diff options
| author | lloyd <[email protected]> | 2006-09-20 08:18:06 +0000 |
|---|---|---|
| committer | lloyd <[email protected]> | 2006-09-20 08:18:06 +0000 |
| commit | 7dc1f8c8ce6b1f959c4f90cb99661b76eec60bbb (patch) | |
| tree | 2de9a96ad2cdf709ffd39fbfe9cb68b5e3b36a51 | |
| parent | 70d37c35ae4d4ef048db90b28cc83bd6e20f42af (diff) | |
Make the implementation of the round function a bit easier to read.
| -rw-r--r-- | src/seed.cpp | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/seed.cpp b/src/seed.cpp index 05dd82d51..3bb748b6c 100644 --- a/src/seed.cpp +++ b/src/seed.cpp @@ -36,12 +36,15 @@ void SEED::enc(const byte in[], byte out[]) const T0 = B2 ^ K[2*j]; T1 = G(T0 ^ B3 ^ K[2*j+1]); T0 = G(T1 + T0); - B1 ^= (T1 = G(T1 + T0)); + T1 = G(T1 + T0); + B1 ^= T1; + B0 ^= T0 + T1; - T0 = (B0 ^= T0 + T1) ^ K[2*j+2]; + T0 = B0 ^ K[2*j+2]; T1 = G(T0 ^ B1 ^ K[2*j+3]); T0 = G(T1 + T0); - B3 ^= (T1 = G(T1 + T0)); + T1 = G(T1 + T0); + B3 ^= T1; B2 ^= T0 + T1; } @@ -74,12 +77,15 @@ void SEED::dec(const byte in[], byte out[]) const T0 = B2 ^ K[30-2*j]; T1 = G(T0 ^ B3 ^ K[31-2*j]); T0 = G(T1 + T0); - B1 ^= (T1 = G(T1 + T0)); + T1 = G(T1 + T0); + B1 ^= T1; + B0 ^= T0 + T1; - T0 = (B0 ^= T0 + T1) ^ K[28-2*j]; + T0 = B0 ^ K[28-2*j]; T1 = G(T0 ^ B1 ^ K[29-2*j]); T0 = G(T1 + T0); - B3 ^= (T1 = G(T1 + T0)); + T1 = G(T1 + T0); + B3 ^= T1; B2 ^= T0 + T1; } |