public DerivedKeySecurityToken(string id, string algorithm,
SecurityKeyIdentifierClause reference,
SymmetricSecurityKey referencedKey,
string name,
int?generation,
int?offset,
int?length,
string label,
byte [] nonce)
{
algorithm = algorithm ?? SecurityAlgorithms.Psha1KeyDerivation;
this.id = id;
this.algorithm = algorithm;
this.reference = reference;
this.generation = generation;
this.offset = offset;
this.length = length;
this.nonce = nonce;
this.name = name;
this.label = label;
SecurityKey key = new InMemorySymmetricSecurityKey(
referencedKey.GenerateDerivedKey(
algorithm,
Encoding.UTF8.GetBytes(label ?? Constants.WsscDefaultLabel),
nonce,
(length ?? 32) * 8,
offset ?? 0));
keys = new ReadOnlyCollection <SecurityKey> (
new SecurityKey [] { key });
}
public override byte[] GenerateDerivedKey(string algorithm, byte[] label, byte[] nonce, int derivedKeyLength, int offset)
{
return(_key.GenerateDerivedKey(algorithm, label, nonce, derivedKeyLength, offset));
}