512CONTEXT Ctx; + RTSha512Init(&Ctx); + RTSha512Update(&Ctx, pvBuf, cbBuf); + rtSha512FinalInternal(&Ctx); + + bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA512_HASH_SIZE) == 0; + + RT_ZERO(Ctx.AltPrivate.auH); + return fRet; +} +RT_EXPORT_SYMBOL(RTSha512Check); + + + +/* + * SHA-384 is just SHA-512 with different initial values an a truncated result. + */ + +RTDECL(void) RTSha384Init(PRTSHA384CONTEXT pCtx) +{ + pCtx->AltPrivate.cbMessage.s.Lo = 0; + pCtx->AltPrivate.cbMessage.s.Hi = 0; + pCtx->AltPrivate.auH[0] = UINT64_C(0xcbbb9d5dc1059ed8); + pCtx->AltPrivate.auH[1] = UINT64_C(0x629a292a367cd507); + pCtx->AltPrivate.auH[2] = UINT64_C(0x9159015a3070dd17); + pCtx->AltPrivate.auH[3] = UINT64_C(0x152fecd8f70e5939); + pCtx->AltPrivate.auH[4] = UINT64_C(0x67332667ffc00b31); + pCtx->AltPrivate.auH[5] = UINT64_C(0x8eb44a8768581511); + pCtx->AltPrivate.auH[6] = UINT64_C(0xdb0c2e0d64f98fa7); + pCtx->AltPrivate.auH[7] = UINT64_C(0x47b5481dbefa4fa4); +} +RT_EXPORT_SYMBOL(RTSha384Init); + + +RTDECL(void) RTSha384Update(PRTSHA384CONTEXT pCtx, const void *pvBuf, size_t cbBuf) +{ + RTSha512Update(pCtx, pvBuf, cbBuf); +} +RT_EXPORT_SYMBOL(RTSha384Update); + + +RTDECL(void) RTSha384Final(PRTSHA384CONTEXT pCtx, uint8_t pabDigest[RTSHA384_HASH_SIZE]) +{ + rtSha512FinalInternal(pCtx); + memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA384_HASH_SIZE); + RT_ZERO(pCtx->AltPrivate.auH); +} +RT_EXPORT_SYMBOL(RTSha384Final); + + +RTDECL(void) RTSha384(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA384_HASH_SIZE]) +{ + RTSHA384CONTEXT Ctx; + RTSha384Init(&Ctx); + RTSha384Update(&Ctx, pvBuf, cbBuf); + RTSha384Final(&Ctx, pabDigest); +} +RT_EXPORT_SYMBOL(RTSha384); + + +RTDECL(bool) RTSha384Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA384_HASH_SIZE]) +{ + RTSHA384CONTEXT Ctx; + RTSha384Init(&Ctx); + RTSha384Update(&Ctx, pvBuf, cbBuf); + rtSha512FinalInternal(&Ctx); + + bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA384_HASH_SIZE) == 0; + + RT_ZERO(Ctx.AltPrivate.auH); + return fRet; +} +RT_EXPORT_SYMBOL(RTSha384Check); + + +/* + * SHA-512/224 is just SHA-512 with different initial values an a truncated result. + */ + +RTDECL(void) RTSha512t224Init(PRTSHA512T224CONTEXT pCtx) +{ + pCtx->AltPrivate.cbMessage.s.Lo = 0; + pCtx->AltPrivate.cbMessage.s.Hi = 0; + pCtx->AltPrivate.auH[0] = UINT64_C(0x8c3d37c819544da2); + pCtx->AltPrivate.auH[1] = UINT64_C(0x73e1996689dcd4d6); + pCtx->AltPrivate.auH[2] = UINT64_C(0x1dfab7ae32ff9c82); + pCtx->AltPrivate.auH[3] = UINT64_C(0x679dd514582f9fcf); + pCtx->AltPrivate.auH[4] = UINT64_C(0x0f6d2b697bd44da8); + pCtx->AltPrivate.auH[5] = UINT64_C(0x77e36f7304c48942); + pCtx->AltPrivate.auH[6] = UINT64_C(0x3f9d85a86a1d36c8); + pCtx->AltPrivate.auH[7] = UINT64_C(0x1112e6ad91d692a1); +} +RT_EXPORT_SYMBOL(RTSha512t224Init); + + +RTDECL(void) RTSha512t224Update(PRTSHA512T224CONTEXT pCtx, const void *pvBuf, size_t cbBuf) +{ + RTSha512Update(pCtx, pvBuf, cbBuf); +} +RT_EXPORT_SYMBOL(RTSha512t224Update); + + +RTDECL(void) RTSha512t224Final(PRTSHA512T224CONTEXT pCtx, uint8_t pabDigest[RTSHA512T224_HASH_SIZE]) +{ + rtSha512FinalInternal(pCtx); + memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA512T224_HASH_SIZE); + RT_ZERO(pCtx->AltPrivate.auH); +} +RT_EXPORT_SYMBOL(RTSha512t224Final); + + +RTDECL(void) RTSha512t224(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA512T224_HASH_SIZE]) +{ + RTSHA512T224CONTEXT Ctx; + RTSha512t224Init(&Ctx); + RTSha512t224Update(&Ctx, pvBuf, cbBuf); + RTSha512t224Final(&Ctx, pabDigest); +} +RT_EXPORT_SYMBOL(RTSha512t224); + + +RTDECL(bool) RTSha512t224Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA512T224_HASH_SIZE]) +{ + RTSHA512T224CONTEXT Ctx; + RTSha512t224Init(&Ctx); + RTSha512t224Update(&Ctx, pvBuf, cbBuf); + rtSha512FinalInternal(&Ctx); + + bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA512T224_HASH_SIZE) == 0; + + RT_ZERO(Ctx.AltPrivate.auH); + return fRet; +} +RT_EXPORT_SYMBOL(RTSha512t224Check); + + +/* + * SHA-512/256 is just SHA-512 with different initial values an a truncated result. + */ + +RTDECL(void) RTSha512t256Init(PRTSHA512T256CONTEXT pCtx) +{ + pCtx->AltPrivate.cbMessage.s.Lo = 0; + pCtx->AltPrivate.cbMessage.s.Hi = 0; + pCtx->AltPrivate.auH[0] = UINT64_C(0x22312194fc2bf72c); + pCtx->AltPrivate.auH[1] = UINT64_C(0x9f555fa3c84c64c2); + pCtx->AltPrivate.auH[2] = UINT64_C(0x2393b86b6f53b151); + pCtx->AltPrivate.auH[3] = UINT64_C(0x963877195940eabd); + pCtx->AltPrivate.auH[4] = UINT64_C(0x96283ee2a88effe3); + pCtx->AltPrivate.auH[5] = UINT64_C(0xbe5e1e2553863992); + pCtx->AltPrivate.auH[6] = UINT64_C(0x2b0199fc2c85b8aa); + pCtx->AltPrivate.auH[7] = UINT64_C(0x0eb72ddc81c52ca2); +} +RT_EXPORT_SYMBOL(RTSha512t256Init); + + +RTDECL(void) RTSha512t256Update(PRTSHA512T256CONTEXT pCtx, const void *pvBuf, size_t cbBuf) +{ + RTSha512Update(pCtx, pvBuf, cbBuf); +} +RT_EXPORT_SYMBOL(RTSha512t256Update); + + +RTDECL(void) RTSha512t256Final(PRTSHA512T256CONTEXT pCtx, uint8_t pabDigest[RTSHA512T256_HASH_SIZE]) +{ + rtSha512FinalInternal(pCtx); + memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA512T256_HASH_SIZE); + RT_ZERO(pCtx->AltPrivate.auH); +} +RT_EXPORT_SYMBOL(RTSha512t256Final); + + +RTDECL(void) RTSha512t256(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA512T256_HASH_SIZE]) +{ + RTSHA512T256CONTEXT Ctx; + RTSha512t256Init(&Ctx); + RTSha512t256Update(&Ctx, pvBuf, cbBuf); + RTSha512t256Final(&Ctx, pabDigest); +} +RT_EXPORT_SYMBOL(RTSha512t256); + + +RTDECL(bool) RTSha512t256Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA512T256_HASH_SIZE]) +{ + RTSHA512T256CONTEXT Ctx; + RTSha512t256Init(&Ctx); + RTSha512t256Update(&Ctx, pvBuf, cbBuf); + rtSha512FinalInternal(&Ctx); + + bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA512T256_HASH_SIZE) == 0; + + RT_ZERO(Ctx.AltPrivate.auH); + return fRet; +} +RT_EXPORT_SYMBOL(RTSha512t256Check); + |