+/**\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
+/**\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
+/**\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
+/**\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
+/**\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