CryptoPkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / CryptoPkg / Library / BaseCryptLib / Pk / CryptPkcs7Sign.c

diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Sign.c b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Sign.c
index b275ab851ed192e1fc08c2f5cf1d19ef0a9cde6a..442f573f8bddb108bd0859f69c8fef59f903006b 100644 (file)
--- a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Sign.c
+++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Sign.c
@@ -1,14 +1,8 @@
 /** @file\r
   PKCS#7 SignedData Sign Wrapper Implementation over OpenSSL.\r
 \r
-Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution.  The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -18,7 +12,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <openssl/x509.h>\r
 #include <openssl/pkcs7.h>\r
 \r
-\r
 /**\r
   Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message\r
   Syntax Standard, version 1.5". This interface is only intended to be used for\r
@@ -35,7 +28,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   @param[in]  OtherCerts       Pointer to an optional additional set of certificates to\r
                                include in the PKCS#7 signedData (e.g. any intermediate\r
                                CAs in the chain).\r
-  @param[out] SignedData       Pointer to output PKCS#7 signedData.\r
+  @param[out] SignedData       Pointer to output PKCS#7 signedData. It's caller's\r
+                               responsibility to free the buffer with FreePool().\r
   @param[out] SignedDataSize   Size of SignedData in bytes.\r
 \r
   @retval     TRUE             PKCS#7 data signing succeeded.\r
@@ -92,12 +86,21 @@ Pkcs7Sign (
     return Status;\r
   }\r
 \r
+  Status = FALSE;\r
+\r
   //\r
   // Register & Initialize necessary digest algorithms and PRNG for PKCS#7 Handling\r
   //\r
-  EVP_add_digest (EVP_md5());\r
-  EVP_add_digest (EVP_sha1());\r
-  EVP_add_digest (EVP_sha256());\r
+  if (EVP_add_digest (EVP_md5 ()) == 0) {\r
+    goto _Exit;\r
+  }\r
+  if (EVP_add_digest (EVP_sha1 ()) == 0) {\r
+    goto _Exit;\r
+  }\r
+  if (EVP_add_digest (EVP_sha256 ()) == 0) {\r
+    goto _Exit;\r
+  }\r
+\r
   RandomSeed (NULL, 0);\r
 \r
   //\r
@@ -105,18 +108,23 @@ Pkcs7Sign (
   //\r
   Key = EVP_PKEY_new ();\r
   if (Key == NULL) {\r
-    Status = FALSE;\r
     goto _Exit;\r
   }\r
-  Key->save_type = EVP_PKEY_RSA;\r
-  Key->type      = EVP_PKEY_type (EVP_PKEY_RSA);\r
-  Key->pkey.rsa  = (RSA *) RsaContext;\r
+  if (EVP_PKEY_assign_RSA (Key, (RSA *) RsaContext) == 0) {\r
+    goto _Exit;\r
+  }\r
 \r
   //\r
-  // Convert the data to be signed to BIO format. \r
+  // Convert the data to be signed to BIO format.\r
   //\r
   DataBio = BIO_new (BIO_s_mem ());\r
-  BIO_write (DataBio, InData, (int) InDataSize);\r
+  if (DataBio == NULL) {\r
+    goto _Exit;\r
+  }\r
+\r
+  if (BIO_write (DataBio, InData, (int) InDataSize) <= 0) {\r
+    goto _Exit;\r
+  }\r
 \r
   //\r
   // Create the PKCS#7 signedData structure.\r
@@ -129,7 +137,6 @@ Pkcs7Sign (
             PKCS7_BINARY | PKCS7_NOATTR | PKCS7_DETACHED\r
             );\r
   if (Pkcs7 == NULL) {\r
-    Status = FALSE;\r
     goto _Exit;\r
   }\r
 \r
@@ -138,33 +145,31 @@ Pkcs7Sign (
   //\r
   P7DataSize = i2d_PKCS7 (Pkcs7, NULL);\r
   if (P7DataSize <= 19) {\r
-    Status = FALSE;\r
     goto _Exit;\r
   }\r
 \r
   P7Data     = malloc (P7DataSize);\r
   if (P7Data == NULL) {\r
-    Status = FALSE;\r
     goto _Exit;\r
   }\r
 \r
   Tmp        = P7Data;\r
   P7DataSize = i2d_PKCS7 (Pkcs7, (unsigned char **) &Tmp);\r
+  ASSERT (P7DataSize > 19);\r
 \r
   //\r
   // Strip ContentInfo to content only for signeddata. The data be trimmed off\r
   // is totally 19 bytes.\r
   //\r
   *SignedDataSize = P7DataSize - 19;\r
-  *SignedData     = malloc (*SignedDataSize);\r
+  *SignedData     = AllocatePool (*SignedDataSize);\r
   if (*SignedData == NULL) {\r
-    Status = FALSE;\r
     OPENSSL_free (P7Data);\r
     goto _Exit;\r
   }\r
 \r
   CopyMem (*SignedData, P7Data + 19, *SignedDataSize);\r
-  \r
+\r
   OPENSSL_free (P7Data);\r
 \r
   Status = TRUE;\r
@@ -173,13 +178,6 @@ _Exit:
   //\r
   // Release Resources\r
   //\r
-  if (RsaContext != NULL) {\r
-    RsaFree (RsaContext);\r
-    if (Key != NULL) {\r
-      Key->pkey.rsa = NULL;\r
-    }\r
-  }\r
-\r
   if (Key != NULL) {\r
     EVP_PKEY_free (Key);\r
   }\r
@@ -194,4 +192,3 @@ _Exit:
 \r
   return Status;\r
 }\r
-\r