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532616bb | 1 | /** @file\r |
2 | PKCS#7 SignedData Sign Wrapper Implementation over OpenSSL.\r | |
3 | \r | |
630f67dd | 4 | Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>\r |
2009f6b4 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
532616bb | 6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include "InternalCryptLib.h"\r | |
10 | \r | |
11 | #include <openssl/objects.h>\r | |
12 | #include <openssl/x509.h>\r | |
13 | #include <openssl/pkcs7.h>\r | |
14 | \r | |
532616bb | 15 | /**\r |
16 | Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message\r | |
17 | Syntax Standard, version 1.5". This interface is only intended to be used for\r | |
18 | application to perform PKCS#7 functionality validation.\r | |
19 | \r | |
20 | @param[in] PrivateKey Pointer to the PEM-formatted private key data for\r | |
21 | data signing.\r | |
22 | @param[in] PrivateKeySize Size of the PEM private key data in bytes.\r | |
23 | @param[in] KeyPassword NULL-terminated passphrase used for encrypted PEM\r | |
24 | key data.\r | |
25 | @param[in] InData Pointer to the content to be signed.\r | |
26 | @param[in] InDataSize Size of InData in bytes.\r | |
27 | @param[in] SignCert Pointer to signer's DER-encoded certificate to sign with.\r | |
28 | @param[in] OtherCerts Pointer to an optional additional set of certificates to\r | |
29 | include in the PKCS#7 signedData (e.g. any intermediate\r | |
30 | CAs in the chain).\r | |
6fe575d0 LQ |
31 | @param[out] SignedData Pointer to output PKCS#7 signedData. It's caller's\r |
32 | responsibility to free the buffer with FreePool().\r | |
532616bb | 33 | @param[out] SignedDataSize Size of SignedData in bytes.\r |
34 | \r | |
35 | @retval TRUE PKCS#7 data signing succeeded.\r | |
36 | @retval FALSE PKCS#7 data signing failed.\r | |
37 | \r | |
38 | **/\r | |
39 | BOOLEAN\r | |
40 | EFIAPI\r | |
41 | Pkcs7Sign (\r | |
42 | IN CONST UINT8 *PrivateKey,\r | |
43 | IN UINTN PrivateKeySize,\r | |
44 | IN CONST UINT8 *KeyPassword,\r | |
45 | IN UINT8 *InData,\r | |
46 | IN UINTN InDataSize,\r | |
47 | IN UINT8 *SignCert,\r | |
48 | IN UINT8 *OtherCerts OPTIONAL,\r | |
49 | OUT UINT8 **SignedData,\r | |
50 | OUT UINTN *SignedDataSize\r | |
51 | )\r | |
52 | {\r | |
53 | BOOLEAN Status;\r | |
54 | EVP_PKEY *Key;\r | |
55 | BIO *DataBio;\r | |
56 | PKCS7 *Pkcs7;\r | |
57 | UINT8 *RsaContext;\r | |
58 | UINT8 *P7Data;\r | |
59 | UINTN P7DataSize;\r | |
60 | UINT8 *Tmp;\r | |
61 | \r | |
62 | //\r | |
63 | // Check input parameters.\r | |
64 | //\r | |
65 | if (PrivateKey == NULL || KeyPassword == NULL || InData == NULL ||\r | |
66 | SignCert == NULL || SignedData == NULL || SignedDataSize == NULL || InDataSize > INT_MAX) {\r | |
67 | return FALSE;\r | |
68 | }\r | |
69 | \r | |
70 | RsaContext = NULL;\r | |
71 | Key = NULL;\r | |
72 | Pkcs7 = NULL;\r | |
73 | DataBio = NULL;\r | |
74 | Status = FALSE;\r | |
75 | \r | |
76 | //\r | |
77 | // Retrieve RSA private key from PEM data.\r | |
78 | //\r | |
79 | Status = RsaGetPrivateKeyFromPem (\r | |
80 | PrivateKey,\r | |
81 | PrivateKeySize,\r | |
82 | (CONST CHAR8 *) KeyPassword,\r | |
83 | (VOID **) &RsaContext\r | |
84 | );\r | |
85 | if (!Status) {\r | |
86 | return Status;\r | |
87 | }\r | |
88 | \r | |
dda39f3a | 89 | Status = FALSE;\r |
90 | \r | |
532616bb | 91 | //\r |
92 | // Register & Initialize necessary digest algorithms and PRNG for PKCS#7 Handling\r | |
93 | //\r | |
dda39f3a | 94 | if (EVP_add_digest (EVP_md5 ()) == 0) {\r |
95 | goto _Exit;\r | |
96 | }\r | |
97 | if (EVP_add_digest (EVP_sha1 ()) == 0) {\r | |
98 | goto _Exit;\r | |
99 | }\r | |
100 | if (EVP_add_digest (EVP_sha256 ()) == 0) {\r | |
101 | goto _Exit;\r | |
102 | }\r | |
103 | \r | |
532616bb | 104 | RandomSeed (NULL, 0);\r |
105 | \r | |
106 | //\r | |
107 | // Construct OpenSSL EVP_PKEY for private key.\r | |
108 | //\r | |
109 | Key = EVP_PKEY_new ();\r | |
110 | if (Key == NULL) {\r | |
532616bb | 111 | goto _Exit;\r |
112 | }\r | |
1463ce18 QL |
113 | if (EVP_PKEY_assign_RSA (Key, (RSA *) RsaContext) == 0) {\r |
114 | goto _Exit;\r | |
115 | }\r | |
532616bb | 116 | \r |
117 | //\r | |
630f67dd | 118 | // Convert the data to be signed to BIO format.\r |
532616bb | 119 | //\r |
120 | DataBio = BIO_new (BIO_s_mem ());\r | |
5b2956ea YT |
121 | if (DataBio == NULL) {\r |
122 | goto _Exit;\r | |
123 | }\r | |
124 | \r | |
125 | if (BIO_write (DataBio, InData, (int) InDataSize) <= 0) {\r | |
126 | goto _Exit;\r | |
127 | }\r | |
532616bb | 128 | \r |
129 | //\r | |
130 | // Create the PKCS#7 signedData structure.\r | |
131 | //\r | |
132 | Pkcs7 = PKCS7_sign (\r | |
133 | (X509 *) SignCert,\r | |
134 | Key,\r | |
135 | (STACK_OF(X509) *) OtherCerts,\r | |
136 | DataBio,\r | |
137 | PKCS7_BINARY | PKCS7_NOATTR | PKCS7_DETACHED\r | |
138 | );\r | |
139 | if (Pkcs7 == NULL) {\r | |
532616bb | 140 | goto _Exit;\r |
141 | }\r | |
142 | \r | |
143 | //\r | |
144 | // Convert PKCS#7 signedData structure into DER-encoded buffer.\r | |
145 | //\r | |
146 | P7DataSize = i2d_PKCS7 (Pkcs7, NULL);\r | |
147 | if (P7DataSize <= 19) {\r | |
532616bb | 148 | goto _Exit;\r |
149 | }\r | |
150 | \r | |
151 | P7Data = malloc (P7DataSize);\r | |
152 | if (P7Data == NULL) {\r | |
532616bb | 153 | goto _Exit;\r |
154 | }\r | |
155 | \r | |
156 | Tmp = P7Data;\r | |
157 | P7DataSize = i2d_PKCS7 (Pkcs7, (unsigned char **) &Tmp);\r | |
5b2956ea | 158 | ASSERT (P7DataSize > 19);\r |
532616bb | 159 | \r |
160 | //\r | |
161 | // Strip ContentInfo to content only for signeddata. The data be trimmed off\r | |
162 | // is totally 19 bytes.\r | |
163 | //\r | |
164 | *SignedDataSize = P7DataSize - 19;\r | |
6fe575d0 | 165 | *SignedData = AllocatePool (*SignedDataSize);\r |
532616bb | 166 | if (*SignedData == NULL) {\r |
532616bb | 167 | OPENSSL_free (P7Data);\r |
168 | goto _Exit;\r | |
169 | }\r | |
170 | \r | |
171 | CopyMem (*SignedData, P7Data + 19, *SignedDataSize);\r | |
1463ce18 | 172 | \r |
532616bb | 173 | OPENSSL_free (P7Data);\r |
174 | \r | |
175 | Status = TRUE;\r | |
176 | \r | |
177 | _Exit:\r | |
178 | //\r | |
179 | // Release Resources\r | |
180 | //\r | |
532616bb | 181 | if (Key != NULL) {\r |
182 | EVP_PKEY_free (Key);\r | |
183 | }\r | |
184 | \r | |
185 | if (DataBio != NULL) {\r | |
186 | BIO_free (DataBio);\r | |
187 | }\r | |
188 | \r | |
189 | if (Pkcs7 != NULL) {\r | |
190 | PKCS7_free (Pkcs7);\r | |
191 | }\r | |
192 | \r | |
193 | return Status;\r | |
194 | }\r |