CryptXmlVerifySignature function (cryptxml.h)

The CryptXmlVerifySignature function performs a cryptographic signature validation of a SignedInfo element.


HRESULT CryptXmlVerifySignature(
  [in]           HCRYPTXML         hSignature,
  [in, optional] BCRYPT_KEY_HANDLE hKey,
                 DWORD             dwFlags


[in] hSignature

The handle of a Signature element.

[in, optional] hKey

The handle of the public key to use to verify the signature value on the SignedInfo element. This parameter must be NULL for HMAC-based signature algorithms.


A DWORD value that controls which implementations are used. This parameter can be one of the following values.

Value Meaning
Only default implementations for the signature and digest are used. When this flag is set, no other registered extensions are loaded.

Return value

If the function succeeds, the function returns zero.

If the function fails, it returns an HRESULT value that indicates the error.


Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Target Platform Windows
Header cryptxml.h
Library Cryptxml.lib
DLL Cryptxml.dll