ed25519_sign/4

Documentation
- Reference manual
- Packages
  - SWI-Prolog SSL Interface
    - library(crypto): Cryptography and authentication library
      - Digital signatures
        
        Ed25519
        
        ed25519_new_keypair/1
        
        ed25519_seed_keypair/2
        
        ed25519_keypair_public_key/2
        
        ed25519_sign/4
        
        ed25519_verify/4

Availability::- use_module(library(crypto)).(can be autoloaded)

[det]ed25519_sign(+KeyPair, +Data, -Signature, +Options)

Create an Ed25519 (RFC 8032) signature for Data with the private key of KeyPair, as created by ed25519_new_keypair/1 or obtained with load_private_key/3. Signature is a hexadecimal atom.

Options:

encoding(+Encoding): Encoding to use for Data. Default is utf8. Alternatives are octet, text and hex. Note that this differs from ecdsa_sign/4 and rsa_sign/4, which default to hex because they are typically applied to a hash of the data. Ed25519 signs the data itself.

History

Introduced in 10.1.12 (👉8100e85) #156 Ed25519 signatures and X25519 key exchange