diff options
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c')
-rw-r--r-- | CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c index 2e72f892cb..ac481f7e68 100644 --- a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7Verify.c @@ -219,6 +219,91 @@ WrapPkcs7Data ( }
/**
+ Pop single certificate from STACK_OF(X509).
+
+ If X509Stack, Cert, or CertSize is NULL, then return FALSE.
+
+ @param[in] X509Stack Pointer to a X509 stack object.
+ @param[out] Cert Pointer to a X509 certificate.
+ @param[out] CertSize Length of output X509 certificate in bytes.
+
+ @retval TRUE The X509 stack pop succeeded.
+ @retval FALSE The pop operation failed.
+
+**/
+BOOLEAN
+X509PopCertificate (
+ IN VOID *X509Stack,
+ OUT UINT8 **Cert,
+ OUT UINTN *CertSize
+ )
+{
+ BIO *CertBio;
+ X509 *X509Cert;
+ STACK_OF(X509) *CertStack;
+ BOOLEAN Status;
+ int Result;
+ int Length;
+ VOID *Buffer;
+
+ Status = FALSE;
+
+ if ((X509Stack == NULL) || (Cert == NULL) || (CertSize == NULL)) {
+ return Status;
+ }
+
+ CertStack = (STACK_OF(X509) *) X509Stack;
+
+ X509Cert = sk_X509_pop (CertStack);
+
+ if (X509Cert == NULL) {
+ return Status;
+ }
+
+ Buffer = NULL;
+
+ CertBio = BIO_new (BIO_s_mem ());
+ if (CertBio == NULL) {
+ return Status;
+ }
+
+ Result = i2d_X509_bio (CertBio, X509Cert);
+ if (Result == 0) {
+ goto _Exit;
+ }
+
+ Length = ((BUF_MEM *) CertBio->ptr)->length;
+ if (Length <= 0) {
+ goto _Exit;
+ }
+
+ Buffer = malloc (Length);
+ if (Buffer == NULL) {
+ goto _Exit;
+ }
+
+ Result = BIO_read (CertBio, Buffer, Length);
+ if (Result != Length) {
+ goto _Exit;
+ }
+
+ *Cert = Buffer;
+ *CertSize = Length;
+
+ Status = TRUE;
+
+_Exit:
+
+ BIO_free (CertBio);
+
+ if (!Status && (Buffer != NULL)) {
+ free (Buffer);
+ }
+
+ return Status;
+}
+
+/**
Get the signer's certificates from PKCS#7 signed data as described in "PKCS #7:
Cryptographic Message Syntax Standard". The input signed data could be wrapped
in a ContentInfo structure.
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