package com.atlassian.asap.api;
   
   import static com.atlassian.asap.api.AlgorithmType.ECDSA;
   import static com.atlassian.asap.api.AlgorithmType.RSA;
   import static com.atlassian.asap.api.AlgorithmType.RSASSA_PSS;
   
   /**
    * An enumeration of asymmetric JWS algorithms. Values must match the names used in the JWT 'alg' header. Valid values
    * are specified by <a href="https://tools.ietf.org/html/rfc7518">JSON Web Algorithms</a>.
   */
  public enum SigningAlgorithm {
      RS256(RSA, 256), RS384(RSA, 384), RS512(RSA, 512),
      ES256(ECDSA, 256), ES384(ECDSA, 384), ES512(ECDSA, 512),
      PS256(RSASSA_PSS, 256), PS384(RSASSA_PSS, 384), PS512(RSASSA_PSS, 512);
      // Do NOT add here symmetric JWS algorithms (like HS256) because the security of the ASAP protocol depends on the
      // use of asymmetric keys, which allow the key used for signing the token to remain a secret.
  
      private final AlgorithmType type;
      private final int hashSize;
  
      SigningAlgorithm(AlgorithmType type, int hashSize) {
          this.type = type;
          this.hashSize = hashSize;
      }
  
      public AlgorithmType type() {
          return type;
      }
  
      public int hashSize() {
          return hashSize;
      }
  }