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openssl/crypto/evp/e_des3.c

 /* crypto/evp/e_des3.c */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
  * by Eric Young (eay@cryptsoft.com).
  * The implementation was written so as to conform with Netscapes SSL.
  * 
  * This library is free for commercial and non-commercial use as long as
  * the following conditions are aheared to.  The following conditions
@@ skipping 67 matching lines @@
     DES_key_schedule ks1;/* key schedule */
     DES_key_schedule ks2;/* key schedule (for ede) */
     DES_key_schedule ks3;/* key schedule (for ede3) */
     } DES_EDE_KEY;
 
 #define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
 
 /* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
 
 static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                              const unsigned char *in, unsigned int inl)
+                              const unsigned char *in, size_t inl)
 {
         BLOCK_CIPHER_ecb_loop()
                 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
                                  (DES_cblock *)(out + i),
                                  &data(ctx)->ks1, &data(ctx)->ks2,
                                  &data(ctx)->ks3,
                                  ctx->encrypt);
         return 1;
 }
 
 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                              const unsigned char *in, unsigned int inl)
+                              const unsigned char *in, size_t inl)
 {
-        DES_ede3_ofb64_encrypt(in, out, (long)inl,
+        if (inl>=EVP_MAXCHUNK)
+                {
+                DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                                &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
                                (DES_cblock *)ctx->iv, &ctx->num);
+                inl-=EVP_MAXCHUNK;
+                in +=EVP_MAXCHUNK;
+                out+=EVP_MAXCHUNK;
+                }
+        if (inl)
+                DES_ede3_ofb64_encrypt(in, out, (long)inl,
+                                &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+                               (DES_cblock *)ctx->iv, &ctx->num);
+
         return 1;
 }
 
 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                              const unsigned char *in, unsigned int inl)
+                              const unsigned char *in, size_t inl)
 {
 #ifdef KSSL_DEBUG
         {
         int i;
-        printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", (unsigned long)ctx, ctx->buf_len);
+        char *cp;
+        printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
         printf("\t iv= ");
         for(i=0;i<8;i++)
                 printf("%02X",ctx->iv[i]);
         printf("\n");
         }
 #endif    /* KSSL_DEBUG */
-        DES_ede3_cbc_encrypt(in, out, (long)inl,
+        if (inl>=EVP_MAXCHUNK)
+                {
+                DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
                              &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
                              (DES_cblock *)ctx->iv, ctx->encrypt);
+                inl-=EVP_MAXCHUNK;
+                in +=EVP_MAXCHUNK;
+                out+=EVP_MAXCHUNK;
+                }
+        if (inl)
+                DES_ede3_cbc_encrypt(in, out, (long)inl,
+                             &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+                             (DES_cblock *)ctx->iv, ctx->encrypt);
         return 1;
 }
 
 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                              const unsigned char *in, unsigned int inl)
+                              const unsigned char *in, size_t inl)
 {
-        DES_ede3_cfb64_encrypt(in, out, (long)inl, 
+        if (inl>=EVP_MAXCHUNK)
+                {
+                DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, 
                                &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
                                (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+                inl-=EVP_MAXCHUNK;
+                in +=EVP_MAXCHUNK;
+                out+=EVP_MAXCHUNK;
+                }
+        if (inl)
+                DES_ede3_cfb64_encrypt(in, out, (long)inl,
+                               &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+                               (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
         return 1;
 }
 
 /* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
    way, so wrap it here */
 static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                                const unsigned char *in, unsigned int inl)
+                                const unsigned char *in, size_t inl)
     {
-    unsigned int n;
+    size_t n;
     unsigned char c[1],d[1];
 
     for(n=0 ; n < inl ; ++n)
         {
         c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
         DES_ede3_cfb_encrypt(c,d,1,1,
                              &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
                              (DES_cblock *)ctx->iv,ctx->encrypt);
-        out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
+        out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
+                 ((d[0]&0x80) >> (unsigned int)(n%8));
         }
 
     return 1;
     }
 
 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                                const unsigned char *in, unsigned int inl)
+                                const unsigned char *in, size_t inl)
     {
-    DES_ede3_cfb_encrypt(in,out,8,inl,
+    while (inl>=EVP_MAXCHUNK)
+        {
+        DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
                          &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
                          (DES_cblock *)ctx->iv,ctx->encrypt);
+        inl-=EVP_MAXCHUNK;
+        in +=EVP_MAXCHUNK;
+        out+=EVP_MAXCHUNK;
+        }
+    if (inl)
+        DES_ede3_cfb_encrypt(in,out,8,(long)inl,
+                        &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
+                        (DES_cblock *)ctx->iv,ctx->encrypt);
     return 1;
     }
 
 BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
-                EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
-                        des_ede_init_key,
-                        NULL, NULL, NULL,
+                        EVP_CIPH_RAND_KEY, des_ede_init_key, NULL, 
+                        EVP_CIPHER_set_asn1_iv,
+                        EVP_CIPHER_get_asn1_iv,
                         des3_ctrl)
 
 #define des_ede3_cfb64_cipher des_ede_cfb64_cipher
 #define des_ede3_ofb_cipher des_ede_ofb_cipher
 #define des_ede3_cbc_cipher des_ede_cbc_cipher
 #define des_ede3_ecb_cipher des_ede_ecb_cipher
 
 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
-                EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
-                        des_ede3_init_key,
-                        NULL, NULL, NULL,
+                        EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL, 
+                        EVP_CIPHER_set_asn1_iv,
+                        EVP_CIPHER_get_asn1_iv,
                         des3_ctrl)
 
 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
-                EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
-                     des_ede3_init_key,
-                     NULL, NULL, NULL,
+                     EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
+                     EVP_CIPHER_set_asn1_iv,
+                     EVP_CIPHER_get_asn1_iv,
                      des3_ctrl)
 
 BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
-                EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
-                     des_ede3_init_key,
-                     NULL, NULL, NULL,
+                     EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
+                     EVP_CIPHER_set_asn1_iv,
+                     EVP_CIPHER_get_asn1_iv,
                      des3_ctrl)
 
 static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                             const unsigned char *iv, int enc)
         {
         DES_cblock *deskey = (DES_cblock *)key;
 #ifdef EVP_CHECK_DES_KEY
         if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
                 !! DES_set_key_checked(&deskey[1],&data(ctx)->ks2))
                 return 0;
 #else
         DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
         DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
 #endif
         memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
                sizeof(data(ctx)->ks1));
         return 1;
         }
 
 static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                              const unsigned char *iv, int enc)
         {
         DES_cblock *deskey = (DES_cblock *)key;
 #ifdef KSSL_DEBUG
         {
         int i;
-        printf("des_ede3_init_key(ctx=%lx)\n", (unsigned long)ctx);
+        printf("des_ede3_init_key(ctx=%lx)\n", ctx);
         printf("\tKEY= ");
         for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
         printf("\t IV= ");
         for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
         }
 #endif  /* KSSL_DEBUG */
 
 #ifdef EVP_CHECK_DES_KEY
         if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
                 || DES_set_key_checked(&deskey[1],&data(ctx)->ks2)
@@ skipping 32 matching lines @@
 const EVP_CIPHER *EVP_des_ede(void)
 {
         return &des_ede_ecb;
 }
 
 const EVP_CIPHER *EVP_des_ede3(void)
 {
         return &des_ede3_ecb;
 }
 #endif