[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
  ASSERT (CertSize       <= INT_MAX);\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
  X509_STORE_CTX_cleanup (&CertCtx);\r
\r
_Exit:\r
  //\r
  // Release Resources.\r
  //\r
  X509_free (X509Cert);\r
  X509_free (X509CACert);\r
  X509_STORE_free (CertStore);\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
d3945da6	48	ASSERT (Cert != NULL);\r
b7d320f8	49	ASSERT (SingleX509Cert != NULL);\r
d3945da6	50	ASSERT (CertSize <= INT_MAX);\r
da9e7418	51	\r
b7d320f8	52	Status = FALSE;\r
	53	\r
	54	//\r
	55	// Read DER-encoded X509 Certificate and Construct X509 object.\r
	56	//\r
	57	CertBio = BIO_new (BIO_s_mem ());\r
	58	BIO_write (CertBio, Cert, (int) CertSize);\r
	59	if (CertBio == NULL) {\r
	60	goto _Exit;\r
	61	}\r
	62	X509Cert = d2i_X509_bio (CertBio, NULL);\r
	63	if (X509Cert == NULL) {\r
	64	goto _Exit;\r
	65	}\r
	66	\r
	67	SingleX509Cert = (UINT8 ) X509Cert;\r
	68	Status = TRUE;\r
	69	\r
	70	_Exit:\r
	71	//\r
	72	// Release Resources.\r
	73	//\r
	74	BIO_free (CertBio);\r
	75	\r
	76	return Status;\r
	77	}\r
	78	\r
	79	/**\r
	80	Construct a X509 stack object from a list of DER-encoded certificate data.\r
	81	\r
	82	If X509Stack is NULL, then ASSERT().\r
	83	\r
	84	@param[in, out] X509Stack On input, pointer to an existing X509 stack object.\r
	85	On output, pointer to the X509 stack object with new\r
	86	inserted X509 certificate.\r
	87	@param ... A list of DER-encoded single certificate data followed\r
	88	by certificate size. A NULL terminates the list. The\r
	89	pairs are the arguments to X509ConstructCertificate().\r
	90	\r
	91	@retval TRUE The X509 stack construction succeeded.\r
	92	@retval FALSE The construction operation failed.\r
	93	\r
	94	**/\r
	95	BOOLEAN\r
	96	EFIAPI\r
	97	X509ConstructCertificateStack (\r
	98	IN OUT UINT8 **X509Stack,\r
	99	... \r
	100	)\r
	101	{\r
	102	UINT8 *Cert;\r
	103	UINTN CertSize;\r
	104	X509 *X509Cert;\r
	105	STACK_OF(X509) *CertStack;\r
	106	BOOLEAN Status;\r
	107	VA_LIST Args;\r
	108	UINTN Index;\r
	109	\r
	110	//\r
	111	// ASSERT if input X509Stack is NULL.\r
	112	//\r
	113	ASSERT (X509Stack != NULL);\r
	114	\r
	115	Status = FALSE;\r
116	\r
117	//\r
118	// Initialize X509 stack object.\r
119	//\r
120	CertStack = (STACK_OF(X509) ) (X509Stack);\r
121	if (CertStack == NULL) {\r
122	CertStack = sk_X509_new_null ();\r
123	if (CertStack == NULL) {\r
124	return Status;\r
125	}\r
126	}\r
127	\r
128	VA_START (Args, X509Stack);\r
129	\r
130	for (Index = 0; ; Index++) {\r
131	//\r
132	// If Cert is NULL, then it is the end of the list.\r
133	//\r
134	Cert = VA_ARG (Args, UINT8 *);\r
135	if (Cert == NULL) {\r
136	break;\r
137	}\r
138	\r
139	CertSize = VA_ARG (Args, UINTN);\r
140	\r
141	//\r
142	// Construct X509 Object from the given DER-encoded certificate data.\r
143	//\r
144	Status = X509ConstructCertificate (\r
145	(CONST UINT8 *) Cert,\r
146	CertSize,\r
147	(UINT8 **) &X509Cert\r
148	);\r
149	if (!Status) {\r
150	X509_free (X509Cert);\r
151	break;\r
152	}\r
153	\r
154	//\r
155	// Insert the new X509 object into X509 stack object.\r
156	//\r
157	sk_X509_push (CertStack, X509Cert);\r
158	}\r
159	\r
160	VA_END (Args);\r
161	\r
162	if (!Status) {\r
163	sk_X509_pop_free (CertStack, X509_free);\r
164	} else {\r
165	X509Stack = (UINT8 ) CertStack;\r
166	}\r
167	\r
168	return Status;\r
169	}\r
170	\r
171	/**\r
172	Release the specified X509 object.\r
173	\r
174	If X509Cert is NULL, then ASSERT().\r
175	\r
176	@param[in] X509Cert Pointer to the X509 object to be released.\r
177	\r
178	**/\r
179	VOID\r
180	EFIAPI\r
181	X509Free (\r
182	IN VOID *X509Cert\r
183	)\r
184	{\r
185	ASSERT (X509Cert != NULL);\r
186	\r
187	//\r
188	// Free OpenSSL X509 object.\r
189	//\r
190	X509_free ((X509 *) X509Cert);\r
191	}\r
192	\r
193	/**\r
194	Release the specified X509 stack object.\r
195	\r
196	If X509Stack is NULL, then ASSERT().\r
197	\r
198	@param[in] X509Stack Pointer to the X509 stack object to be released.\r
199	\r
200	**/\r
201	VOID\r
202	EFIAPI\r
203	X509StackFree (\r
204	IN VOID *X509Stack\r
205	)\r
206	{\r
207	ASSERT (X509Stack != NULL);\r
208	\r
209	//\r
210	// Free OpenSSL X509 stack object.\r
211	//\r
212	sk_X509_pop_free ((STACK_OF(X509) *) X509Stack, X509_free);\r
213	}\r
214	\r
4a567c96	215	/**\r
	216	Retrieve the subject bytes from one X.509 certificate.\r
	217	\r
	218	@param[in] Cert Pointer to the DER-encoded X509 certificate.\r
	219	@param[in] CertSize Size of the X509 certificate in bytes.\r
	220	@param[out] CertSubject Pointer to the retrieved certificate subject bytes.\r
	221	@param[in, out] SubjectSize The size in bytes of the CertSubject buffer on input,\r
	222	and the size of buffer returned CertSubject on output.\r
	223	\r
	224	If Cert is NULL, then ASSERT().\r
	225	If SubjectSize is NULL, then ASSERT().\r
	226	\r
	227	@retval TRUE The certificate subject retrieved successfully.\r
	228	@retval FALSE Invalid certificate, or the SubjectSize is too small for the result.\r
	229	The SubjectSize will be updated with the required size.\r
	230	\r
	231	**/\r
	232	BOOLEAN\r
	233	EFIAPI\r
	234	X509GetSubjectName (\r
	235	IN CONST UINT8 *Cert,\r
	236	IN UINTN CertSize,\r
	237	OUT UINT8 *CertSubject,\r
	238	IN OUT UINTN *SubjectSize\r
	239	)\r
	240	{\r
	241	BOOLEAN Status;\r
4a567c96	242	X509 *X509Cert;\r
	243	X509_NAME *X509Name;\r
	244	\r
	245	//\r
	246	// ASSERT if Cert is NULL or SubjectSize is NULL.\r
	247	//\r
	248	ASSERT (Cert != NULL);\r
	249	ASSERT (SubjectSize != NULL);\r
	250	\r
	251	Status = FALSE;\r
	252	X509Cert = NULL;\r
	253	\r
	254	//\r
	255	// Read DER-encoded X509 Certificate and Construct X509 object.\r
	256	//\r
b7d320f8	257	Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
b7d320f8	258	if ((X509Cert == NULL) \|\| (!Status)) {\r
4a567c96	259	goto _Exit;\r
	260	}\r
	261	\r
	262	//\r
	263	// Retrieve subject name from certificate object.\r
	264	//\r
	265	X509Name = X509_get_subject_name (X509Cert);\r
	266	if (*SubjectSize < (UINTN) X509Name->bytes->length) {\r
	267	*SubjectSize = (UINTN) X509Name->bytes->length;\r
	268	goto _Exit;\r
	269	}\r
	270	*SubjectSize = (UINTN) X509Name->bytes->length;\r
	271	if (CertSubject != NULL) {\r
	272	CopyMem (CertSubject, (UINT8 )X509Name->bytes->data, SubjectSize);\r
	273	Status = TRUE;\r
	274	}\r
	275	\r
	276	_Exit:\r
	277	//\r
	278	// Release Resources.\r
	279	//\r
4a567c96	280	X509_free (X509Cert);\r
	281	\r
	282	return Status;\r
	283	}\r
	284	\r
	285	/**\r
	286	Retrieve the RSA Public Key from one DER-encoded X509 certificate.\r
	287	\r
	288	@param[in] Cert Pointer to the DER-encoded X509 certificate.\r
	289	@param[in] CertSize Size of the X509 certificate in bytes.\r
	290	@param[out] RsaContext Pointer to new-generated RSA context which contain the retrieved\r
	291	RSA public key component. Use RsaFree() function to free the\r
	292	resource.\r
	293	\r
	294	If Cert is NULL, then ASSERT().\r
	295	If RsaContext is NULL, then ASSERT().\r
	296	\r
	297	@retval TRUE RSA Public Key was retrieved successfully.\r
	298	@retval FALSE Fail to retrieve RSA public key from X509 certificate.\r
	299	\r
	300	**/\r
	301	BOOLEAN\r
	302	EFIAPI\r
	303	RsaGetPublicKeyFromX509 (\r
	304	IN CONST UINT8 *Cert,\r
	305	IN UINTN CertSize,\r
	306	OUT VOID **RsaContext\r
	307	)\r
	308	{\r
	309	BOOLEAN Status;\r
	310	EVP_PKEY *Pkey;\r
4a567c96	311	X509 *X509Cert;\r
	312	\r
	313	//\r
	314	// ASSERT if Cert is NULL or RsaContext is NULL.\r
	315	//\r
	316	ASSERT (Cert != NULL);\r
	317	ASSERT (RsaContext != NULL);\r
	318	\r
	319	Status = FALSE;\r
	320	Pkey = NULL;\r
4a567c96	321	X509Cert = NULL;\r
	322	\r
	323	//\r
	324	// Read DER-encoded X509 Certificate and Construct X509 object.\r
	325	//\r
b7d320f8	326	Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
b7d320f8	327	if ((X509Cert == NULL) \|\| (!Status)) {\r
4a567c96	328	goto _Exit;\r
	329	}\r
	330	\r
	331	//\r
	332	// Retrieve and check EVP_PKEY data from X509 Certificate.\r
	333	//\r
	334	Pkey = X509_get_pubkey (X509Cert);\r
	335	if ((Pkey == NULL) \|\| (Pkey->type != EVP_PKEY_RSA)) {\r
	336	goto _Exit;\r
	337	}\r
	338	\r
	339	//\r
	340	// Duplicate RSA Context from the retrieved EVP_PKEY.\r
	341	//\r
	342	if ((*RsaContext = RSAPublicKey_dup (Pkey->pkey.rsa)) != NULL) {\r
	343	Status = TRUE;\r
	344	}\r
	345	\r
	346	_Exit:\r
	347	//\r
	348	// Release Resources.\r
	349	//\r
4a567c96	350	X509_free (X509Cert);\r
	351	EVP_PKEY_free (Pkey);\r
	352	\r
	353	return Status;\r
	354	}\r
	355	\r
	356	/**\r
	357	Verify one X509 certificate was issued by the trusted CA.\r
	358	\r
	359	@param[in] Cert Pointer to the DER-encoded X509 certificate to be verified.\r
	360	@param[in] CertSize Size of the X509 certificate in bytes.\r
	361	@param[in] CACert Pointer to the DER-encoded trusted CA certificate.\r
	362	@param[in] CACertSize Size of the CA Certificate in bytes.\r
	363	\r
	364	If Cert is NULL, then ASSERT().\r
	365	If CACert is NULL, then ASSERT().\r
	366	\r
	367	@retval TRUE The certificate was issued by the trusted CA.\r
	368	@retval FALSE Invalid certificate or the certificate was not issued by the given\r
	369	trusted CA.\r
	370	\r
	371	**/\r
	372	BOOLEAN\r
	373	EFIAPI\r
	374	X509VerifyCert (\r
	375	IN CONST UINT8 *Cert,\r
	376	IN UINTN CertSize,\r
	377	IN CONST UINT8 *CACert,\r
	378	IN UINTN CACertSize\r
	379	)\r
	380	{\r
	381	BOOLEAN Status;\r
4a567c96	382	X509 *X509Cert;\r
	383	X509 *X509CACert;\r
	384	X509_STORE *CertStore;\r
	385	X509_STORE_CTX CertCtx;\r
	386	\r
	387	//\r
	388	// ASSERT if Cert is NULL or CACert is NULL.\r
	389	//\r
	390	ASSERT (Cert != NULL);\r
	391	ASSERT (CACert != NULL);\r
	392	\r
	393	Status = FALSE;\r
4a567c96	394	X509Cert = NULL;\r
	395	X509CACert = NULL;\r
	396	CertStore = NULL;\r
	397	\r
	398	//\r
	399	// Register & Initialize necessary digest algorithms for certificate verification.\r
	400	//\r
	401	EVP_add_digest (EVP_md5());\r
	402	EVP_add_digest (EVP_sha1());\r
	403	EVP_add_digest (EVP_sha256());\r
	404	\r
	405	//\r
	406	// Read DER-encoded certificate to be verified and Construct X509 object.\r
	407	//\r
b7d320f8	408	Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
b7d320f8	409	if ((X509Cert == NULL) \|\| (!Status)) {\r
4a567c96	410	goto _Exit;\r
	411	}\r
	412	\r
	413	//\r
	414	// Read DER-encoded root certificate and Construct X509 object.\r
	415	//\r
b7d320f8	416	Status = X509ConstructCertificate (CACert, CACertSize, (UINT8 **) &X509CACert);\r
b7d320f8	417	if ((X509CACert == NULL) \|\| (!Status)) {\r
4a567c96	418	goto _Exit;\r
	419	}\r
	420	\r
	421	//\r
	422	// Set up X509 Store for trusted certificate.\r
	423	//\r
	424	CertStore = X509_STORE_new ();\r
	425	if (CertStore == NULL) {\r
	426	goto _Exit;\r
	427	}\r
	428	if (!(X509_STORE_add_cert (CertStore, X509CACert))) {\r
	429	goto _Exit;\r
	430	}\r
	431	\r
	432	//\r
	433	// Set up X509_STORE_CTX for the subsequent verification operation.\r
	434	//\r
	435	if (!X509_STORE_CTX_init (&CertCtx, CertStore, X509Cert, NULL)) {\r
	436	goto _Exit;\r
	437	}\r
	438	\r
	439	//\r
	440	// X509 Certificate Verification.\r
	441	//\r
	442	Status = (BOOLEAN) X509_verify_cert (&CertCtx);\r
da9e7418	443	X509_STORE_CTX_cleanup (&CertCtx);\r
4a567c96	444	\r
	445	_Exit:\r
	446	//\r
	447	// Release Resources.\r
	448	//\r
4a567c96	449	X509_free (X509Cert);\r
	450	X509_free (X509CACert);\r
	451	X509_STORE_free (CertStore);\r
4a567c96	452	\r
	453	return Status;\r
	454	}\r