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Update SEED.cs

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This commit is contained in:
Namhyeon Go 2024-12-05 18:21:21 +09:00
parent eaa33e3b7b
commit 3b022d68a4
1 changed files with 6 additions and 6 deletions
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12
WelsonJS.Toolkit/WelsonJS.Toolkit/Cryptography/SEED.cs
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@ -232,12 +232,12 @@ namespace WelsonJS.Cryptography
(src[srcOffset + 3] & 0xFF) << 24);
}
private static byte GetB(uint A, int position)
private static byte GetB(uint A, int pos)
{
if (position < 0 || position > 4)
if (pos < 0 || pos > 4)
throw new ArgumentException("Invalid position.");
return position > 0 ? (byte)((A >> (8 * position)) & 0x0ff) : (byte)(A & 0x0ff);
return pos > 0 ? (byte)((A >> (8 * pos)) & 0x0ff) : (byte)(A & 0x0ff);
}
// Round function F and adding output of F to L.
@ -249,11 +249,11 @@ namespace WelsonJS.Cryptography
T[0] = LR[R0] ^ K[K_offset + 0];
T[1] = LR[R1] ^ K[K_offset + 1];
T[1] ^= T[0];
T[1] = SS0[GetB(T[1], 0) & 0x0ff] ^ SS1[GetB(T[1], 1) & 0x0ff] ^ SS2[GetB(T[1], 2) & 0x0ff] ^ SS3[GetB(T[1], 3) & 0x0ff];
T[1] = SS0[GetB(T[1], 0)] ^ SS1[GetB(T[1], 1)] ^ SS2[GetB(T[1], 2)] ^ SS3[GetB(T[1], 3)];
T[0] += T[1];
T[0] = SS0[GetB(T[0], 0) & 0x0ff] ^ SS1[GetB(T[0], 1) & 0x0ff] ^ SS2[GetB(T[0], 2) & 0x0ff] ^ SS3[GetB(T[0], 3) & 0x0ff];
T[0] = SS0[GetB(T[0], 0)] ^ SS1[GetB(T[0], 1)] ^ SS2[GetB(T[0], 2)] ^ SS3[GetB(T[0], 3)];
T[1] += T[0];
T[1] = SS0[GetB(T[1], 0) & 0x0ff] ^ SS1[GetB(T[1], 1) & 0x0ff] ^ SS2[GetB(T[1], 2) & 0x0ff] ^ SS3[GetB(T[1], 3) & 0x0ff];
T[1] = SS0[GetB(T[1], 0)] ^ SS1[GetB(T[1], 1)] ^ SS2[GetB(T[1], 2)] ^ SS3[GetB(T[1], 3)];
T[0] += T[1];
LR[L0] ^= T[0]; LR[L1] ^= T[1];
}