CkPython

Generate an RSA Key and Get as Base64 DER

See more RSA Examples

Demonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER. CkPython

import sys
import chilkat

success = False

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

rsa = chilkat.CkRsa()

# Generate a 2048-bit key.
privKey = chilkat.CkPrivateKey()
success = rsa.GenKey(2048,privKey)
if (success == False):
    print(rsa.lastErrorText())
    sys.exit()

# Get the public part of the key.
pubKey = chilkat.CkPublicKey()
privKey.ToPublicKey(pubKey)

# There are two possible formats for representing the RSA public key 
# in ASN.1 (DER).  The possible formats are PKCS1 and PKCS8.
# We can get either by setting bChoosePkcs1 to True or False.
bChoosePkcs1 = True
pubKeyBase64Der = pubKey.getEncoded(bChoosePkcs1,"base64")
print("Public Key Base64 DER:")
print(pubKeyBase64Der)

# Get the private key as Base64 DER:
# We can get PKCS1 or PKCS8, but with different methods:
privKeyPkcs1 = privKey.getPkcs1ENC("base64")
print("Private Key PKCS1 Base64 DER:")
print(privKeyPkcs1)

privKeyPkcs8 = privKey.getPkcs8ENC("base64")
print("Private Key PKCS8 Base64 DER:")
print(privKeyPkcs8)