diff options
Diffstat (limited to 'src/crypto/isa-l/isa-l_crypto/sha512_mb/sha512_ctx_avx512.c')
| -rw-r--r-- | src/crypto/isa-l/isa-l_crypto/sha512_mb/sha512_ctx_avx512.c | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/src/crypto/isa-l/isa-l_crypto/sha512_mb/sha512_ctx_avx512.c b/src/crypto/isa-l/isa-l_crypto/sha512_mb/sha512_ctx_avx512.c new file mode 100644 index 000000000..f99116eb1 --- /dev/null +++ b/src/crypto/isa-l/isa-l_crypto/sha512_mb/sha512_ctx_avx512.c @@ -0,0 +1,259 @@ +/********************************************************************** + Copyright(c) 2011-2016 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. +**********************************************************************/ + +#include "sha512_mb.h" +#include "memcpy_inline.h" + +#ifdef _MSC_VER +# include <intrin.h> +# define inline __inline +#endif + +#ifdef HAVE_AS_KNOWS_AVX512 + +static inline void hash_init_digest(SHA512_WORD_T * digest); +static inline uint32_t hash_pad(uint8_t padblock[SHA512_BLOCK_SIZE * 2], uint32_t total_len); +static SHA512_HASH_CTX *sha512_ctx_mgr_resubmit(SHA512_HASH_CTX_MGR * mgr, + SHA512_HASH_CTX * ctx); + +void sha512_ctx_mgr_init_avx512(SHA512_HASH_CTX_MGR * mgr) +{ + sha512_mb_mgr_init_avx512(&mgr->mgr); +} + +SHA512_HASH_CTX *sha512_ctx_mgr_submit_avx512(SHA512_HASH_CTX_MGR * mgr, SHA512_HASH_CTX * ctx, + const void *buffer, uint32_t len, + HASH_CTX_FLAG flags) +{ + if (flags & (~HASH_ENTIRE)) { + // User should not pass anything other than FIRST, UPDATE, or LAST + ctx->error = HASH_CTX_ERROR_INVALID_FLAGS; + return ctx; + } + + if (ctx->status & HASH_CTX_STS_PROCESSING) { + // Cannot submit to a currently processing job. + ctx->error = HASH_CTX_ERROR_ALREADY_PROCESSING; + return ctx; + } + + if ((ctx->status & HASH_CTX_STS_COMPLETE) && !(flags & HASH_FIRST)) { + // Cannot update a finished job. + ctx->error = HASH_CTX_ERROR_ALREADY_COMPLETED; + return ctx; + } + + if (flags & HASH_FIRST) { + // Init digest + hash_init_digest(ctx->job.result_digest); + + // Reset byte counter + ctx->total_length = 0; + + // Clear extra blocks + ctx->partial_block_buffer_length = 0; + } + // If we made it here, there were no errors during this call to submit + ctx->error = HASH_CTX_ERROR_NONE; + + // Store buffer ptr info from user + ctx->incoming_buffer = buffer; + ctx->incoming_buffer_length = len; + + // Store the user's request flags and mark this ctx as currently being processed. + ctx->status = (flags & HASH_LAST) ? + (HASH_CTX_STS) (HASH_CTX_STS_PROCESSING | HASH_CTX_STS_LAST) : + HASH_CTX_STS_PROCESSING; + + // Advance byte counter + ctx->total_length += len; + + // If there is anything currently buffered in the extra blocks, append to it until it contains a whole block. + // Or if the user's buffer contains less than a whole block, append as much as possible to the extra block. + if ((ctx->partial_block_buffer_length) | (len < SHA512_BLOCK_SIZE)) { + // Compute how many bytes to copy from user buffer into extra block + uint32_t copy_len = SHA512_BLOCK_SIZE - ctx->partial_block_buffer_length; + if (len < copy_len) + copy_len = len; + + if (copy_len) { + // Copy and update relevant pointers and counters + memcpy_varlen(&ctx->partial_block_buffer + [ctx->partial_block_buffer_length], buffer, copy_len); + + ctx->partial_block_buffer_length += copy_len; + ctx->incoming_buffer = (const void *)((const char *)buffer + copy_len); + ctx->incoming_buffer_length = len - copy_len; + } + // The extra block should never contain more than 1 block here + assert(ctx->partial_block_buffer_length <= SHA512_BLOCK_SIZE); + + // If the extra block buffer contains exactly 1 block, it can be hashed. + if (ctx->partial_block_buffer_length >= SHA512_BLOCK_SIZE) { + ctx->partial_block_buffer_length = 0; + + ctx->job.buffer = ctx->partial_block_buffer; + ctx->job.len = 1; + + ctx = (SHA512_HASH_CTX *) sha512_mb_mgr_submit_avx512(&mgr->mgr, + &ctx->job); + } + } + + return sha512_ctx_mgr_resubmit(mgr, ctx); +} + +SHA512_HASH_CTX *sha512_ctx_mgr_flush_avx512(SHA512_HASH_CTX_MGR * mgr) +{ + SHA512_HASH_CTX *ctx; + + while (1) { + ctx = (SHA512_HASH_CTX *) sha512_mb_mgr_flush_avx512(&mgr->mgr); + + // If flush returned 0, there are no more jobs in flight. + if (!ctx) + return NULL; + + // If flush returned a job, verify that it is safe to return to the user. + // If it is not ready, resubmit the job to finish processing. + ctx = sha512_ctx_mgr_resubmit(mgr, ctx); + + // If sha512_ctx_mgr_resubmit returned a job, it is ready to be returned. + if (ctx) + return ctx; + + // Otherwise, all jobs currently being managed by the SHA512_HASH_CTX_MGR still need processing. Loop. + } +} + +static SHA512_HASH_CTX *sha512_ctx_mgr_resubmit(SHA512_HASH_CTX_MGR * mgr, + SHA512_HASH_CTX * ctx) +{ + while (ctx) { + if (ctx->status & HASH_CTX_STS_COMPLETE) { + ctx->status = HASH_CTX_STS_COMPLETE; // Clear PROCESSING bit + return ctx; + } + // If the extra blocks are empty, begin hashing what remains in the user's buffer. + if (ctx->partial_block_buffer_length == 0 && ctx->incoming_buffer_length) { + const void *buffer = ctx->incoming_buffer; + uint32_t len = ctx->incoming_buffer_length; + + // Only entire blocks can be hashed. Copy remainder to extra blocks buffer. + uint32_t copy_len = len & (SHA512_BLOCK_SIZE - 1); + + if (copy_len) { + len -= copy_len; + memcpy_varlen(ctx->partial_block_buffer, + ((const char *)buffer + len), copy_len); + ctx->partial_block_buffer_length = copy_len; + } + + ctx->incoming_buffer_length = 0; + + // len should be a multiple of the block size now + assert((len % SHA512_BLOCK_SIZE) == 0); + + // Set len to the number of blocks to be hashed in the user's buffer + len >>= SHA512_LOG2_BLOCK_SIZE; + + if (len) { + ctx->job.buffer = (uint8_t *) buffer; + ctx->job.len = len; + ctx = + (SHA512_HASH_CTX *) sha512_mb_mgr_submit_avx512(&mgr->mgr, + &ctx->job); + continue; + } + } + // If the extra blocks are not empty, then we are either on the last block(s) + // or we need more user input before continuing. + if (ctx->status & HASH_CTX_STS_LAST) { + uint8_t *buf = ctx->partial_block_buffer; + uint32_t n_extra_blocks = hash_pad(buf, ctx->total_length); + + ctx->status = + (HASH_CTX_STS) (HASH_CTX_STS_PROCESSING | HASH_CTX_STS_COMPLETE); + ctx->job.buffer = buf; + ctx->job.len = (uint32_t) n_extra_blocks; + ctx = (SHA512_HASH_CTX *) sha512_mb_mgr_submit_avx512(&mgr->mgr, + &ctx->job); + continue; + } + + if (ctx) + ctx->status = HASH_CTX_STS_IDLE; + return ctx; + } + + return NULL; +} + +static inline void hash_init_digest(SHA512_WORD_T * digest) +{ + static const SHA512_WORD_T hash_initial_digest[SHA512_DIGEST_NWORDS] = + { SHA512_INITIAL_DIGEST }; + memcpy_fixedlen(digest, hash_initial_digest, sizeof(hash_initial_digest)); +} + +static inline uint32_t hash_pad(uint8_t padblock[SHA512_BLOCK_SIZE * 2], uint32_t total_len) +{ + uint32_t i = total_len & (SHA512_BLOCK_SIZE - 1); + + memclr_fixedlen(&padblock[i], SHA512_BLOCK_SIZE); + padblock[i] = 0x80; + + // Move i to the end of either 1st or 2nd extra block depending on length + i += ((SHA512_BLOCK_SIZE - 1) & (0 - (total_len + SHA512_PADLENGTHFIELD_SIZE + 1))) + + 1 + SHA512_PADLENGTHFIELD_SIZE; + +#if SHA512_PADLENGTHFIELD_SIZE == 16 + *((uint64_t *) & padblock[i - 16]) = 0; +#endif + + *((uint64_t *) & padblock[i - 8]) = _byteswap_uint64((uint64_t) total_len << 3); + + return i >> SHA512_LOG2_BLOCK_SIZE; // Number of extra blocks to hash +} + +struct slver { + uint16_t snum; + uint8_t ver; + uint8_t core; +}; +struct slver sha512_ctx_mgr_init_avx512_slver_0600016a; +struct slver sha512_ctx_mgr_init_avx512_slver = { 0x016a, 0x00, 0x06 }; + +struct slver sha512_ctx_mgr_submit_avx512_slver_0600016b; +struct slver sha512_ctx_mgr_submit_avx512_slver = { 0x016b, 0x00, 0x06 }; + +struct slver sha512_ctx_mgr_flush_avx512_slver_0600016c; +struct slver sha512_ctx_mgr_flush_avx512_slver = { 0x016c, 0x00, 0x06 }; + +#endif // HAVE_AS_KNOWS_AVX512 |