zmq_curve_public - derive the public key from a private key

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0MQ 4.3.5                                          03/31/2024                                ZMQ_CURVE_PUBLIC(3)

       The zmq_curve_public() function shall derive the public key from a private key. The caller provides two
       buffers, each at least 41 octets large. In z85_secret_key the caller shall provide the private key, and
       the function will store the public key in z85_public_key. The keys are encoded using zmq_z85_encode(3).

ENOTSUP
           The libzmq library was not built with cryptographic support (libsodium).

DerivingthepublickeyfromaCURVEprivatekey.

           char public_key [41];
           char secret_key [41];
           int rc = zmq_curve_keypair (public_key, secret_key);
           assert (rc == 0);
           char derived_public[41];
           rc = zmq_curve_public (derived_public, secret_key);
           assert (rc == 0);
           assert (!strcmp (derived_public, public_key));

       zmq_curve_public - derive the public key from a private key

       The zmq_curve_public() function shall return 0 if successful, else it shall return -1 and set errno to
       one of the values defined below.

zmq_z85_decode(3) zmq_z85_encode(3) zmq_curve_keypair(3) zmq_curve(7)

intzmq_curve_public(char*z85_public_key,char*z85_secret_key);