minssl
Software
www.skarnet.org

The kcdsa224-sign program

kcdsa224-sign computes a digital signature with the EC-KCDSA algorithm on the NIST-approved P-224 elliptic curve. You can check the kcdsa224 library page for links to papers detailing this algorithm.

Interface

     kcdsa224-sign < message > signature

• kcdsa224-sign reads a private key from the file specified by the MINSSL_PRIVKEYFILE environment variable. It complains and exits if the variable is not set.
• It reads a public key from the file specified by the MINSSL_PUBKEYFILE environment variable. If the variable is not set, the public key is recomputed from the private key.
• It reads a complete message on stdin, until stdin closes.
• It then computes and writes a digital signature of the message on stdout.