SignedCms.CheckHash Method

Definition

The CheckHash() method verifies the data integrity of the CMS/PKCS #7 message. CheckHash() is a specialized method used in specific security infrastructure applications that only wish to check the hash of the CMS message, rather than perform a full digital signature verification. CheckHash() does not authenticate the author nor sender of the message because this method does not involve verifying a digital signature. For general-purpose checking of the integrity and authenticity of a CMS/PKCS #7 message, use the CheckSignature(Boolean) or CheckSignature(X509Certificate2Collection, Boolean) methods.

C#
public void CheckHash();

Exceptions

A method call was invalid for the object's current state.

Remarks

This method does not provide authentication of the CMS/PKCS #7 message.

Applies to

Product Versions
.NET 8 (package-provided), 9 (package-provided)
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7 (package-provided), 4.7, 4.7.1 (package-provided), 4.7.1, 4.7.2 (package-provided), 4.7.2, 4.8 (package-provided), 4.8, 4.8.1
.NET Standard 2.0 (package-provided), 2.1 (package-provided)
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also