diff options
Diffstat (limited to 'src/crypto/fipsmodule/sha/sha512.c')
| -rw-r--r-- | src/crypto/fipsmodule/sha/sha512.c | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/src/crypto/fipsmodule/sha/sha512.c b/src/crypto/fipsmodule/sha/sha512.c index 6e1f79ba..3902f50e 100644 --- a/src/crypto/fipsmodule/sha/sha512.c +++ b/src/crypto/fipsmodule/sha/sha512.c @@ -63,17 +63,17 @@ #include "../../internal.h" -/* IMPLEMENTATION NOTES. - * - * The 32-bit hash algorithms share a common byte-order neutral collector and - * padding function implementations that operate on unaligned data, - * ../md32_common.h. This SHA-512 implementation does not. Reasons - * [in reverse order] are: - * - * - It's the only 64-bit hash algorithm for the moment of this writing, - * there is no need for common collector/padding implementation [yet]; - * - By supporting only a transform function that operates on *aligned* data - * the collector/padding function is simpler and easier to optimize. */ +// IMPLEMENTATION NOTES. +// +// The 32-bit hash algorithms share a common byte-order neutral collector and +// padding function implementations that operate on unaligned data, +// ../md32_common.h. This SHA-512 implementation does not. Reasons +// [in reverse order] are: +// +// - It's the only 64-bit hash algorithm for the moment of this writing, +// there is no need for common collector/padding implementation [yet]; +// - By supporting only a transform function that operates on *aligned* data +// the collector/padding function is simpler and easier to optimize. #if !defined(OPENSSL_NO_ASM) && \ (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \ @@ -227,7 +227,7 @@ int SHA512_Final(uint8_t *md, SHA512_CTX *sha) { uint8_t *p = (uint8_t *)sha->u.p; size_t n = sha->num; - p[n] = 0x80; /* There always is a room for one */ + p[n] = 0x80; // There always is a room for one n++; if (n > (sizeof(sha->u) - 16)) { OPENSSL_memset(p + n, 0, sizeof(sha->u) - n); @@ -256,13 +256,13 @@ int SHA512_Final(uint8_t *md, SHA512_CTX *sha) { sha512_block_data_order(sha->h, (uint64_t *)p, 1); if (md == NULL) { - /* TODO(davidben): This NULL check is absent in other low-level hash 'final' - * functions and is one of the few places one can fail. */ + // TODO(davidben): This NULL check is absent in other low-level hash 'final' + // functions and is one of the few places one can fail. return 0; } switch (sha->md_len) { - /* Let compiler decide if it's appropriate to unroll... */ + // Let compiler decide if it's appropriate to unroll... case SHA384_DIGEST_LENGTH: for (n = 0; n < SHA384_DIGEST_LENGTH / 8; n++) { uint64_t t = sha->h[n]; @@ -291,10 +291,10 @@ int SHA512_Final(uint8_t *md, SHA512_CTX *sha) { *(md++) = (uint8_t)(t); } break; - /* ... as well as make sure md_len is not abused. */ + // ... as well as make sure md_len is not abused. default: - /* TODO(davidben): This bad |md_len| case is one of the few places a - * low-level hash 'final' function can fail. This should never happen. */ + // TODO(davidben): This bad |md_len| case is one of the few places a + // low-level hash 'final' function can fail. This should never happen. return 0; } @@ -392,7 +392,7 @@ static const uint64_t K512[80] = { #endif #endif #elif defined(_MSC_VER) -#if defined(_WIN64) /* applies to both IA-64 and AMD64 */ +#if defined(_WIN64) // applies to both IA-64 and AMD64 #pragma intrinsic(_rotr64) #define ROTR(a, n) _rotr64((a), n) #endif @@ -432,10 +432,8 @@ static uint64_t __fastcall __pull64be(const void *x) { #if defined(__i386) || defined(__i386__) || defined(_M_IX86) -/* - * This code should give better results on 32-bit CPU with less than - * ~24 registers, both size and performance wise... - */ +// This code should give better results on 32-bit CPU with less than +// ~24 registers, both size and performance wise... static void sha512_block_data_order(uint64_t *state, const uint64_t *W, size_t num) { uint64_t A, E, T; @@ -593,7 +591,7 @@ static void sha512_block_data_order(uint64_t *state, const uint64_t *W, #endif -#endif /* !SHA512_ASM */ +#endif // !SHA512_ASM #undef ROTR #undef PULL64 |