diff options
Diffstat (limited to 'src/hash/sha2/sha2_64.cpp')
| -rw-r--r-- | src/hash/sha2/sha2_64.cpp | 58 |
1 files changed, 30 insertions, 28 deletions
diff --git a/src/hash/sha2/sha2_64.cpp b/src/hash/sha2/sha2_64.cpp index cafa06e53..dbbfc5a96 100644 --- a/src/hash/sha2/sha2_64.cpp +++ b/src/hash/sha2/sha2_64.cpp @@ -1,7 +1,9 @@ -/************************************************* -* SHA-{384,512} Source File * -* (C) 1999-2007 Jack Lloyd * -*************************************************/ +/* +* SHA-{384,512} +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ #include <botan/sha2_64.h> #include <botan/loadstor.h> @@ -11,18 +13,18 @@ namespace Botan { namespace { -/************************************************* -* SHA-{384,512} Rho Function * -*************************************************/ +/* +* SHA-{384,512} Rho Function +*/ inline u64bit rho(u64bit X, u32bit rot1, u32bit rot2, u32bit rot3) { return (rotate_right(X, rot1) ^ rotate_right(X, rot2) ^ rotate_right(X, rot3)); } -/************************************************* -* SHA-{384,512} F1 Function * -*************************************************/ +/* +* SHA-{384,512} F1 Function +*/ inline void F1(u64bit A, u64bit B, u64bit C, u64bit& D, u64bit E, u64bit F, u64bit G, u64bit& H, u64bit msg, u64bit magic) @@ -32,9 +34,9 @@ inline void F1(u64bit A, u64bit B, u64bit C, u64bit& D, H += magic + rho(A, 28, 34, 39) + ((A & B) ^ (A & C) ^ (B & C)); } -/************************************************* -* SHA-{384,512} Sigma Function * -*************************************************/ +/* +* SHA-{384,512} Sigma Function +*/ inline u64bit sigma(u64bit X, u32bit rot1, u32bit rot2, u32bit shift) { return (rotate_right(X, rot1) ^ rotate_right(X, rot2) ^ (X >> shift)); @@ -42,9 +44,9 @@ inline u64bit sigma(u64bit X, u32bit rot1, u32bit rot2, u32bit shift) } -/************************************************* -* SHA-{384,512} Compression Function * -*************************************************/ +/* +* SHA-{384,512} Compression Function +*/ void SHA_384_512_BASE::compress_n(const byte input[], u32bit blocks) { u64bit A = digest[0], B = digest[1], C = digest[2], @@ -153,27 +155,27 @@ void SHA_384_512_BASE::compress_n(const byte input[], u32bit blocks) } } -/************************************************* -* Copy out the digest * -*************************************************/ +/* +* Copy out the digest +*/ void SHA_384_512_BASE::copy_out(byte output[]) { for(u32bit j = 0; j != OUTPUT_LENGTH; j += 8) store_be(digest[j/8], output + j); } -/************************************************* -* Clear memory of sensitive data * -*************************************************/ +/* +* Clear memory of sensitive data +*/ void SHA_384_512_BASE::clear() throw() { MDx_HashFunction::clear(); W.clear(); } -/************************************************* -* Clear memory of sensitive data * -*************************************************/ +/* +* Clear memory of sensitive data +*/ void SHA_384::clear() throw() { SHA_384_512_BASE::clear(); @@ -187,9 +189,9 @@ void SHA_384::clear() throw() digest[7] = 0x47B5481DBEFA4FA4; } -/************************************************* -* Clear memory of sensitive data * -*************************************************/ +/* +* Clear memory of sensitive data +*/ void SHA_512::clear() throw() { SHA_384_512_BASE::clear(); |