diff options
Diffstat (limited to 'src/block/gost_28147/gost_28147.cpp')
| -rw-r--r-- | src/block/gost_28147/gost_28147.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/block/gost_28147/gost_28147.cpp b/src/block/gost_28147/gost_28147.cpp index 18fd38d30..bfd092c56 100644 --- a/src/block/gost_28147/gost_28147.cpp +++ b/src/block/gost_28147/gost_28147.cpp @@ -53,6 +53,7 @@ GOST_28147_89_Params::GOST_28147_89_Params(const std::string& n) : name(n) GOST_28147_89::GOST_28147_89(const GOST_28147_89_Params& param) : BlockCipher(8, 32) { + // Convert the parallel 4x4 sboxes into larger word-based sboxes for(size_t i = 0; i != 4; ++i) for(size_t j = 0; j != 256; ++j) { @@ -66,19 +67,19 @@ GOST_28147_89::GOST_28147_89(const GOST_28147_89_Params& param) : * Two rounds of GOST */ #define GOST_2ROUND(N1, N2, R1, R2) \ - { \ + do { \ u32bit T0 = N1 + EK[R1]; \ N2 ^= SBOX[get_byte(3, T0)] | \ SBOX[get_byte(2, T0)+256] | \ SBOX[get_byte(1, T0)+512] | \ SBOX[get_byte(0, T0)+768]; \ \ - T0 = N2 + EK[R2]; \ - N1 ^= SBOX[get_byte(3, T0)] | \ - SBOX[get_byte(2, T0)+256] | \ - SBOX[get_byte(1, T0)+512] | \ - SBOX[get_byte(0, T0)+768]; \ - } + u32bit T1 = N2 + EK[R2]; \ + N1 ^= SBOX[get_byte(3, T1)] | \ + SBOX[get_byte(2, T1)+256] | \ + SBOX[get_byte(1, T1)+512] | \ + SBOX[get_byte(0, T1)+768]; \ + } while(0) /* * GOST Encryption |