Use local IV storage in e_des3.c

Inline the pre-13273237a65d46186b6bea0b51aec90670d4598a versions
of EVP_CIPHER_CTX_iv(), EVP_CIPHER_CTX_original_iv(), and
EVP_CIPHER_CTX_iv_noconst() in e_des3.c.

For the legacy implementations, there's no need to use an
in-provider storage for the IV, when the crypto operations
themselves will be performed outside of the provider.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/12233)

1 files changed, 16 insertions, 21 deletions

diff --git a/crypto/evp/e_des3.c b/crypto/evp/e_des3.c
index 3f7802ef1f..be4030895a 100644
--- a/crypto/evp/e_des3.c
+++ b/crypto/evp/e_des3.c
@@ -87,7 +87,7 @@ static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
         DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                                &data(ctx)->ks1, &data(ctx)->ks2,
                                &data(ctx)->ks3,
-                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                               (DES_cblock *)ctx->iv,
                                &num);
         EVP_CIPHER_CTX_set_num(ctx, num);
         inl -= EVP_MAXCHUNK;
@@ -99,7 +99,7 @@ static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
         DES_ede3_ofb64_encrypt(in, out, (long)inl,
                                &data(ctx)->ks1, &data(ctx)->ks2,
                                &data(ctx)->ks3,
-                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                               (DES_cblock *)ctx->iv,
                                &num);
         EVP_CIPHER_CTX_set_num(ctx, num);
     }
@@ -113,14 +113,14 @@ static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 
     if (dat->stream.cbc != NULL) {
         (*dat->stream.cbc) (in, out, inl, dat->ks.ks,
-                            EVP_CIPHER_CTX_iv_noconst(ctx));
+                            ctx->iv);
         return 1;
     }
 
     while (inl >= EVP_MAXCHUNK) {
         DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
                              &dat->ks1, &dat->ks2, &dat->ks3,
-                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                             (DES_cblock *)ctx->iv,
                              EVP_CIPHER_CTX_encrypting(ctx));
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
@@ -129,7 +129,7 @@ static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
     if (inl)
         DES_ede3_cbc_encrypt(in, out, (long)inl,
                              &dat->ks1, &dat->ks2, &dat->ks3,
-                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                             (DES_cblock *)ctx->iv,
                              EVP_CIPHER_CTX_encrypting(ctx));
     return 1;
 }
@@ -141,8 +141,7 @@ static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
         int num = EVP_CIPHER_CTX_num(ctx);
         DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                                &data(ctx)->ks1, &data(ctx)->ks2,
-                               &data(ctx)->ks3,
-                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                               &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                                &num, EVP_CIPHER_CTX_encrypting(ctx));
         EVP_CIPHER_CTX_set_num(ctx, num);
         inl -= EVP_MAXCHUNK;
@@ -153,8 +152,7 @@ static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
         int num = EVP_CIPHER_CTX_num(ctx);
         DES_ede3_cfb64_encrypt(in, out, (long)inl,
                                &data(ctx)->ks1, &data(ctx)->ks2,
-                               &data(ctx)->ks3,
-                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                               &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                                &num, EVP_CIPHER_CTX_encrypting(ctx));
         EVP_CIPHER_CTX_set_num(ctx, num);
     }
@@ -177,8 +175,7 @@ static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
         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 *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                             &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                              EVP_CIPHER_CTX_encrypting(ctx));
         out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
             | ((d[0] & 0x80) >> (unsigned int)(n % 8));
@@ -193,8 +190,7 @@ static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
     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 *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                             &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                              EVP_CIPHER_CTX_encrypting(ctx));
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
@@ -203,8 +199,7 @@ static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
     if (inl)
         DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
                              &data(ctx)->ks1, &data(ctx)->ks2,
-                             &data(ctx)->ks3,
-                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                             &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                              EVP_CIPHER_CTX_encrypting(ctx));
     return 1;
 }
@@ -330,7 +325,7 @@ static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
         return -1;
     if (out == NULL)
         return inl - 16;
-    memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
+    memcpy(ctx->iv, wrap_iv, 8);
     /* Decrypt first block which will end up as icv */
     des_ede_cbc_cipher(ctx, icv, in, 8);
     /* Decrypt central blocks */
@@ -348,7 +343,7 @@ static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
     /* Reverse order of everything */
     BUF_reverse(icv, NULL, 8);
     BUF_reverse(out, NULL, inl - 16);
-    BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
+    BUF_reverse(ctx->iv, iv, 8);
     /* Decrypt again using new IV */
     des_ede_cbc_cipher(ctx, out, out, inl - 16);
     des_ede_cbc_cipher(ctx, icv, icv, 8);
@@ -360,7 +355,7 @@ static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
     OPENSSL_cleanse(icv, 8);
     OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
     OPENSSL_cleanse(iv, 8);
-    OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
+    OPENSSL_cleanse(ctx->iv, 8);
     if (rv == -1)
         OPENSSL_cleanse(out, inl - 16);
 
@@ -380,13 +375,13 @@ static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
     memcpy(out + inl + 8, sha1tmp, 8);
     OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
     /* Generate random IV */
-    if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
+    if (RAND_bytes(ctx->iv, 8) <= 0)
         return -1;
-    memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
+    memcpy(out, ctx->iv, 8);
     /* Encrypt everything after IV in place */
     des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
     BUF_reverse(out, NULL, inl + 16);
-    memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
+    memcpy(ctx->iv, wrap_iv, 8);
     des_ede_cbc_cipher(ctx, out, out, inl + 16);
     return inl + 16;
 }