System.Security.Cryptography.X509Certificates.X509SubjectKeyIdentifierHashAlgorithm Enumeration

Defines the type of hash algorithm to use with the System.Security.Cryptography.X509Certificates.X509SubjectKeyIdentifierExtension class.

Syntax

public enum X509SubjectKeyIdentifierHashAlgorithm

Remarks

The subject key identifier (SKI) provides a unique identification for a certificate's subject when working with XML digital signing. An SKI is an SHA-1 hash of the subject's public key information.

Use the System.Security.Cryptography.X509Certificates.X509SubjectKeyIdentifierHashAlgorithm enumeration to define the type of hash algorithm to use with the System.Security.Cryptography.X509Certificates.X509SubjectKeyIdentifierExtension class when creating an SKI.

Members

Member NameDescription
CapiSha1

The subject key identifier (SKI) is composed of a 160-bit SHA-1 hash of the encoded public key (including the tag, length, and number of unused bits).

Sha1

The SKI is composed of the 160-bit SHA-1 hash of the value of the public key (excluding the tag, length, and number of unused bits).

ShortSha1

The SKI is composed of a four-bit type field with the value 0100, followed by the least significant 60 bits of the SHA-1 hash of the value of the public key (excluding the tag, length, and number of unused bit string bits)

Requirements

Namespace: System.Security.Cryptography.X509Certificates
Assembly: System (in System.dll)
Assembly Versions: 2.0.0.0, 4.0.0.0
Since: .NET 2.0