[mirror_edk2.git] / CryptoPkg / Library / BaseCryptLib / Pk / CryptPkcs7.c

/** @file\r
  PKCS#7 SignedData Verification Wrapper Implementation over OpenSSL.\r
\r
Copyright (c) 2009 - 2011, 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
\r
**/\r
\r
#include "InternalCryptLib.h"\r
\r
#include <openssl/objects.h>\r
#include <openssl/x509.h>\r
#include <openssl/pkcs7.h>\r
\r
\r
/**\r
  Verification callback function to override any existing callbacks in OpenSSL\r
  for intermediate certificate supports.\r
\r
  @param[in]  Status   Original status before calling this callback.\r
  @param[in]  Context  X509 store context.\r
\r
  @retval     1        Current X509 certificate is verified successfully.\r
  @retval     0        Verification failed.\r
\r
**/\r
STATIC int X509VerifyCb (int Status, X509_STORE_CTX *Context)\r
{\r
  X509_OBJECT  *Obj;\r
  int          Error;\r
  int          Index;\r
  int          Count;\r
\r
  Obj   = NULL;\r
  Error = X509_STORE_CTX_get_error (Context);\r
\r
  //\r
  // X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT and X509_V_ERR_UNABLE_TO_GET_ISSUER_\r
  // CERT_LOCALLY mean a X509 certificate is not self signed and its issuer\r
  // can not be found in X509_verify_cert of X509_vfy.c.\r
  // In order to support intermediate certificate node, we override the\r
  // errors if the certification is obtained from X509 store, i.e. it is\r
  // a trusted ceritifcate node that is enrolled by user.\r
  // Besides,X509_V_ERR_CERT_UNTRUSTED and X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE\r
  // are also ignored to enable such feature.\r
  //\r
  if ((Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) ||\r
      (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)) {\r
    Obj = (X509_OBJECT *) OPENSSL_malloc (sizeof (X509_OBJECT));\r
    if (Obj == NULL) {\r
      return 0;\r
    }\r
\r
    Obj->type      = X509_LU_X509;\r
    Obj->data.x509 = Context->current_cert;\r
\r
    CRYPTO_w_lock (CRYPTO_LOCK_X509_STORE);\r
\r
    if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
      Status = 1;\r
    } else {\r
      //\r
      // If any certificate in the chain is enrolled as trusted certificate,\r
      // pass the certificate verification.\r
      //\r
      if (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {\r
        Count = sk_X509_num (Context->chain);\r
        for (Index = 0; Index < Count; Index++) {\r
          Obj->data.x509 = sk_X509_value (Context->chain, Index);\r
          if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
            Status = 1;\r
            break;\r
          }\r
        }\r
      }\r
    }\r
\r
    CRYPTO_w_unlock (CRYPTO_LOCK_X509_STORE);\r
  }\r
\r
  if ((Error == X509_V_ERR_CERT_UNTRUSTED) ||\r
      (Error == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)) {\r
    Status = 1;\r
  }\r
\r
  if (Obj != NULL) {\r
    OPENSSL_free (Obj);\r
  }\r
\r
  return Status;\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
  application to perform PKCS#7 functionality validation.\r
\r
  @param[in]  PrivateKey       Pointer to the PEM-formatted private key data for\r
                               data signing.\r
  @param[in]  PrivateKeySize   Size of the PEM private key data in bytes.\r
  @param[in]  KeyPassword      NULL-terminated passphrase used for encrypted PEM\r
                               key data.\r
  @param[in]  InData           Pointer to the content to be signed.\r
  @param[in]  InDataSize       Size of InData in bytes.\r
  @param[in]  SignCert         Pointer to signer's DER-encoded certificate to sign with.\r
  @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] SignedDataSize   Size of SignedData in bytes.\r
\r
  @retval     TRUE             PKCS#7 data signing succeeded.\r
  @retval     FALSE            PKCS#7 data signing failed.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Pkcs7Sign (\r
  IN   CONST UINT8  *PrivateKey,\r
  IN   UINTN        PrivateKeySize,\r
  IN   CONST UINT8  *KeyPassword,\r
  IN   UINT8        *InData,\r
  IN   UINTN        InDataSize,\r
  IN   UINT8        *SignCert,\r
  IN   UINT8        *OtherCerts      OPTIONAL,\r
  OUT  UINT8        **SignedData,\r
  OUT  UINTN        *SignedDataSize\r
  )\r
{\r
  BOOLEAN   Status;\r
  EVP_PKEY  *Key;\r
  BIO       *DataBio;\r
  PKCS7     *Pkcs7;\r
  UINT8     *RsaContext;\r
  UINT8     *P7Data;\r
\r
  //\r
  // Check input parameters.\r
  //\r
  if ((PrivateKey == NULL) || (KeyPassword == NULL) || (InData == NULL)) {\r
    return FALSE;\r
  }\r
  \r
  if ((SignCert == NULL) || (SignedData == NULL) || (SignedDataSize == NULL)) {\r
    return FALSE;\r
  }\r
\r
  RsaContext = NULL;\r
  Key        = NULL;\r
  Pkcs7      = NULL;\r
  DataBio    = NULL;\r
  Status     = FALSE;\r
\r
  //\r
  // Retrieve RSA private key from PEM data.\r
  //\r
  Status = RsaGetPrivateKeyFromPem (\r
             PrivateKey,\r
             PrivateKeySize,\r
             (CONST CHAR8 *) KeyPassword,\r
             (VOID **) &RsaContext\r
             );\r
  if (!Status) {\r
    return Status;\r
  }\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
  RandomSeed (NULL, 0);\r
\r
  //\r
  // Construct OpenSSL EVP_PKEY for private key.\r
  //\r
  Key = EVP_PKEY_new ();\r
  if (Key == NULL) {\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
\r
  //\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
\r
  //\r
  // Create the PKCS#7 signedData structure.\r
  //\r
  Pkcs7 = PKCS7_sign (\r
            (X509 *) SignCert,\r
            Key,\r
            (STACK_OF(X509) *) OtherCerts,\r
            DataBio,\r
            PKCS7_BINARY\r
            );\r
  if (Pkcs7 == NULL) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Convert PKCS#7 signedData structure into DER-encoded buffer.\r
  //\r
  *SignedDataSize = i2d_PKCS7 (Pkcs7, NULL);\r
  if (*SignedDataSize == 0) {\r
    goto _Exit;\r
  }\r
  *SignedData     = OPENSSL_malloc (*SignedDataSize);\r
  P7Data          = *SignedData;\r
  *SignedDataSize = i2d_PKCS7 (Pkcs7, (unsigned char **) &P7Data);\r
\r
  Status = TRUE;\r
\r
_Exit:\r
  //\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
\r
  if (DataBio != NULL) {\r
    BIO_free (DataBio);\r
  }\r
\r
  if (Pkcs7 != NULL) {\r
    PKCS7_free (Pkcs7);\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Verifies the validility of a PKCS#7 signed data as described in "PKCS #7: Cryptographic\r
  Message Syntax Standard".\r
\r
  If P7Data is NULL, then ASSERT().\r
\r
  @param[in]  P7Data       Pointer to the PKCS#7 message to verify.\r
  @param[in]  P7Length     Length of the PKCS#7 message in bytes.\r
  @param[in]  TrustedCert  Pointer to a trusted/root certificate encoded in DER, which\r
                           is used for certificate chain verification.\r
  @param[in]  CertLength   Length of the trusted certificate in bytes.\r
  @param[in]  InData       Pointer to the content to be verified.\r
  @param[in]  DataLength   Length of InData in bytes.\r
\r
  @retval  TRUE  The specified PKCS#7 signed data is valid.\r
  @retval  FALSE Invalid PKCS#7 signed data.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Pkcs7Verify (\r
  IN  CONST UINT8  *P7Data,\r
  IN  UINTN        P7Length,\r
  IN  CONST UINT8  *TrustedCert,\r
  IN  UINTN        CertLength,\r
  IN  CONST UINT8  *InData,\r
  IN  UINTN        DataLength\r
  )\r
{\r
  PKCS7       *Pkcs7;\r
  BIO         *CertBio;\r
  BIO         *DataBio;\r
  BOOLEAN     Status;\r
  X509        *Cert;\r
  X509_STORE  *CertStore;\r
\r
  //\r
  // ASSERT if P7Data is NULL\r
  //\r
  ASSERT (P7Data != NULL);\r
\r
  Status    = FALSE;\r
  Pkcs7     = NULL;\r
  CertBio   = NULL;\r
  DataBio   = NULL;\r
  Cert      = NULL;\r
  CertStore = NULL;\r
\r
  //\r
  // Register & Initialize necessary digest algorithms for PKCS#7 Handling\r
  //\r
  EVP_add_digest (EVP_md5());\r
  EVP_add_digest (EVP_sha1());\r
  EVP_add_digest_alias (SN_sha1WithRSAEncryption, SN_sha1WithRSA);\r
  EVP_add_digest (EVP_sha256());\r
\r
  //\r
  // Retrieve PKCS#7 Data (DER encoding)\r
  //\r
  Pkcs7 = d2i_PKCS7 (NULL, &P7Data, (int)P7Length);\r
  if (Pkcs7 == NULL) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Check if it's PKCS#7 Signed Data (for Authenticode Scenario)\r
  //\r
  if (!PKCS7_type_is_signed (Pkcs7)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Read DER-encoded root certificate and Construct X509 Certificate\r
  //\r
  CertBio = BIO_new (BIO_s_mem ());\r
  BIO_write (CertBio, TrustedCert, (int)CertLength);\r
  if (CertBio == NULL) {\r
    goto _Exit;\r
  }\r
  Cert = d2i_X509_bio (CertBio, NULL);\r
  if (Cert == NULL) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Setup X509 Store for trusted certificate\r
  //\r
  CertStore = X509_STORE_new ();\r
  if (CertStore == NULL) {\r
    goto _Exit;\r
  }\r
  if (!(X509_STORE_add_cert (CertStore, Cert))) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Register customized X509 verification callback function to support\r
  // trusted intermediate certificate anchor.\r
  //\r
  CertStore->verify_cb = X509VerifyCb;\r
\r
  //\r
  // For generic PKCS#7 handling, InData may be NULL if the content is present\r
  // in PKCS#7 structure. So ignore NULL checking here.\r
  //\r
  DataBio = BIO_new (BIO_s_mem ());\r
  BIO_write (DataBio, InData, (int)DataLength);\r
\r
  //\r
  // Verifies the PKCS#7 signedData structure\r
  //\r
  Status = (BOOLEAN) PKCS7_verify (Pkcs7, NULL, CertStore, DataBio, NULL, PKCS7_BINARY);\r
\r
_Exit:\r
  //\r
  // Release Resources\r
  //\r
  BIO_free (DataBio);\r
  BIO_free (CertBio);\r
  X509_free (Cert);\r
  X509_STORE_free (CertStore);\r
  PKCS7_free (Pkcs7);\r
\r
  return Status;\r
}\r
Commit	Line	Data
97f98500 HT	1	/** @file\r
	2	PKCS#7 SignedData Verification Wrapper Implementation over OpenSSL.\r
	3	\r
b7d320f8	4	Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
97f98500 HT	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
a8c44645	15	#include "InternalCryptLib.h"\r
97f98500	16	\r
97f98500 HT	17	#include <openssl/objects.h>\r
	18	#include <openssl/x509.h>\r
	19	#include <openssl/pkcs7.h>\r
	20	\r
	21	\r
b7d320f8	22	/**\r
	23	Verification callback function to override any existing callbacks in OpenSSL\r
	24	for intermediate certificate supports.\r
	25	\r
	26	@param[in] Status Original status before calling this callback.\r
	27	@param[in] Context X509 store context.\r
	28	\r
	29	@retval 1 Current X509 certificate is verified successfully.\r
	30	@retval 0 Verification failed.\r
	31	\r
	32	**/\r
	33	STATIC int X509VerifyCb (int Status, X509_STORE_CTX *Context)\r
	34	{\r
	35	X509_OBJECT *Obj;\r
	36	int Error;\r
	37	int Index;\r
	38	int Count;\r
	39	\r
	40	Obj = NULL;\r
	41	Error = X509_STORE_CTX_get_error (Context);\r
	42	\r
	43	//\r
	44	// X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT and X509_V_ERR_UNABLE_TO_GET_ISSUER_\r
	45	// CERT_LOCALLY mean a X509 certificate is not self signed and its issuer\r
	46	// can not be found in X509_verify_cert of X509_vfy.c.\r
	47	// In order to support intermediate certificate node, we override the\r
	48	// errors if the certification is obtained from X509 store, i.e. it is\r
	49	// a trusted ceritifcate node that is enrolled by user.\r
	50	// Besides,X509_V_ERR_CERT_UNTRUSTED and X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE\r
	51	// are also ignored to enable such feature.\r
	52	//\r
	53	if ((Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) \|\|\r
	54	(Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)) {\r
	55	Obj = (X509_OBJECT *) OPENSSL_malloc (sizeof (X509_OBJECT));\r
	56	if (Obj == NULL) {\r
	57	return 0;\r
	58	}\r
	59	\r
	60	Obj->type = X509_LU_X509;\r
	61	Obj->data.x509 = Context->current_cert;\r
	62	\r
	63	CRYPTO_w_lock (CRYPTO_LOCK_X509_STORE);\r
	64	\r
	65	if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
	66	Status = 1;\r
	67	} else {\r
	68	//\r
	69	// If any certificate in the chain is enrolled as trusted certificate,\r
	70	// pass the certificate verification.\r
	71	//\r
	72	if (Error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {\r
	73	Count = sk_X509_num (Context->chain);\r
	74	for (Index = 0; Index < Count; Index++) {\r
	75	Obj->data.x509 = sk_X509_value (Context->chain, Index);\r
	76	if (X509_OBJECT_retrieve_match (Context->ctx->objs, Obj)) {\r
	77	Status = 1;\r
	78	break;\r
	79	}\r
	80	}\r
	81	}\r
	82	}\r
	83	\r
	84	CRYPTO_w_unlock (CRYPTO_LOCK_X509_STORE);\r
	85	}\r
86	\r
87	if ((Error == X509_V_ERR_CERT_UNTRUSTED) \|\|\r
88	(Error == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)) {\r
89	Status = 1;\r
90	}\r
91	\r
92	if (Obj != NULL) {\r
93	OPENSSL_free (Obj);\r
94	}\r
95	\r
96	return Status;\r
97	}\r
98	\r
99	/**\r
100	Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message\r
101	Syntax Standard, version 1.5". This interface is only intended to be used for\r
102	application to perform PKCS#7 functionality validation.\r
103	\r
104	@param[in] PrivateKey Pointer to the PEM-formatted private key data for\r
105	data signing.\r
106	@param[in] PrivateKeySize Size of the PEM private key data in bytes.\r
107	@param[in] KeyPassword NULL-terminated passphrase used for encrypted PEM\r
108	key data.\r
109	@param[in] InData Pointer to the content to be signed.\r
110	@param[in] InDataSize Size of InData in bytes.\r
111	@param[in] SignCert Pointer to signer's DER-encoded certificate to sign with.\r
112	@param[in] OtherCerts Pointer to an optional additional set of certificates to\r
113	include in the PKCS#7 signedData (e.g. any intermediate\r
114	CAs in the chain).\r
115	@param[out] SignedData Pointer to output PKCS#7 signedData.\r
116	@param[out] SignedDataSize Size of SignedData in bytes.\r
117	\r
118	@retval TRUE PKCS#7 data signing succeeded.\r
119	@retval FALSE PKCS#7 data signing failed.\r
120	\r
121	**/\r
122	BOOLEAN\r
123	EFIAPI\r
124	Pkcs7Sign (\r
125	IN CONST UINT8 *PrivateKey,\r
126	IN UINTN PrivateKeySize,\r
127	IN CONST UINT8 *KeyPassword,\r
128	IN UINT8 *InData,\r
129	IN UINTN InDataSize,\r
130	IN UINT8 *SignCert,\r
131	IN UINT8 *OtherCerts OPTIONAL,\r
132	OUT UINT8 **SignedData,\r
133	OUT UINTN *SignedDataSize\r
134	)\r
135	{\r
136	BOOLEAN Status;\r
137	EVP_PKEY *Key;\r
138	BIO *DataBio;\r
139	PKCS7 *Pkcs7;\r
140	UINT8 *RsaContext;\r
141	UINT8 *P7Data;\r
142	\r
143	//\r
144	// Check input parameters.\r
145	//\r
146	if ((PrivateKey == NULL) \|\| (KeyPassword == NULL) \|\| (InData == NULL)) {\r
147	return FALSE;\r
148	}\r
149	\r
150	if ((SignCert == NULL) \|\| (SignedData == NULL) \|\| (SignedDataSize == NULL)) {\r
151	return FALSE;\r
152	}\r
153	\r
154	RsaContext = NULL;\r
155	Key = NULL;\r
156	Pkcs7 = NULL;\r
157	DataBio = NULL;\r
158	Status = FALSE;\r
159	\r
160	//\r
161	// Retrieve RSA private key from PEM data.\r
162	//\r
163	Status = RsaGetPrivateKeyFromPem (\r
164	PrivateKey,\r
165	PrivateKeySize,\r
166	(CONST CHAR8 *) KeyPassword,\r
167	(VOID **) &RsaContext\r
168	);\r
169	if (!Status) {\r
170	return Status;\r
171	}\r
172	\r
173	//\r
174	// Register & Initialize necessary digest algorithms and PRNG for PKCS#7 Handling\r
175	//\r
176	EVP_add_digest (EVP_md5());\r
177	EVP_add_digest (EVP_sha1());\r
178	EVP_add_digest (EVP_sha256());\r
179	RandomSeed (NULL, 0);\r
180	\r
181	//\r
182	// Construct OpenSSL EVP_PKEY for private key.\r
183	//\r
184	Key = EVP_PKEY_new ();\r
185	if (Key == NULL) {\r
186	goto _Exit;\r
187	}\r
188	Key->save_type = EVP_PKEY_RSA;\r
189	Key->type = EVP_PKEY_type (EVP_PKEY_RSA);\r
190	Key->pkey.rsa = (RSA *) RsaContext;\r
191	\r
192	//\r
193	// Convert the data to be signed to BIO format. \r
194	//\r
195	DataBio = BIO_new (BIO_s_mem ());\r
196	BIO_write (DataBio, InData, (int) InDataSize);\r
197	\r
198	//\r
199	// Create the PKCS#7 signedData structure.\r
200	//\r
201	Pkcs7 = PKCS7_sign (\r
202	(X509 *) SignCert,\r
203	Key,\r
204	(STACK_OF(X509) *) OtherCerts,\r
205	DataBio,\r
206	PKCS7_BINARY\r
207	);\r
208	if (Pkcs7 == NULL) {\r
209	goto _Exit;\r
210	}\r
211	\r
212	//\r
213	// Convert PKCS#7 signedData structure into DER-encoded buffer.\r
214	//\r
215	*SignedDataSize = i2d_PKCS7 (Pkcs7, NULL);\r
216	if (*SignedDataSize == 0) {\r
217	goto _Exit;\r
218	}\r
219	SignedData = OPENSSL_malloc (SignedDataSize);\r
220	P7Data = *SignedData;\r
221	SignedDataSize = i2d_PKCS7 (Pkcs7, (unsigned char *) &P7Data);\r
222	\r
223	Status = TRUE;\r
224	\r
225	_Exit:\r
226	//\r
227	// Release Resources\r
228	//\r
229	if (RsaContext != NULL) {\r
230	RsaFree (RsaContext);\r
231	if (Key != NULL) {\r
232	Key->pkey.rsa = NULL;\r
233	}\r
234	}\r
235	\r
236	if (Key != NULL) {\r
237	EVP_PKEY_free (Key);\r
238	}\r
239	\r
240	if (DataBio != NULL) {\r
241	BIO_free (DataBio);\r
242	}\r
243	\r
244	if (Pkcs7 != NULL) {\r
245	PKCS7_free (Pkcs7);\r
246	}\r
247	\r
248	return Status;\r
249	}\r
250	\r
97f98500 HT	251	/**\r
	252	Verifies the validility of a PKCS#7 signed data as described in "PKCS #7: Cryptographic\r
	253	Message Syntax Standard".\r
	254	\r
	255	If P7Data is NULL, then ASSERT().\r
	256	\r
	257	@param[in] P7Data Pointer to the PKCS#7 message to verify.\r
	258	@param[in] P7Length Length of the PKCS#7 message in bytes.\r
	259	@param[in] TrustedCert Pointer to a trusted/root certificate encoded in DER, which\r
	260	is used for certificate chain verification.\r
	261	@param[in] CertLength Length of the trusted certificate in bytes.\r
	262	@param[in] InData Pointer to the content to be verified.\r
	263	@param[in] DataLength Length of InData in bytes.\r
	264	\r
a8c44645	265	@retval TRUE The specified PKCS#7 signed data is valid.\r
a8c44645	266	@retval FALSE Invalid PKCS#7 signed data.\r
97f98500 HT	267	\r
	268	**/\r
	269	BOOLEAN\r
	270	EFIAPI\r
	271	Pkcs7Verify (\r
	272	IN CONST UINT8 *P7Data,\r
	273	IN UINTN P7Length,\r
	274	IN CONST UINT8 *TrustedCert,\r
	275	IN UINTN CertLength,\r
	276	IN CONST UINT8 *InData,\r
	277	IN UINTN DataLength\r
	278	)\r
	279	{\r
	280	PKCS7 *Pkcs7;\r
97f98500 HT	281	BIO *CertBio;\r
	282	BIO *DataBio;\r
	283	BOOLEAN Status;\r
	284	X509 *Cert;\r
	285	X509_STORE *CertStore;\r
	286	\r
	287	//\r
	288	// ASSERT if P7Data is NULL\r
	289	//\r
	290	ASSERT (P7Data != NULL);\r
	291	\r
	292	Status = FALSE;\r
	293	Pkcs7 = NULL;\r
	294	CertBio = NULL;\r
	295	DataBio = NULL;\r
	296	Cert = NULL;\r
	297	CertStore = NULL;\r
	298	\r
	299	//\r
	300	// Register & Initialize necessary digest algorithms for PKCS#7 Handling\r
	301	//\r
	302	EVP_add_digest (EVP_md5());\r
	303	EVP_add_digest (EVP_sha1());\r
b7d320f8	304	EVP_add_digest_alias (SN_sha1WithRSAEncryption, SN_sha1WithRSA);\r
97f98500 HT	305	EVP_add_digest (EVP_sha256());\r
	306	\r
	307	//\r
	308	// Retrieve PKCS#7 Data (DER encoding)\r
	309	//\r
	310	Pkcs7 = d2i_PKCS7 (NULL, &P7Data, (int)P7Length);\r
	311	if (Pkcs7 == NULL) {\r
	312	goto _Exit;\r
	313	}\r
	314	\r
	315	//\r
	316	// Check if it's PKCS#7 Signed Data (for Authenticode Scenario)\r
	317	//\r
	318	if (!PKCS7_type_is_signed (Pkcs7)) {\r
	319	goto _Exit;\r
	320	}\r
	321	\r
97f98500 HT	322	//\r
	323	// Read DER-encoded root certificate and Construct X509 Certificate\r
	324	//\r
	325	CertBio = BIO_new (BIO_s_mem ());\r
	326	BIO_write (CertBio, TrustedCert, (int)CertLength);\r
	327	if (CertBio == NULL) {\r
	328	goto _Exit;\r
	329	}\r
	330	Cert = d2i_X509_bio (CertBio, NULL);\r
	331	if (Cert == NULL) {\r
	332	goto _Exit;\r
	333	}\r
	334	\r
	335	//\r
	336	// Setup X509 Store for trusted certificate\r
	337	//\r
	338	CertStore = X509_STORE_new ();\r
	339	if (CertStore == NULL) {\r
	340	goto _Exit;\r
	341	}\r
	342	if (!(X509_STORE_add_cert (CertStore, Cert))) {\r
	343	goto _Exit;\r
	344	}\r
	345	\r
b7d320f8	346	//\r
	347	// Register customized X509 verification callback function to support\r
	348	// trusted intermediate certificate anchor.\r
	349	//\r
	350	CertStore->verify_cb = X509VerifyCb;\r
	351	\r
97f98500 HT	352	//\r
	353	// For generic PKCS#7 handling, InData may be NULL if the content is present\r
	354	// in PKCS#7 structure. So ignore NULL checking here.\r
	355	//\r
	356	DataBio = BIO_new (BIO_s_mem ());\r
	357	BIO_write (DataBio, InData, (int)DataLength);\r
	358	\r
	359	//\r
	360	// Verifies the PKCS#7 signedData structure\r
	361	//\r
b7d320f8	362	Status = (BOOLEAN) PKCS7_verify (Pkcs7, NULL, CertStore, DataBio, NULL, PKCS7_BINARY);\r
97f98500 HT	363	\r
	364	_Exit:\r
	365	//\r
	366	// Release Resources\r
	367	//\r
	368	BIO_free (DataBio);\r
	369	BIO_free (CertBio);\r
	370	X509_free (Cert);\r
	371	X509_STORE_free (CertStore);\r
	372	PKCS7_free (Pkcs7);\r
	373	\r
	374	return Status;\r
	375	}\r