Class SM2Signer

    • Constructor Summary

      Constructors 
      Constructor Description
      SM2Signer()  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected java.math.BigInteger calculateE​(byte[] message)  
      protected ECMultiplier createBasePointMultiplier()  
      protected java.math.BigInteger[] derDecode​(byte[] encoding)  
      protected byte[] derEncode​(java.math.BigInteger r, java.math.BigInteger s)  
      byte[] generateSignature()
      generate a signature for the message we've been loaded with using the key we were initialised with.
      void init​(boolean forSigning, CipherParameters param)
      Initialise the signer for signing or verification.
      void reset()
      reset the internal state
      void update​(byte b)
      update the internal digest with the byte b
      void update​(byte[] in, int off, int len)
      update the internal digest with the byte array in
      boolean verifySignature​(byte[] signature)
      return true if the internal state represents the signature described in the passed in array.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • SM2Signer

        public SM2Signer()
    • Method Detail

      • init

        public void init​(boolean forSigning,
                         CipherParameters param)
        Description copied from interface: Signer
        Initialise the signer for signing or verification.
        Specified by:
        init in interface Signer
        Parameters:
        forSigning - true if for signing, false otherwise
        param - necessary parameters.
      • update

        public void update​(byte b)
        Description copied from interface: Signer
        update the internal digest with the byte b
        Specified by:
        update in interface Signer
      • update

        public void update​(byte[] in,
                           int off,
                           int len)
        Description copied from interface: Signer
        update the internal digest with the byte array in
        Specified by:
        update in interface Signer
      • verifySignature

        public boolean verifySignature​(byte[] signature)
        Description copied from interface: Signer
        return true if the internal state represents the signature described in the passed in array.
        Specified by:
        verifySignature in interface Signer
      • reset

        public void reset()
        Description copied from interface: Signer
        reset the internal state
        Specified by:
        reset in interface Signer
      • generateSignature

        public byte[] generateSignature()
                                 throws CryptoException
        Description copied from interface: Signer
        generate a signature for the message we've been loaded with using the key we were initialised with.
        Specified by:
        generateSignature in interface Signer
        Throws:
        CryptoException
      • createBasePointMultiplier

        protected ECMultiplier createBasePointMultiplier()
      • calculateE

        protected java.math.BigInteger calculateE​(byte[] message)
      • derDecode

        protected java.math.BigInteger[] derDecode​(byte[] encoding)
                                            throws java.io.IOException
        Throws:
        java.io.IOException
      • derEncode

        protected byte[] derEncode​(java.math.BigInteger r,
                                   java.math.BigInteger s)
                            throws java.io.IOException
        Throws:
        java.io.IOException