Fix more error codes.

[openssl.git] / crypto / evp / e_aes.c

diff --git a/crypto/evp/e_aes.c b/crypto/evp/e_aes.c
index 79fc9c3ea8802f2efb244c440e655e2a666c9675..bd6c0a3a62a323a970a6d2d0bbc0ba9b869c595f 100644 (file)
--- a/crypto/evp/e_aes.c
+++ b/crypto/evp/e_aes.c
@@ -48,107 +48,73 @@
  *
  */
 
+#include <openssl/opensslconf.h>
 #ifndef OPENSSL_NO_AES
 #include <openssl/evp.h>
 #include <openssl/err.h>
 #include <string.h>
 #include <assert.h>
+#include <openssl/aes.h>
+#include "evp_locl.h"
 
-static int aes_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                                        const unsigned char *iv, int enc);
-static int aes_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                               const unsigned char *in, unsigned int inl);
-static int aes_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                               const unsigned char *in, unsigned int inl);
 
-#define IMPLEMENT_AES_CIPHER(name, ciph_func, keylen, ivlen, mode) \
-static const EVP_CIPHER name##_cipher_st = \
-       { \
-       NID_##name, \
-       16,keylen,ivlen, \
-       mode, \
-       aes_init, \
-       ciph_func, \
-       NULL, \
-       sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+ \
-               sizeof((((EVP_CIPHER_CTX *)NULL)->c.rijndael)), \
-       EVP_CIPHER_set_asn1_iv, \
-       EVP_CIPHER_get_asn1_iv, \
-       NULL, \
-       NULL \
-       }; \
-const EVP_CIPHER * EVP_##name(void) \
-       { \
-       return &name##_cipher_st; \
-       }
+typedef struct
+       {
+       AES_KEY ks;
+       } EVP_AES_KEY;
+
+#define data(ctx)      EVP_C_DATA(EVP_AES_KEY,ctx)
+
+IMPLEMENT_BLOCK_CIPHER(aes_128, ks, AES, EVP_AES_KEY,
+                      NID_aes_128, 16, 16, 16, 128,
+                      0, aes_init_key, NULL, 
+                      EVP_CIPHER_set_asn1_iv,
+                      EVP_CIPHER_get_asn1_iv,
+                      NULL)
+IMPLEMENT_BLOCK_CIPHER(aes_192, ks, AES, EVP_AES_KEY,
+                      NID_aes_192, 16, 24, 16, 128,
+                      0, aes_init_key, NULL, 
+                      EVP_CIPHER_set_asn1_iv,
+                      EVP_CIPHER_get_asn1_iv,
+                      NULL)
+IMPLEMENT_BLOCK_CIPHER(aes_256, ks, AES, EVP_AES_KEY,
+                      NID_aes_256, 16, 32, 16, 128,
+                      0, aes_init_key, NULL, 
+                      EVP_CIPHER_set_asn1_iv,
+                      EVP_CIPHER_get_asn1_iv,
+                      NULL)
 
-IMPLEMENT_AES_CIPHER(aes_128_ecb, aes_ecb, 16, 0, EVP_CIPH_ECB_MODE)
-IMPLEMENT_AES_CIPHER(aes_192_ecb, aes_ecb, 24, 0, EVP_CIPH_ECB_MODE)
-IMPLEMENT_AES_CIPHER(aes_256_ecb, aes_ecb, 32, 0, EVP_CIPH_ECB_MODE)
+#define IMPLEMENT_AES_CFBR(ksize,cbits)        IMPLEMENT_CFBR(aes,AES,EVP_AES_KEY,ks,ksize,cbits,16)
 
-IMPLEMENT_AES_CIPHER(aes_128_cbc, aes_cbc, 16, 16, EVP_CIPH_CBC_MODE)
-IMPLEMENT_AES_CIPHER(aes_192_cbc, aes_cbc, 24, 24, EVP_CIPH_CBC_MODE)
-IMPLEMENT_AES_CIPHER(aes_256_cbc, aes_cbc, 32, 32, EVP_CIPH_CBC_MODE)
+IMPLEMENT_AES_CFBR(128,1)
+IMPLEMENT_AES_CFBR(192,1)
+IMPLEMENT_AES_CFBR(256,1)
 
-static int aes_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+IMPLEMENT_AES_CFBR(128,8)
+IMPLEMENT_AES_CFBR(192,8)
+IMPLEMENT_AES_CFBR(256,8)
+
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                   const unsigned char *iv, int enc)
        {
-       RIJNDAEL_KEY *k=&ctx->c.rijndael;
-       if (enc) 
-               k->rounds = rijndaelKeySetupEnc(k->rd_key, key, ctx->key_len * 8);
-       else
-               k->rounds = rijndaelKeySetupDec(k->rd_key, key, ctx->key_len * 8);
+       int ret;
 
-       return 1;
-       }
+       if ((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CFB_MODE
+           || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_OFB_MODE
+           || enc) 
+               ret=AES_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
+       else
+               ret=AES_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
 
-static int aes_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                        const unsigned char *in, unsigned int inl)
-       {
-       RIJNDAEL_KEY *k=&ctx->c.rijndael;
-       while(inl > 0)
+       if(ret < 0)
                {
-               if(ctx->encrypt)
-                       rijndaelEncrypt(k->rd_key,k->rounds, in, out);
-               else
-                       rijndaelDecrypt(k->rd_key,k->rounds, in, out);
-               inl-=16;
-               in+=16;
-               out+=16;
+               EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
+               return 0;
                }
-       assert(inl == 0);
 
        return 1;
        }
 
-static int aes_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                        const unsigned char *in, unsigned int inl)
-       {
-       int n;
-       unsigned char tmp[16];
-       RIJNDAEL_KEY *k=&ctx->c.rijndael;
-       while(inl > 0)
-               {
-               if(ctx->encrypt)
-                       {
-                       for(n=0 ; n < 16 ; n++)
-                               tmp[n] = in[n] ^ ctx->iv[n];
-                       rijndaelEncrypt(k->rd_key,k->rounds, tmp, out);
-                       memcpy(ctx->iv,out,16);
-                       }
-               else
-                       {
-                       memcpy(tmp, in, 16);
-                       rijndaelDecrypt(k->rd_key,k->rounds, in, out);
-                       for(n=0 ; n < 16 ; n++)
-                               out[n] ^= ctx->iv[n];
-                       memcpy(ctx->iv,tmp,16);
-                       }
-               inl-=16;
-               in+=16;
-               out+=16;
-               }
-       assert(inl == 0);
-       return 1;
-       }
 #endif