diff options
Diffstat (limited to 'src/lib/hash/sha2_32/sha2_32.cpp')
| -rw-r--r-- | src/lib/hash/sha2_32/sha2_32.cpp | 55 |
1 files changed, 20 insertions, 35 deletions
diff --git a/src/lib/hash/sha2_32/sha2_32.cpp b/src/lib/hash/sha2_32/sha2_32.cpp index c4d76b0f6..77e930699 100644 --- a/src/lib/hash/sha2_32/sha2_32.cpp +++ b/src/lib/hash/sha2_32/sha2_32.cpp @@ -11,46 +11,28 @@ namespace Botan { -namespace { - -namespace SHA2_32 { - -/* -* SHA-256 Rho Function -*/ -inline uint32_t rho(uint32_t X, uint32_t rot1, uint32_t rot2, uint32_t rot3) - { - return (rotate_right(X, rot1) ^ rotate_right(X, rot2) ^ - rotate_right(X, rot3)); - } - -/* -* SHA-256 Sigma Function -*/ -inline uint32_t sigma(uint32_t X, uint32_t rot1, uint32_t rot2, uint32_t shift) - { - return (rotate_right(X, rot1) ^ rotate_right(X, rot2) ^ (X >> shift)); - } - /* * SHA-256 F1 Function * * Use a macro as many compilers won't inline a function this big, * even though it is much faster if inlined. */ -#define SHA2_32_F(A, B, C, D, E, F, G, H, M1, M2, M3, M4, magic) \ - do { \ - H += magic + rho(E, 6, 11, 25) + ((E & F) ^ (~E & G)) + M1; \ - D += H; \ - H += rho(A, 2, 13, 22) + ((A & B) | ((A | B) & C)); \ - M1 += sigma(M2, 17, 19, 10) + M3 + sigma(M4, 7, 18, 3); \ +#define SHA2_32_F(A, B, C, D, E, F, G, H, M1, M2, M3, M4, magic) do { \ + uint32_t A_rho = rotate_right(A, 2) ^ rotate_right(A, 13) ^ rotate_right(A, 22); \ + uint32_t E_rho = rotate_right(E, 6) ^ rotate_right(E, 11) ^ rotate_right(E, 25); \ + uint32_t M2_sigma = rotate_right(M2, 17) ^ rotate_right(M2, 19) ^ (M2 >> 10); \ + uint32_t M4_sigma = rotate_right(M4, 7) ^ rotate_right(M4, 18) ^ (M4 >> 3); \ + H += magic + E_rho + ((E & F) ^ (~E & G)) + M1; \ + D += H; \ + H += A_rho + ((A & B) | ((A | B) & C)); \ + M1 += M2_sigma + M3 + M4_sigma; \ } while(0); /* * SHA-224 / SHA-256 compression function */ -void compress(secure_vector<uint32_t>& digest, - const uint8_t input[], size_t blocks) +void SHA_256::compress_digest(secure_vector<uint32_t>& digest, + const uint8_t input[], size_t blocks) { #if defined(BOTAN_HAS_SHA2_32_X86) if(CPUID::has_intel_sha()) @@ -59,6 +41,13 @@ void compress(secure_vector<uint32_t>& digest, } #endif +#if defined(BOTAN_HAS_SHA2_32_ARMV8) + if(CPUID::has_arm_sha2()) + { + return SHA_256::compress_digest_armv8(digest, input, blocks); + } +#endif + uint32_t A = digest[0], B = digest[1], C = digest[2], D = digest[3], E = digest[4], F = digest[5], G = digest[6], H = digest[7]; @@ -160,16 +149,12 @@ void compress(secure_vector<uint32_t>& digest, } } -} - -} - /* * SHA-224 compression function */ void SHA_224::compress_n(const uint8_t input[], size_t blocks) { - SHA2_32::compress(m_digest, input, blocks); + SHA_256::compress_digest(m_digest, input, blocks); } /* @@ -201,7 +186,7 @@ void SHA_224::clear() */ void SHA_256::compress_n(const uint8_t input[], size_t blocks) { - SHA2_32::compress(m_digest, input, blocks); + SHA_256::compress_digest(m_digest, input, blocks); } /* |