(Ruby) Generate an Ed25519 Key Pair

Demonstrates how to generate a new Ed25519 public/private key pair.

Note: This example requires Chilkat v9.5.0.83 or greater.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

eddsa = Chilkat::CkEdDSA.new()
prng = Chilkat::CkPrng.new()
privKey = Chilkat::CkPrivateKey.new()

# Generates a new eddsa key and stores it in privKey.
success = eddsa.GenEd25519Key(prng,privKey)
if (success == false)
    print eddsa.lastErrorText() + "\n";
    exit
end

# Examine the ed25519 key in JWK format;
jwk = privKey.getJwk()

json = Chilkat::CkJsonObject.new()
json.Load(jwk)
json.put_EmitCompact(false)
print json.emit() + "\n";

# Sample output:
# {
#   "kty": "OKP",
#   "crv": "Ed25519",
#   "x": "SE2Kne5xt51z1eciMH2T2ftDQp96Gl6FhY6zSQujiP0",
#   "d": "O-eRXewadF0sNyB0U9omcnt8Qg2ZmeK3WSXPYgqe570",
#   "use": "sig"
# }

# In the above JWK, x is the public key, y is the private key.
# Both are 32 bytes and are base64-url encoded.