Package org.bouncycastle.crypto.signers

Interface DSAEncoding

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.math.BigInteger[] decode​(java.math.BigInteger n, byte[] encoding)
      Decode the (r, s) pair of a DSA signature.
      byte[] encode​(java.math.BigInteger n, java.math.BigInteger r, java.math.BigInteger s)
      Encode the (r, s) pair of a DSA signature.

    • Method Detail

      • decode

        java.math.BigInteger[] decode​(java.math.BigInteger n,
                              byte[] encoding)
                       throws java.io.IOException
        Decode the (r, s) pair of a DSA signature.
        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

      • encode

        byte[] encode​(java.math.BigInteger n,
              java.math.BigInteger r,
              java.math.BigInteger s)
       throws java.io.IOException
        Encode the (r, s) pair of a DSA signature.
        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