System.Security.Policy (mscorlib.dll)sealed class
public sealed class HashMembershipCondition : IMembershipCondition,       System.Security.ISecurityEncodable, System.Security.ISecurityPolicyEncodable { // Public Constructors    public HashMembershipCondition(System.Security.Cryptography.HashAlgorithm hashAlg, byte[  ] value); // Public Instance Properties    public HashAlgorithm HashAlgorithm{set; get; }    public byte[  ] HashValue{set; get; } // Public Instance Methods    public bool Check(Evidence evidence); // implements IMembershipCondition    public IMembershipCondition Copy(  );    // implements IMembershipCondition    public override bool Equals(object o);         // overrides object    public void FromXml(System.Security.SecurityElement e); // implements System.Security.ISecurityEncodable    public void FromXml(System.Security.SecurityElement e, PolicyLevel level);  // implements System.Security.ISecurityPolicyEncodable    public override int GetHashCode(  );     // overrides object    public override string ToString(  );     // overrides object    public SecurityElement ToXml(  );        // implements System.Security.ISecurityEncodable    public SecurityElement ToXml(PolicyLevel level);        // implements System.Security.ISecurityPolicyEncodable }

This membership condition class uses the value of Hash evidence to determine if an assembly or application domain qualifies for membership of a CodeGroup. The HashValue property contains the hash value required for membership, and the HashAlgorithm property contains a System.Security.Cryptography.HashAlgorithm object that implements the hash algorithm used to calculate the hash value.

When policy resolution calls the Check( ) method, if the provided Evidence collection contains a Hash object, the HashMembershipCondition object calls the Hash.GenerateHash( ) method and passes the System.Security.Cryptography.HashAlgorithm object from its HashAlgorithm property. If the returned hash value matches its HashValue property, then CodeGroup membership is granted.

Programming. NET Security
Programming .Net Security
ISBN: 0596004427
EAN: 2147483647
Year: 2005
Pages: 346

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