/** @file\r
X.509 Certificate Handler Wrapper Implementation over OpenSSL.\r
\r
-Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2010 - 2015, 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
OUT UINT8 **SingleX509Cert\r
)\r
{\r
- BIO *CertBio;\r
- X509 *X509Cert;\r
- BOOLEAN Status;\r
+ X509 *X509Cert;\r
+ CONST UINT8 *Temp;\r
\r
//\r
// Check input parameters.\r
return FALSE;\r
}\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
+ Temp = Cert;\r
+ X509Cert = d2i_X509 (NULL, &Temp, (long) CertSize);\r
if (X509Cert == NULL) {\r
- goto _Exit;\r
+ return FALSE;\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
+ return TRUE;\r
}\r
\r
/**\r
\r
If X509Stack is NULL, then return FALSE.\r
\r
- @param[in, out] X509Stack On input, pointer to an existing X509 stack object.\r
+ @param[in, out] X509Stack On input, pointer to an existing or NULL 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
}\r
\r
CertSize = VA_ARG (Args, UINTN);\r
+ if (CertSize == 0) {\r
+ break;\r
+ }\r
\r
//\r
// Construct X509 Object from the given DER-encoded certificate data.\r
//\r
+ X509Cert = NULL;\r
Status = X509ConstructCertificate (\r
(CONST UINT8 *) Cert,\r
CertSize,\r
(UINT8 **) &X509Cert\r
);\r
if (!Status) {\r
- X509_free (X509Cert);\r
+ if (X509Cert != NULL) {\r
+ X509_free (X509Cert);\r
+ }\r
break;\r
}\r
\r
return FALSE;\r
}\r
\r
- Status = FALSE;\r
X509Cert = NULL;\r
\r
//\r
//\r
Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
if ((X509Cert == NULL) || (!Status)) {\r
+ Status = FALSE;\r
goto _Exit;\r
}\r
\r
+ Status = FALSE;\r
+\r
//\r
// Retrieve subject name from certificate object.\r
//\r
X509Name = X509_get_subject_name (X509Cert);\r
+ if (X509Name == NULL) {\r
+ goto _Exit;\r
+ }\r
+\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
+ CopyMem (CertSubject, (UINT8 *) X509Name->bytes->data, *SubjectSize);\r
Status = TRUE;\r
}\r
\r
//\r
// Release Resources.\r
//\r
- X509_free (X509Cert);\r
+ if (X509Cert != NULL) {\r
+ X509_free (X509Cert);\r
+ }\r
\r
return Status;\r
}\r
return FALSE;\r
}\r
\r
- Status = FALSE;\r
Pkey = NULL;\r
X509Cert = NULL;\r
\r
//\r
Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
if ((X509Cert == NULL) || (!Status)) {\r
+ Status = FALSE;\r
goto _Exit;\r
}\r
\r
+ Status = FALSE;\r
+\r
//\r
// Retrieve and check EVP_PKEY data from X509 Certificate.\r
//\r
//\r
// Release Resources.\r
//\r
- X509_free (X509Cert);\r
- EVP_PKEY_free (Pkey);\r
+ if (X509Cert != NULL) {\r
+ X509_free (X509Cert);\r
+ }\r
+\r
+ if (Pkey != NULL) {\r
+ EVP_PKEY_free (Pkey);\r
+ } \r
\r
return Status;\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
+ 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
//\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
+ Status = FALSE;\r
goto _Exit;\r
}\r
\r
//\r
Status = X509ConstructCertificate (CACert, CACertSize, (UINT8 **) &X509CACert);\r
if ((X509CACert == NULL) || (!Status)) {\r
+ Status = FALSE;\r
goto _Exit;\r
}\r
\r
+ Status = FALSE;\r
+\r
//\r
// Set up X509 Store for trusted certificate.\r
//\r
//\r
// Release Resources.\r
//\r
- X509_free (X509Cert);\r
- X509_free (X509CACert);\r
- X509_STORE_free (CertStore);\r
+ if (X509Cert != NULL) {\r
+ X509_free (X509Cert);\r
+ }\r
\r
+ if (X509CACert != NULL) {\r
+ X509_free (X509CACert);\r
+ }\r
+\r
+ if (CertStore != NULL) {\r
+ X509_STORE_free (CertStore);\r
+ }\r
+ \r
return Status;\r
}\r
+\r
+/**\r
+ Retrieve the TBSCertificate from one given X.509 certificate.\r
+\r
+ @param[in] Cert Pointer to the given DER-encoded X509 certificate.\r
+ @param[in] CertSize Size of the X509 certificate in bytes.\r
+ @param[out] TBSCert DER-Encoded To-Be-Signed certificate.\r
+ @param[out] TBSCertSize Size of the TBS certificate in bytes.\r
+\r
+ If Cert is NULL, then return FALSE.\r
+ If TBSCert is NULL, then return FALSE.\r
+ If TBSCertSize is NULL, then return FALSE.\r
+\r
+ @retval TRUE The TBSCertificate was retrieved successfully.\r
+ @retval FALSE Invalid X.509 certificate.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+X509GetTBSCert (\r
+ IN CONST UINT8 *Cert,\r
+ IN UINTN CertSize,\r
+ OUT UINT8 **TBSCert,\r
+ OUT UINTN *TBSCertSize\r
+ )\r
+{\r
+ CONST UINT8 *Temp;\r
+ INTN Asn1Tag;\r
+ INTN ObjClass;\r
+ UINTN Length;\r
+\r
+ //\r
+ // Check input parameters.\r
+ //\r
+ if ((Cert == NULL) || (TBSCert == NULL) ||\r
+ (TBSCertSize == NULL) || (CertSize > INT_MAX)) {\r
+ return FALSE;\r
+ }\r
+\r
+ //\r
+ // An X.509 Certificate is: (defined in RFC3280)\r
+ // Certificate ::= SEQUENCE {\r
+ // tbsCertificate TBSCertificate,\r
+ // signatureAlgorithm AlgorithmIdentifier,\r
+ // signature BIT STRING }\r
+ //\r
+ // and\r
+ //\r
+ // TBSCertificate ::= SEQUENCE {\r
+ // version [0] Version DEFAULT v1,\r
+ // ...\r
+ // }\r
+ //\r
+ // So we can just ASN1-parse the x.509 DER-encoded data. If we strip\r
+ // the first SEQUENCE, the second SEQUENCE is the TBSCertificate.\r
+ //\r
+ Temp = Cert;\r
+ ASN1_get_object (&Temp, (long *)&Length, (int *)&Asn1Tag, (int *)&ObjClass, (long)CertSize);\r
+\r
+ if (Asn1Tag != V_ASN1_SEQUENCE) {\r
+ return FALSE;\r
+ }\r
+\r
+ *TBSCert = (UINT8 *)Temp;\r
+\r
+ ASN1_get_object (&Temp, (long *)&Length, (int *)&Asn1Tag, (int *)&ObjClass, (long)Length);\r
+ //\r
+ // Verify the parsed TBSCertificate is one correct SEQUENCE data.\r
+ //\r
+ if (Asn1Tag != V_ASN1_SEQUENCE) {\r
+ return FALSE;\r
+ }\r
+\r
+ *TBSCertSize = Length + (Temp - *TBSCert);\r
+ \r
+ return TRUE;\r
+}\r
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