The zmq_z85_encode() function shall encode the binary block specified by data and size into a string in dest. The size of the binary block must be divisible by 4. The dest must have sufficient space for size * 1.25 plus 1 for a null terminator. A 32-byte CURVE key is encoded as 40 ASCII characters plus a null terminator.
Encoding a CURVE key.
#include <sodium.h> uint8_t public_key ; uint8_t secret_key ; int rc = crypto_box_keypair (public_key, secret_key); assert (rc == 0); char encoded ; zmq_z85_encode (encoded, public_key, 32); puts (encoded);
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