Package org.apache.harmony.security.x509

Class AlgorithmIdentifier

  • public final class AlgorithmIdentifier
extends Object
    The class encapsulates the ASN.1 DER encoding/decoding work with the Algorithm Identifier which is a part of X.509 certificate (as specified in RFC 3280 - Internet X.509 Public Key Infrastructure. Certificate and Certificate Revocation List (CRL) Profile. http://www.ietf.org/rfc/rfc3280.txt): 
      AlgorithmIdentifier ::= SEQUENCE {
      algorithm OBJECT IDENTIFIER,
      parameters ANY DEFINED BY algorithm OPTIONAL
  }

    • Field Detail

      • ASN1

        public static final ASN1Sequence ASN1
        Custom AlgorithmIdentifier DER encoder/decoder

    • Constructor Detail

      • AlgorithmIdentifier

        public AlgorithmIdentifier​(String algorithm)

      • AlgorithmIdentifier

        public AlgorithmIdentifier​(String algorithm,
                           byte[] parameters)

      • AlgorithmIdentifier

        public AlgorithmIdentifier​(String algorithm,
                           String algorithmName)
        For testing when algorithmName is not known, but algorithm OID is.

    • Method Detail

      • getAlgorithm

        public String getAlgorithm()
        Returns the value of algorithm field of the structure.

      • getAlgorithmName

        public String getAlgorithmName()
        Returns the name of the algorithm corresponding to its OID. If there is no the such correspondence, algorithm OID is returned.

      • getParameters

        public byte[] getParameters()
        Returns the value of parameters field of the structure.

      • getEncoded

        public byte[] getEncoded()
        Returns ASN.1 encoded form of this X.509 AlgorithmIdentifier value.

      • equals

        public boolean equals​(Object ai)
        Description copied from class: Object
        Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.

        The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.

        The general contract for the equals and Object.hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.

        Overrides:
        equals in class Object
        Parameters:
        ai - the object to compare this instance with.
        Returns:
        true if the specified object is equal to this Object; false otherwise.
        See Also:
        Object.hashCode()

      • hashCode

        public int hashCode()
        Description copied from class: Object
        Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

        Note that hash values must not change over time unless information used in equals comparisons also changes.

        See Writing a correct hashCode method if you intend implementing your own hashCode method.

        Overrides:
        hashCode in class Object
        Returns:
        this object's hash code.
        See Also:
        Object.equals(java.lang.Object)