X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=crypto%2Fevp%2Fp_seal.c;h=94c8462ab457081e4b6cb5605845fd94f71e0646;hb=HEAD;hp=50ea60235a9c994ee8307cc456a3921fdb4f17db;hpb=16cfc2c90d9e7776965db07c1f31bbec2f6c41e3;p=openssl.git

diff --git a/crypto/evp/p_seal.c b/crypto/evp/p_seal.c
index 50ea60235a..94c8462ab4 100644
--- a/crypto/evp/p_seal.c
+++ b/crypto/evp/p_seal.c
@@ -1,7 +1,7 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -9,6 +9,7 @@
 
 #include <stdio.h>
 #include "internal/cryptlib.h"
+#include "internal/provider.h"
 #include <openssl/rand.h>
 #include <openssl/rsa.h>
 #include <openssl/evp.h>
@@ -20,32 +21,59 @@ int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
                  EVP_PKEY **pubk, int npubk)
 {
     unsigned char key[EVP_MAX_KEY_LENGTH];
-    int i;
+    const OSSL_PROVIDER *prov;
+    OSSL_LIB_CTX *libctx = NULL;
+    EVP_PKEY_CTX *pctx = NULL;
+    const EVP_CIPHER *cipher;
+    int i, len;
+    int rv = 0;
 
-    if (type) {
+    if (type != NULL) {
         EVP_CIPHER_CTX_reset(ctx);
         if (!EVP_EncryptInit_ex(ctx, type, NULL, NULL, NULL))
             return 0;
     }
+    if ((cipher = EVP_CIPHER_CTX_get0_cipher(ctx)) != NULL
+            && (prov = EVP_CIPHER_get0_provider(cipher)) != NULL)
+        libctx = ossl_provider_libctx(prov);
     if ((npubk <= 0) || !pubk)
         return 1;
+
     if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
         return 0;
-    if (EVP_CIPHER_CTX_iv_length(ctx)
-        && RAND_bytes(iv, EVP_CIPHER_CTX_iv_length(ctx)) <= 0)
-        return 0;
+
+    len = EVP_CIPHER_CTX_get_iv_length(ctx);
+    if (len < 0 || RAND_priv_bytes_ex(libctx, iv, len, 0) <= 0)
+        goto err;
+
+    len = EVP_CIPHER_CTX_get_key_length(ctx);
+    if (len < 0)
+        goto err;
 
     if (!EVP_EncryptInit_ex(ctx, NULL, NULL, key, iv))
-        return 0;
+        goto err;
 
     for (i = 0; i < npubk; i++) {
-        ekl[i] =
-            EVP_PKEY_encrypt_old(ek[i], key, EVP_CIPHER_CTX_key_length(ctx),
-                                 pubk[i]);
-        if (ekl[i] <= 0)
-            return -1;
+        size_t keylen = len;
+
+        pctx = EVP_PKEY_CTX_new_from_pkey(libctx, pubk[i], NULL);
+        if (pctx == NULL) {
+            ERR_raise(ERR_LIB_EVP, ERR_R_EVP_LIB);
+            goto err;
+        }
+
+        if (EVP_PKEY_encrypt_init(pctx) <= 0
+            || EVP_PKEY_encrypt(pctx, ek[i], &keylen, key, keylen) <= 0)
+            goto err;
+        ekl[i] = (int)keylen;
+        EVP_PKEY_CTX_free(pctx);
     }
-    return npubk;
+    pctx = NULL;
+    rv = npubk;
+err:
+    EVP_PKEY_CTX_free(pctx);
+    OPENSSL_cleanse(key, sizeof(key));
+    return rv;
 }
 
 int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)