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/**
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.oauth.jsontoken.crypto;
/**
* Enum of the signature algorithms supported by this package.
*/
public enum SignatureAlgorithm {
HS256("SHA256"),
HS1("SHA1"),
RS256("SHA256"),
RS1("SHA1");
private final String hashAlg;
private SignatureAlgorithm(String hashAlg) {
this.hashAlg = hashAlg;
}
/**
* What the signature algorithm is named in the "alg" parameter in a JSON Token's envelope.
*/
public String getNameForJson() {
return name();
}
/**
* Returns the hash algorithm that should be used when hashing data. When large pieces
* of data are to be included in a JSON Token's payload, it sometimes might make sense
* to include the hash of the data instead. If an issuer wants to do that, they should
* use this hash algorithm to hash the data.
*/
public String getHashAlgorithm() {
return hashAlg;
}
/**
* Given the name of the algorithm in the envelope, returns the corresponding enum instance.
*/
public static SignatureAlgorithm getFromJsonName(String name) {
return SignatureAlgorithm.valueOf(name);
}
}