Constructor Detail

• WinternitzOTSVerify

  public WinternitzOTSVerify​(Digest digest,
                             int w)

  The constructor

  Parameters:

  digest - the name of the hash function used by the OTS and the provider name of the hash function

  w - the Winternitz parameter

Method Detail

• getSignatureLength

  public int getSignatureLength()

  Returns:

  The length of the one-time signature

• Verify

  public byte[] Verify​(byte[] message,
                       byte[] signature)

  This method computes the public OTS key from the one-time signature of a message. This is *NOT* a complete OTS signature verification, but it suffices for usage with CMSS.

  Parameters:

  message - the message

  signature - the one-time signature

  Returns:

  The public OTS key

• getLog

  public int getLog​(int intValue)

  This method returns the least integer that is greater or equal to the logarithm to the base 2 of an integer intValue.

  Parameters:

  intValue - an integer

  Returns:

  The least integer greater or equal to the logarithm to the base 256 of intValue