Package org.bouncycastle.crypto.signers

Class StandardDSAEncoding

  • All Implemented Interfaces:
    DSAEncoding
    public class StandardDSAEncoding
extends java.lang.Object
implements DSAEncoding

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected java.math.BigInteger checkValue​(java.math.BigInteger n, java.math.BigInteger x)  
      java.math.BigInteger[] decode​(java.math.BigInteger n, byte[] encoding)
      Decode the (r, s) pair of a DSA signature.
      protected java.math.BigInteger decodeValue​(java.math.BigInteger n, ASN1Sequence s, int pos)  
      byte[] encode​(java.math.BigInteger n, java.math.BigInteger r, java.math.BigInteger s)
      Encode the (r, s) pair of a DSA signature.
      protected void encodeValue​(java.math.BigInteger n, ASN1EncodableVector v, java.math.BigInteger x)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • StandardDSAEncoding

        public StandardDSAEncoding()

    • Method Detail

      • encode

        public byte[] encode​(java.math.BigInteger n,
                     java.math.BigInteger r,
                     java.math.BigInteger s)
              throws java.io.IOException
        Description copied from interface: DSAEncoding
        Encode the (r, s) pair of a DSA signature.
        Specified by:
        encode in interface DSAEncoding
        Parameters:
        n - the order of the group that r, s belong to.
        r - the r value of a DSA signature.
        s - the s value of a DSA signature.
        Returns:
        an encoding of the DSA signature given by the provided (r, s) pair.
        Throws:
        java.io.IOException

      • decode

        public java.math.BigInteger[] decode​(java.math.BigInteger n,
                                     byte[] encoding)
                              throws java.io.IOException
        Description copied from interface: DSAEncoding
        Decode the (r, s) pair of a DSA signature.
        Specified by:
        decode in interface DSAEncoding
        Parameters:
        n - the order of the group that r, s belong to.
        encoding - an encoding of the (r, s) pair of a DSA signature.
        Returns:
        the (r, s) of a DSA signature, stored in an array of exactly two elements, r followed by s.
        Throws:
        java.io.IOException

      • checkValue

        protected java.math.BigInteger checkValue​(java.math.BigInteger n,
                                          java.math.BigInteger x)

      • decodeValue

        protected java.math.BigInteger decodeValue​(java.math.BigInteger n,
                                           ASN1Sequence s,
                                           int pos)

      • encodeValue

        protected void encodeValue​(java.math.BigInteger n,
                           ASN1EncodableVector v,
                           java.math.BigInteger x)