(Ruby) Generate an ECC Key (Public and Private)

See more ECC Examples

Note: This example requires Chilkat v11.0.0 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 requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# Create a Fortuna PRNG and seed it with system entropy.
# This will be our source of random data for generating the ECC private key.
fortuna = Chilkat::CkPrng.new()
entropy = fortuna.getEntropy(32,"base64")
success = fortuna.AddEntropy(entropy,"base64")

ecc = Chilkat::CkEcc.new()

# Generate a random ECC private key on the secp256r1 curve.
# Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

privKey = Chilkat::CkPrivateKey.new()
success = ecc.GenKey("secp256r1",fortuna,privKey)
if (success == false)
    print ecc.lastErrorText() + "\n";
    exit
end

# Save the private key to PKCS8 encrypted PEM
# (The private key can be saved in a variety of different formats. See the online reference documentation.)
success = privKey.SavePkcs8EncryptedPemFile("pemPassword","qa_output/eccPrivKey.pem")
if (success != true)
    print privKey.lastErrorText() + "\n";
end

# The private key PEM looks like this:

# 	-----BEGIN ENCRYPTED PRIVATE KEY-----
# 	MIHFMEAGCSqGSIb3DQEFDTAzMBsGCSqGSIb3DQEFDDAOBAhUmn+1/lwCIwICCAAw
# 	FAYIKoZIhvcNAwcECPlyNXAXZO+oBIGAIvxvTENXJWbrCwSjh0QNxLecBotUpfI5
# 	auOonLmwVMyt1ahMmNyVo/D+pnKQSE41Fg8fApM0DCDKZUOVCCcK1qirIsMPQkGp
# 	klPJbvrQRVYgzBtU31uNB5y2wqhrIeepal1HXBvbkUK0nfJMbcdz/XAEIQu2HhTD
# 	t6LMScPQld4=
# 	-----END ENCRYPTED PRIVATE KEY-----

# Now get the public key part from the private key.
# (A public key is actually a subset of the private key.)
pubKey = Chilkat::CkPublicKey.new()
privKey.ToPublicKey(pubKey)

# Save the public key to a PEM file.
# (The public key can be saved in a variety of different formats. See the online reference documentation.)
# For ECC keys, the 1st argument (bPreferPkcs1) is ignored and unused.
bPreferPkcs1 = false
success = pubKey.SavePemFile(bPreferPkcs1,"qa_output/eccPubKey.pem")

# The public key PEM looks like this:

# 	-----BEGIN PUBLIC KEY-----
# 	MIIBSzCCAQMGByqGSM49AgEwgfcCAQEwLAYHKoZIzj0BAQIhAP////8AAAABAAAA
# 	AAAAAAAAAAAA////////////////MFsEIP////8AAAABAAAAAAAAAAAAAAAA////
# 	///////////8BCBaxjXYqjqT57PrvVV2mIa8ZR0GsMxTsPY7zjw+J9JgSwMVAMSd
# 	NgiG5wSTamZ44ROdJreBn36QBEEEaxfR8uEsQkf4vOblY6RA8ncDfYEt6zOg9KE5
# 	RdiYwpZP40Li/hp/m47n60p8D54WK84zV2sxXs7LtkBoN79R9QIhAP////8AAAAA
# 	//////////+85vqtpxeehPO5ysL8YyVRAgEBA0IABGdOH8uM6SfX3mdV+TR0mWp2
# 	gfVRPlxWxwhOiowuNByBxmQz7ZR4CJY1XcN2zkUo5pzW73ZhGwgd2XTOvqPqG40=
# 	-----END PUBLIC KEY-----
# 

print "finished." + "\n";