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Improve code clarity

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smallmodel 2025-02-22 22:11:29 +01:00
parent 08c718d232
commit ebd86b32bd
No known key found for this signature in database
GPG key ID: 9F2D623CEDF08512
1 changed files with 16 additions and 16 deletions
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32
code/gamespy/gcrypt.c
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@ -51,10 +51,10 @@ static unsigned int crypt_seek(GCryptInfo *info, unsigned int n1, unsigned int n
if (n2 & current) {
part = rotl32(~xorKey, 24);
xorKey = rotl32(info->key[(unsigned char)part] ^ part, 24);
part = rotl32(info->key[(unsigned char)keyIndex] ^ keyIndex, 8);
xorKey ^= info->key[(unsigned char)xorKey];
keyIndex = rotl32(info->key[(unsigned char)part] ^ part, 8);
xorKey = rotl32(info->key[part & 0xff] ^ part, 24);
part = rotl32(info->key[keyIndex & 0xff] ^ keyIndex, 8);
xorKey ^= info->key[xorKey & 0xff];
keyIndex = rotl32(info->key[part & 0xff] ^ part, 8);
i += 1 + i;
} else {
@ -64,10 +64,10 @@ static unsigned int crypt_seek(GCryptInfo *info, unsigned int n1, unsigned int n
info->offset++;
part = rotl32(keyIndex, 24);
keyIndex = rotl32(info->key[(unsigned char)part] ^ part, 24);
part = rotl32(info->key[(unsigned char)xorKey] ^ xorKey, 8);
keyIndex ^= info->key[(unsigned char)keyIndex];
xorKey = rotl32(info->key[(unsigned char)part] ^ part, 8);
keyIndex = rotl32(info->key[part & 0xff] ^ part, 24);
part = rotl32(info->key[xorKey & 0xff] ^ xorKey, 8);
keyIndex ^= info->key[keyIndex & 0xff];
xorKey = rotl32(info->key[part & 0xff] ^ part, 8);
i *= 2;
}
@ -109,10 +109,10 @@ static void crypt_encrypt(GCryptInfo *info, unsigned int *words, int len)
offset++;
part = rotl32(keyIndex, 24);
keyIndex = rotl32(info->key[(unsigned char)part] ^ part, 24);
part = rotl32(info->key[(unsigned char)xorKey] ^ xorKey, 8);
keyIndex ^= info->key[(unsigned char)keyIndex];
xorKey = rotl32(info->key[(unsigned char)part] ^ part, 8);
keyIndex = rotl32(info->key[part & 0xff] ^ part, 24);
part = rotl32(info->key[xorKey & 0xff] ^ xorKey, 8);
keyIndex ^= info->key[keyIndex & 0xff];
xorKey = rotl32(info->key[part & 0xff] ^ part, 8);
i *= 2;
}
@ -124,10 +124,10 @@ static void crypt_encrypt(GCryptInfo *info, unsigned int *words, int len)
}
part = rotl32(~info->msg[offset], 24);
xorKey = rotl32(info->key[(unsigned char)part] ^ part, 24);
part = rotl32(info->key[(unsigned char)info->msg[offset + 16]] ^ info->msg[offset + 16], 8);
xorKey ^= info->key[(unsigned char)xorKey];
keyIndex = rotl32(info->key[(unsigned char)part] ^ part, 8);
xorKey = rotl32(info->key[part & 0xff] ^ part, 24);
part = rotl32(info->key[info->msg[offset + 16] & 0xff] ^ info->msg[offset + 16], 8);
xorKey ^= info->key[xorKey & 0xff];
keyIndex = rotl32(info->key[part & 0xff] ^ part, 8);
i = info->msg[offset + 32] + 1 + info->msg[offset + 32];
}