[mirror_edk2.git] / CryptoPkg / Library / BaseCryptLib / Pk / CryptX509.c

/** @file\r
  X.509 Certificate Handler Wrapper Implementation over OpenSSL.\r
\r
Copyright (c) 2010 - 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
#include <openssl/x509.h>\r
\r
\r
/**\r
  Construct a X509 object from DER-encoded certificate data.\r
\r
  If Cert is NULL, then ASSERT().\r
  If SingleX509Cert is NULL, then ASSERT().\r
\r
  @param[in]  Cert            Pointer to the DER-encoded certificate data.\r
  @param[in]  CertSize        The size of certificate data in bytes.\r
  @param[out] SingleX509Cert  The generated X509 object.\r
\r
  @retval     TRUE            The X509 object generation succeeded.\r
  @retval     FALSE           The operation failed.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
X509ConstructCertificate (\r
  IN   CONST UINT8  *Cert,\r
  IN   UINTN        CertSize,\r
  OUT  UINT8        **SingleX509Cert\r
  )\r
{\r
  BIO      *CertBio;\r
  X509     *X509Cert;\r
  BOOLEAN  Status;\r
\r
  //\r
  // ASSERT if Cert is NULL or SingleX509Cert is NULL.\r
  //\r
  ASSERT (Cert != NULL);\r
  ASSERT (SingleX509Cert != NULL);\r
\r
  Status = FALSE;\r
\r
  //\r
  // Read DER-encoded X509 Certificate and Construct X509 object.\r
  //\r
  CertBio = BIO_new (BIO_s_mem ());\r
  BIO_write (CertBio, Cert, (int) CertSize);\r
  if (CertBio == NULL) {\r
    goto _Exit;\r
  }\r
  X509Cert = d2i_X509_bio (CertBio, NULL);\r
  if (X509Cert == NULL) {\r
    goto _Exit;\r
  }\r
\r
  *SingleX509Cert = (UINT8 *) X509Cert;\r
  Status = TRUE;\r
\r
_Exit:\r
  //\r
  // Release Resources.\r
  //\r
  BIO_free (CertBio);\r
\r
  return Status;\r
}\r
\r
/**\r
  Construct a X509 stack object from a list of DER-encoded certificate data.\r
\r
  If X509Stack is NULL, then ASSERT().\r
\r
  @param[in, out]  X509Stack  On input, pointer to an existing X509 stack object.\r
                              On output, pointer to the X509 stack object with new\r
                              inserted X509 certificate.\r
  @param           ...        A list of DER-encoded single certificate data followed\r
                              by certificate size. A NULL terminates the list. The\r
                              pairs are the arguments to X509ConstructCertificate().\r
                                 \r
  @retval     TRUE            The X509 stack construction succeeded.\r
  @retval     FALSE           The construction operation failed.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
X509ConstructCertificateStack (\r
  IN OUT  UINT8  **X509Stack,\r
  ...  \r
  )\r
{\r
  UINT8           *Cert;\r
  UINTN           CertSize;\r
  X509            *X509Cert;\r
  STACK_OF(X509)  *CertStack;\r
  BOOLEAN         Status;\r
  VA_LIST         Args;\r
  UINTN           Index;\r
\r
  //\r
  // ASSERT if input X509Stack is NULL.\r
  //\r
  ASSERT (X509Stack != NULL);\r
\r
  Status = FALSE;\r
\r
  //\r
  // Initialize X509 stack object.\r
  //\r
  CertStack = (STACK_OF(X509) *) (*X509Stack);\r
  if (CertStack == NULL) {\r
    CertStack = sk_X509_new_null ();\r
    if (CertStack == NULL) {\r
      return Status;\r
    }\r
  }\r
\r
  VA_START (Args, X509Stack);\r
\r
  for (Index = 0; ; Index++) {\r
    //\r
    // If Cert is NULL, then it is the end of the list.\r
    //\r
    Cert = VA_ARG (Args, UINT8 *);\r
    if (Cert == NULL) {\r
      break;\r
    }\r
\r
    CertSize = VA_ARG (Args, UINTN);\r
\r
    //\r
    // Construct X509 Object from the given DER-encoded certificate data.\r
    //\r
    Status = X509ConstructCertificate (\r
               (CONST UINT8 *) Cert,\r
               CertSize,\r
               (UINT8 **) &X509Cert\r
               );\r
    if (!Status) {\r
      X509_free (X509Cert);\r
      break;\r
    }\r
\r
    //\r
    // Insert the new X509 object into X509 stack object.\r
    //\r
    sk_X509_push (CertStack, X509Cert);\r
  }\r
\r
  VA_END (Args);\r
\r
  if (!Status) {\r
    sk_X509_pop_free (CertStack, X509_free);\r
  } else {\r
    *X509Stack = (UINT8 *) CertStack;\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Release the specified X509 object.\r
\r
  If X509Cert is NULL, then ASSERT().\r
\r
  @param[in]  X509Cert  Pointer to the X509 object to be released.\r
\r
**/\r
VOID\r
EFIAPI\r
X509Free (\r
  IN  VOID  *X509Cert\r
  )\r
{\r
  ASSERT (X509Cert != NULL);\r
\r
  //\r
  // Free OpenSSL X509 object.\r
  //\r
  X509_free ((X509 *) X509Cert);\r
}\r
\r
/**\r
  Release the specified X509 stack object.\r
\r
  If X509Stack is NULL, then ASSERT().\r
\r
  @param[in]  X509Stack  Pointer to the X509 stack object to be released.\r
\r
**/\r
VOID\r
EFIAPI\r
X509StackFree (\r
  IN  VOID  *X509Stack\r
  )\r
{\r
  ASSERT (X509Stack != NULL);\r
\r
  //\r
  // Free OpenSSL X509 stack object.\r
  //\r
  sk_X509_pop_free ((STACK_OF(X509) *) X509Stack, X509_free);\r
}\r
\r
/**\r
  Retrieve the subject bytes from one X.509 certificate.\r
\r
  @param[in]      Cert         Pointer to the DER-encoded X509 certificate.\r
  @param[in]      CertSize     Size of the X509 certificate in bytes.\r
  @param[out]     CertSubject  Pointer to the retrieved certificate subject bytes.\r
  @param[in, out] SubjectSize  The size in bytes of the CertSubject buffer on input,\r
                               and the size of buffer returned CertSubject on output.\r
\r
  If Cert is NULL, then ASSERT().\r
  If SubjectSize is NULL, then ASSERT().\r
\r
  @retval  TRUE   The certificate subject retrieved successfully.\r
  @retval  FALSE  Invalid certificate, or the SubjectSize is too small for the result.\r
                  The SubjectSize will be updated with the required size.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
X509GetSubjectName (\r
  IN      CONST UINT8  *Cert,\r
  IN      UINTN        CertSize,\r
  OUT     UINT8        *CertSubject,\r
  IN OUT  UINTN        *SubjectSize\r
  )\r
{\r
  BOOLEAN    Status;\r
  X509       *X509Cert;\r
  X509_NAME  *X509Name;\r
\r
  //\r
  // ASSERT if Cert is NULL or SubjectSize is NULL.\r
  //\r
  ASSERT (Cert        != NULL);\r
  ASSERT (SubjectSize != NULL);\r
\r
  Status   = FALSE;\r
  X509Cert = NULL;\r
\r
  //\r
  // Read DER-encoded X509 Certificate and Construct X509 object.\r
  //\r
  Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
  if ((X509Cert == NULL) || (!Status)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Retrieve subject name from certificate object.\r
  //\r
  X509Name = X509_get_subject_name (X509Cert);\r
  if (*SubjectSize < (UINTN) X509Name->bytes->length) {\r
    *SubjectSize = (UINTN) X509Name->bytes->length;\r
    goto _Exit;\r
  }\r
  *SubjectSize = (UINTN) X509Name->bytes->length;\r
  if (CertSubject != NULL) {\r
    CopyMem (CertSubject, (UINT8 *)X509Name->bytes->data, *SubjectSize);\r
    Status = TRUE;\r
  }\r
\r
_Exit:\r
  //\r
  // Release Resources.\r
  //\r
  X509_free (X509Cert);\r
\r
  return Status;\r
}\r
\r
/**\r
  Retrieve the RSA Public Key from one DER-encoded X509 certificate.\r
\r
  @param[in]  Cert         Pointer to the DER-encoded X509 certificate.\r
  @param[in]  CertSize     Size of the X509 certificate in bytes.\r
  @param[out] RsaContext   Pointer to new-generated RSA context which contain the retrieved\r
                           RSA public key component. Use RsaFree() function to free the\r
                           resource.\r
\r
  If Cert is NULL, then ASSERT().\r
  If RsaContext is NULL, then ASSERT().\r
\r
  @retval  TRUE   RSA Public Key was retrieved successfully.\r
  @retval  FALSE  Fail to retrieve RSA public key from X509 certificate.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
RsaGetPublicKeyFromX509 (\r
  IN   CONST UINT8  *Cert,\r
  IN   UINTN        CertSize,\r
  OUT  VOID         **RsaContext\r
  )\r
{\r
  BOOLEAN   Status;\r
  EVP_PKEY  *Pkey;\r
  X509      *X509Cert;\r
\r
  //\r
  // ASSERT if Cert is NULL or RsaContext is NULL.\r
  //\r
  ASSERT (Cert       != NULL);\r
  ASSERT (RsaContext != NULL);\r
\r
  Status   = FALSE;\r
  Pkey     = NULL;\r
  X509Cert = NULL;\r
\r
  //\r
  // Read DER-encoded X509 Certificate and Construct X509 object.\r
  //\r
  Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
  if ((X509Cert == NULL) || (!Status)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Retrieve and check EVP_PKEY data from X509 Certificate.\r
  //\r
  Pkey = X509_get_pubkey (X509Cert);\r
  if ((Pkey == NULL) || (Pkey->type != EVP_PKEY_RSA)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Duplicate RSA Context from the retrieved EVP_PKEY.\r
  //\r
  if ((*RsaContext = RSAPublicKey_dup (Pkey->pkey.rsa)) != NULL) {\r
    Status = TRUE;\r
  }\r
\r
_Exit:\r
  //\r
  // Release Resources.\r
  //\r
  X509_free (X509Cert);\r
  EVP_PKEY_free (Pkey);\r
\r
  return Status;\r
}\r
\r
/**\r
  Verify one X509 certificate was issued by the trusted CA.\r
\r
  @param[in]      Cert         Pointer to the DER-encoded X509 certificate to be verified.\r
  @param[in]      CertSize     Size of the X509 certificate in bytes.\r
  @param[in]      CACert       Pointer to the DER-encoded trusted CA certificate.\r
  @param[in]      CACertSize   Size of the CA Certificate in bytes.\r
\r
  If Cert is NULL, then ASSERT().\r
  If CACert is NULL, then ASSERT().\r
\r
  @retval  TRUE   The certificate was issued by the trusted CA.\r
  @retval  FALSE  Invalid certificate or the certificate was not issued by the given\r
                  trusted CA.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
X509VerifyCert (\r
  IN  CONST UINT8  *Cert,\r
  IN  UINTN        CertSize,\r
  IN  CONST UINT8  *CACert,\r
  IN  UINTN        CACertSize\r
  )\r
{\r
  BOOLEAN         Status;\r
  X509            *X509Cert;\r
  X509            *X509CACert;\r
  X509_STORE      *CertStore;\r
  X509_STORE_CTX  CertCtx;\r
\r
  //\r
  // ASSERT if Cert is NULL or CACert is NULL.\r
  //\r
  ASSERT (Cert   != NULL);\r
  ASSERT (CACert != NULL);\r
\r
  Status     = FALSE;\r
  X509Cert   = NULL;\r
  X509CACert = NULL;\r
  CertStore  = NULL;\r
\r
  //\r
  // Register & Initialize necessary digest algorithms for certificate verification.\r
  //\r
  EVP_add_digest (EVP_md5());\r
  EVP_add_digest (EVP_sha1());\r
  EVP_add_digest (EVP_sha256());\r
\r
  //\r
  // Read DER-encoded certificate to be verified and Construct X509 object.\r
  //\r
  Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
  if ((X509Cert == NULL) || (!Status)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Read DER-encoded root certificate and Construct X509 object.\r
  //\r
  Status = X509ConstructCertificate (CACert, CACertSize, (UINT8 **) &X509CACert);\r
  if ((X509CACert == NULL) || (!Status)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Set up 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, X509CACert))) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // Set up X509_STORE_CTX for the subsequent verification operation.\r
  //\r
  if (!X509_STORE_CTX_init (&CertCtx, CertStore, X509Cert, NULL)) {\r
    goto _Exit;\r
  }\r
\r
  //\r
  // X509 Certificate Verification.\r
  //\r
  Status = (BOOLEAN) X509_verify_cert (&CertCtx);\r
\r
_Exit:\r
  //\r
  // Release Resources.\r
  //\r
  X509_free (X509Cert);\r
  X509_free (X509CACert);\r
  X509_STORE_free (CertStore);\r
  X509_STORE_CTX_cleanup (&CertCtx);\r
\r
  return Status;\r
}\r
Commit	Line	Data
4a567c96	1	/** @file\r
	2	X.509 Certificate Handler Wrapper Implementation over OpenSSL.\r
	3	\r
b7d320f8	4	Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r
4a567c96	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
	15	#include "InternalCryptLib.h"\r
	16	#include <openssl/x509.h>\r
	17	\r
b7d320f8	18	\r
	19	/**\r
	20	Construct a X509 object from DER-encoded certificate data.\r
	21	\r
	22	If Cert is NULL, then ASSERT().\r
	23	If SingleX509Cert is NULL, then ASSERT().\r
	24	\r
	25	@param[in] Cert Pointer to the DER-encoded certificate data.\r
	26	@param[in] CertSize The size of certificate data in bytes.\r
	27	@param[out] SingleX509Cert The generated X509 object.\r
	28	\r
	29	@retval TRUE The X509 object generation succeeded.\r
	30	@retval FALSE The operation failed.\r
	31	\r
	32	**/\r
	33	BOOLEAN\r
	34	EFIAPI\r
	35	X509ConstructCertificate (\r
	36	IN CONST UINT8 *Cert,\r
	37	IN UINTN CertSize,\r
	38	OUT UINT8 **SingleX509Cert\r
	39	)\r
	40	{\r
	41	BIO *CertBio;\r
	42	X509 *X509Cert;\r
	43	BOOLEAN Status;\r
	44	\r
	45	//\r
	46	// ASSERT if Cert is NULL or SingleX509Cert is NULL.\r
	47	//\r
	48	ASSERT (Cert != NULL);\r
	49	ASSERT (SingleX509Cert != NULL);\r
	50	\r
	51	Status = FALSE;\r
	52	\r
	53	//\r
	54	// Read DER-encoded X509 Certificate and Construct X509 object.\r
	55	//\r
	56	CertBio = BIO_new (BIO_s_mem ());\r
	57	BIO_write (CertBio, Cert, (int) CertSize);\r
	58	if (CertBio == NULL) {\r
	59	goto _Exit;\r
	60	}\r
	61	X509Cert = d2i_X509_bio (CertBio, NULL);\r
	62	if (X509Cert == NULL) {\r
	63	goto _Exit;\r
	64	}\r
	65	\r
	66	SingleX509Cert = (UINT8 ) X509Cert;\r
	67	Status = TRUE;\r
	68	\r
	69	_Exit:\r
	70	//\r
	71	// Release Resources.\r
	72	//\r
	73	BIO_free (CertBio);\r
	74	\r
	75	return Status;\r
	76	}\r
	77	\r
	78	/**\r
	79	Construct a X509 stack object from a list of DER-encoded certificate data.\r
	80	\r
	81	If X509Stack is NULL, then ASSERT().\r
82	\r
83	@param[in, out] X509Stack On input, pointer to an existing X509 stack object.\r
84	On output, pointer to the X509 stack object with new\r
85	inserted X509 certificate.\r
86	@param ... A list of DER-encoded single certificate data followed\r
87	by certificate size. A NULL terminates the list. The\r
88	pairs are the arguments to X509ConstructCertificate().\r
89	\r
90	@retval TRUE The X509 stack construction succeeded.\r
91	@retval FALSE The construction operation failed.\r
92	\r
93	**/\r
94	BOOLEAN\r
95	EFIAPI\r
96	X509ConstructCertificateStack (\r
97	IN OUT UINT8 **X509Stack,\r
98	... \r
99	)\r
100	{\r
101	UINT8 *Cert;\r
102	UINTN CertSize;\r
103	X509 *X509Cert;\r
104	STACK_OF(X509) *CertStack;\r
105	BOOLEAN Status;\r
106	VA_LIST Args;\r
107	UINTN Index;\r
108	\r
109	//\r
110	// ASSERT if input X509Stack is NULL.\r
111	//\r
112	ASSERT (X509Stack != NULL);\r
113	\r
114	Status = FALSE;\r
115	\r
116	//\r
117	// Initialize X509 stack object.\r
118	//\r
119	CertStack = (STACK_OF(X509) ) (X509Stack);\r
120	if (CertStack == NULL) {\r
121	CertStack = sk_X509_new_null ();\r
122	if (CertStack == NULL) {\r
123	return Status;\r
124	}\r
125	}\r
126	\r
127	VA_START (Args, X509Stack);\r
128	\r
129	for (Index = 0; ; Index++) {\r
130	//\r
131	// If Cert is NULL, then it is the end of the list.\r
132	//\r
133	Cert = VA_ARG (Args, UINT8 *);\r
134	if (Cert == NULL) {\r
135	break;\r
136	}\r
137	\r
138	CertSize = VA_ARG (Args, UINTN);\r
139	\r
140	//\r
141	// Construct X509 Object from the given DER-encoded certificate data.\r
142	//\r
143	Status = X509ConstructCertificate (\r
144	(CONST UINT8 *) Cert,\r
145	CertSize,\r
146	(UINT8 **) &X509Cert\r
147	);\r
148	if (!Status) {\r
149	X509_free (X509Cert);\r
150	break;\r
151	}\r
152	\r
153	//\r
154	// Insert the new X509 object into X509 stack object.\r
155	//\r
156	sk_X509_push (CertStack, X509Cert);\r
157	}\r
158	\r
159	VA_END (Args);\r
160	\r
161	if (!Status) {\r
162	sk_X509_pop_free (CertStack, X509_free);\r
163	} else {\r
164	X509Stack = (UINT8 ) CertStack;\r
165	}\r
166	\r
167	return Status;\r
168	}\r
169	\r
170	/**\r
171	Release the specified X509 object.\r
172	\r
173	If X509Cert is NULL, then ASSERT().\r
174	\r
175	@param[in] X509Cert Pointer to the X509 object to be released.\r
176	\r
177	**/\r
178	VOID\r
179	EFIAPI\r
180	X509Free (\r
181	IN VOID *X509Cert\r
182	)\r
183	{\r
184	ASSERT (X509Cert != NULL);\r
185	\r
186	//\r
187	// Free OpenSSL X509 object.\r
188	//\r
189	X509_free ((X509 *) X509Cert);\r
190	}\r
191	\r
192	/**\r
193	Release the specified X509 stack object.\r
194	\r
195	If X509Stack is NULL, then ASSERT().\r
196	\r
197	@param[in] X509Stack Pointer to the X509 stack object to be released.\r
198	\r
199	**/\r
200	VOID\r
201	EFIAPI\r
202	X509StackFree (\r
203	IN VOID *X509Stack\r
204	)\r
205	{\r
206	ASSERT (X509Stack != NULL);\r
207	\r
208	//\r
209	// Free OpenSSL X509 stack object.\r
210	//\r
211	sk_X509_pop_free ((STACK_OF(X509) *) X509Stack, X509_free);\r
212	}\r
213	\r
4a567c96	214	/**\r
	215	Retrieve the subject bytes from one X.509 certificate.\r
	216	\r
	217	@param[in] Cert Pointer to the DER-encoded X509 certificate.\r
	218	@param[in] CertSize Size of the X509 certificate in bytes.\r
	219	@param[out] CertSubject Pointer to the retrieved certificate subject bytes.\r
	220	@param[in, out] SubjectSize The size in bytes of the CertSubject buffer on input,\r
	221	and the size of buffer returned CertSubject on output.\r
	222	\r
	223	If Cert is NULL, then ASSERT().\r
	224	If SubjectSize is NULL, then ASSERT().\r
	225	\r
	226	@retval TRUE The certificate subject retrieved successfully.\r
	227	@retval FALSE Invalid certificate, or the SubjectSize is too small for the result.\r
	228	The SubjectSize will be updated with the required size.\r
	229	\r
	230	**/\r
	231	BOOLEAN\r
	232	EFIAPI\r
	233	X509GetSubjectName (\r
	234	IN CONST UINT8 *Cert,\r
	235	IN UINTN CertSize,\r
	236	OUT UINT8 *CertSubject,\r
	237	IN OUT UINTN *SubjectSize\r
	238	)\r
	239	{\r
	240	BOOLEAN Status;\r
4a567c96	241	X509 *X509Cert;\r
	242	X509_NAME *X509Name;\r
	243	\r
	244	//\r
	245	// ASSERT if Cert is NULL or SubjectSize is NULL.\r
	246	//\r
	247	ASSERT (Cert != NULL);\r
	248	ASSERT (SubjectSize != NULL);\r
	249	\r
	250	Status = FALSE;\r
	251	X509Cert = NULL;\r
	252	\r
	253	//\r
	254	// Read DER-encoded X509 Certificate and Construct X509 object.\r
	255	//\r
b7d320f8	256	Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
b7d320f8	257	if ((X509Cert == NULL) \|\| (!Status)) {\r
4a567c96	258	goto _Exit;\r
	259	}\r
	260	\r
	261	//\r
	262	// Retrieve subject name from certificate object.\r
	263	//\r
	264	X509Name = X509_get_subject_name (X509Cert);\r
	265	if (*SubjectSize < (UINTN) X509Name->bytes->length) {\r
	266	*SubjectSize = (UINTN) X509Name->bytes->length;\r
	267	goto _Exit;\r
	268	}\r
	269	*SubjectSize = (UINTN) X509Name->bytes->length;\r
	270	if (CertSubject != NULL) {\r
	271	CopyMem (CertSubject, (UINT8 )X509Name->bytes->data, SubjectSize);\r
	272	Status = TRUE;\r
	273	}\r
	274	\r
	275	_Exit:\r
	276	//\r
	277	// Release Resources.\r
	278	//\r
4a567c96	279	X509_free (X509Cert);\r
	280	\r
	281	return Status;\r
	282	}\r
	283	\r
	284	/**\r
	285	Retrieve the RSA Public Key from one DER-encoded X509 certificate.\r
	286	\r
	287	@param[in] Cert Pointer to the DER-encoded X509 certificate.\r
	288	@param[in] CertSize Size of the X509 certificate in bytes.\r
	289	@param[out] RsaContext Pointer to new-generated RSA context which contain the retrieved\r
	290	RSA public key component. Use RsaFree() function to free the\r
	291	resource.\r
	292	\r
	293	If Cert is NULL, then ASSERT().\r
	294	If RsaContext is NULL, then ASSERT().\r
	295	\r
	296	@retval TRUE RSA Public Key was retrieved successfully.\r
	297	@retval FALSE Fail to retrieve RSA public key from X509 certificate.\r
	298	\r
	299	**/\r
	300	BOOLEAN\r
	301	EFIAPI\r
	302	RsaGetPublicKeyFromX509 (\r
	303	IN CONST UINT8 *Cert,\r
	304	IN UINTN CertSize,\r
	305	OUT VOID **RsaContext\r
	306	)\r
	307	{\r
	308	BOOLEAN Status;\r
	309	EVP_PKEY *Pkey;\r
4a567c96	310	X509 *X509Cert;\r
	311	\r
	312	//\r
	313	// ASSERT if Cert is NULL or RsaContext is NULL.\r
	314	//\r
	315	ASSERT (Cert != NULL);\r
	316	ASSERT (RsaContext != NULL);\r
	317	\r
	318	Status = FALSE;\r
	319	Pkey = NULL;\r
4a567c96	320	X509Cert = NULL;\r
	321	\r
	322	//\r
	323	// Read DER-encoded X509 Certificate and Construct X509 object.\r
	324	//\r
b7d320f8	325	Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
b7d320f8	326	if ((X509Cert == NULL) \|\| (!Status)) {\r
4a567c96	327	goto _Exit;\r
	328	}\r
	329	\r
	330	//\r
	331	// Retrieve and check EVP_PKEY data from X509 Certificate.\r
	332	//\r
	333	Pkey = X509_get_pubkey (X509Cert);\r
	334	if ((Pkey == NULL) \|\| (Pkey->type != EVP_PKEY_RSA)) {\r
	335	goto _Exit;\r
	336	}\r
	337	\r
	338	//\r
	339	// Duplicate RSA Context from the retrieved EVP_PKEY.\r
	340	//\r
	341	if ((*RsaContext = RSAPublicKey_dup (Pkey->pkey.rsa)) != NULL) {\r
	342	Status = TRUE;\r
	343	}\r
	344	\r
	345	_Exit:\r
	346	//\r
	347	// Release Resources.\r
	348	//\r
4a567c96	349	X509_free (X509Cert);\r
	350	EVP_PKEY_free (Pkey);\r
	351	\r
	352	return Status;\r
	353	}\r
	354	\r
	355	/**\r
	356	Verify one X509 certificate was issued by the trusted CA.\r
	357	\r
	358	@param[in] Cert Pointer to the DER-encoded X509 certificate to be verified.\r
	359	@param[in] CertSize Size of the X509 certificate in bytes.\r
	360	@param[in] CACert Pointer to the DER-encoded trusted CA certificate.\r
	361	@param[in] CACertSize Size of the CA Certificate in bytes.\r
	362	\r
	363	If Cert is NULL, then ASSERT().\r
	364	If CACert is NULL, then ASSERT().\r
	365	\r
	366	@retval TRUE The certificate was issued by the trusted CA.\r
	367	@retval FALSE Invalid certificate or the certificate was not issued by the given\r
	368	trusted CA.\r
	369	\r
	370	**/\r
	371	BOOLEAN\r
	372	EFIAPI\r
	373	X509VerifyCert (\r
	374	IN CONST UINT8 *Cert,\r
	375	IN UINTN CertSize,\r
	376	IN CONST UINT8 *CACert,\r
	377	IN UINTN CACertSize\r
	378	)\r
	379	{\r
	380	BOOLEAN Status;\r
4a567c96	381	X509 *X509Cert;\r
	382	X509 *X509CACert;\r
	383	X509_STORE *CertStore;\r
	384	X509_STORE_CTX CertCtx;\r
	385	\r
	386	//\r
	387	// ASSERT if Cert is NULL or CACert is NULL.\r
	388	//\r
	389	ASSERT (Cert != NULL);\r
	390	ASSERT (CACert != NULL);\r
	391	\r
	392	Status = FALSE;\r
4a567c96	393	X509Cert = NULL;\r
	394	X509CACert = NULL;\r
	395	CertStore = NULL;\r
	396	\r
	397	//\r
	398	// Register & Initialize necessary digest algorithms for certificate verification.\r
	399	//\r
	400	EVP_add_digest (EVP_md5());\r
	401	EVP_add_digest (EVP_sha1());\r
	402	EVP_add_digest (EVP_sha256());\r
	403	\r
	404	//\r
	405	// Read DER-encoded certificate to be verified and Construct X509 object.\r
	406	//\r
b7d320f8	407	Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
b7d320f8	408	if ((X509Cert == NULL) \|\| (!Status)) {\r
4a567c96	409	goto _Exit;\r
	410	}\r
	411	\r
	412	//\r
	413	// Read DER-encoded root certificate and Construct X509 object.\r
	414	//\r
b7d320f8	415	Status = X509ConstructCertificate (CACert, CACertSize, (UINT8 **) &X509CACert);\r
b7d320f8	416	if ((X509CACert == NULL) \|\| (!Status)) {\r
4a567c96	417	goto _Exit;\r
	418	}\r
	419	\r
	420	//\r
	421	// Set up X509 Store for trusted certificate.\r
	422	//\r
	423	CertStore = X509_STORE_new ();\r
	424	if (CertStore == NULL) {\r
	425	goto _Exit;\r
	426	}\r
	427	if (!(X509_STORE_add_cert (CertStore, X509CACert))) {\r
	428	goto _Exit;\r
	429	}\r
	430	\r
	431	//\r
	432	// Set up X509_STORE_CTX for the subsequent verification operation.\r
	433	//\r
	434	if (!X509_STORE_CTX_init (&CertCtx, CertStore, X509Cert, NULL)) {\r
	435	goto _Exit;\r
	436	}\r
	437	\r
	438	//\r
	439	// X509 Certificate Verification.\r
	440	//\r
	441	Status = (BOOLEAN) X509_verify_cert (&CertCtx);\r
	442	\r
	443	_Exit:\r
	444	//\r
	445	// Release Resources.\r
	446	//\r
4a567c96	447	X509_free (X509Cert);\r
	448	X509_free (X509CACert);\r
	449	X509_STORE_free (CertStore);\r
	450	X509_STORE_CTX_cleanup (&CertCtx);\r
	451	\r
	452	return Status;\r
	453	}\r