*/
-#include "silcincludes.h"
+#include "silc.h"
+#include "rijndael_internal.h"
#include "aes.h"
/*
SILC_CIPHER_API_SET_KEY(aes)
{
- rijndael_set_key((RijndaelContext *)context, (unsigned int *)key, keylen);
- return 1;
+ SilcUInt32 k[8];
+
+ SILC_GET_WORD_KEY(key, k, keylen);
+ rijndael_set_key((RijndaelContext *)context, k, keylen);
+
+ return TRUE;
}
/* Sets the string as a new key for the cipher. The string is first
SILC_CIPHER_API_SET_KEY_WITH_STRING(aes)
{
- /* unsigned char key[md5_hash_len];
- SilcMarsContext *ctx = (SilcMarsContext *)context;
-
- make_md5_hash(string, &key);
- memcpy(&ctx->key, mars_set_key(&key, keylen), keylen);
- memset(&key, 'F', sizeoof(key));
- */
-
return 1;
}
SILC_CIPHER_API_ENCRYPT_CBC(aes)
{
- unsigned int *in, *out, *tiv;
- unsigned int tmp[4];
+ SilcUInt32 tiv[4];
int i;
- in = (unsigned int *)src;
- out = (unsigned int *)dst;
- tiv = (unsigned int *)iv;
+ SILC_CBC_GET_IV(tiv, iv);
- tmp[0] = in[0] ^ tiv[0];
- tmp[1] = in[1] ^ tiv[1];
- tmp[2] = in[2] ^ tiv[2];
- tmp[3] = in[3] ^ tiv[3];
- rijndael_encrypt((RijndaelContext *)context, tmp, out);
- in += 4;
- out += 4;
+ SILC_CBC_ENC_PRE(tiv, src);
+ rijndael_encrypt((RijndaelContext *)context, tiv, tiv);
+ SILC_CBC_ENC_POST(tiv, dst, src);
for (i = 16; i < len; i += 16) {
- tmp[0] = in[0] ^ out[0 - 4];
- tmp[1] = in[1] ^ out[1 - 4];
- tmp[2] = in[2] ^ out[2 - 4];
- tmp[3] = in[3] ^ out[3 - 4];
- rijndael_encrypt((RijndaelContext *)context, tmp, out);
- in += 4;
- out += 4;
+ SILC_CBC_ENC_PRE(tiv, src);
+ rijndael_encrypt((RijndaelContext *)context, tiv, tiv);
+ SILC_CBC_ENC_POST(tiv, dst, src);
}
- tiv[0] = out[0 - 4];
- tiv[1] = out[1 - 4];
- tiv[2] = out[2 - 4];
- tiv[3] = out[3 - 4];
+ SILC_CBC_PUT_IV(tiv, iv);
return TRUE;
}
SILC_CIPHER_API_DECRYPT_CBC(aes)
{
- unsigned int *tiv, *in, *out;
- unsigned int tmp[4], tmp2[4];
+ SilcUInt32 tmp[4], tmp2[4], tiv[4];
int i;
- in = (unsigned int *)src;
- out = (unsigned int *)dst;
- tiv = (unsigned int *)iv;
-
- tmp[0] = in[0];
- tmp[1] = in[1];
- tmp[2] = in[2];
- tmp[3] = in[3];
- rijndael_decrypt((RijndaelContext *)context, in, out);
- out[0] ^= tiv[0];
- out[1] ^= tiv[1];
- out[2] ^= tiv[2];
- out[3] ^= tiv[3];
- in += 4;
- out += 4;
+ SILC_CBC_GET_IV(tiv, iv);
+
+ SILC_CBC_DEC_PRE(tmp, src);
+ rijndael_decrypt((RijndaelContext *)context, tmp, tmp2);
+ SILC_CBC_DEC_POST(tmp2, dst, src, tmp, tiv);
for (i = 16; i < len; i += 16) {
- tmp2[0] = tmp[0];
- tmp2[1] = tmp[1];
- tmp2[2] = tmp[2];
- tmp2[3] = tmp[3];
- tmp[0] = in[0];
- tmp[1] = in[1];
- tmp[2] = in[2];
- tmp[3] = in[3];
- rijndael_decrypt((RijndaelContext *)context, in, out);
- out[0] ^= tmp2[0];
- out[1] ^= tmp2[1];
- out[2] ^= tmp2[2];
- out[3] ^= tmp2[3];
- in += 4;
- out += 4;
+ SILC_CBC_DEC_PRE(tmp, src);
+ rijndael_decrypt((RijndaelContext *)context, tmp, tmp2);
+ SILC_CBC_DEC_POST(tmp2, dst, src, tmp, tiv);
}
-
- tiv[0] = tmp[0];
- tiv[1] = tmp[1];
- tiv[2] = tmp[2];
- tiv[3] = tmp[3];
-
+
+ SILC_CBC_PUT_IV(tiv, iv);
+
return TRUE;
}