CkPython

RSA Encrypt Randomly Generated AES Key

See more RSA Examples

Demonstrates how to RSA encrypt a randomly generated AES key. CkPython

import sys
import chilkat

success = False

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

# First generate a 256-bit AES key (32 bytes).
prng = chilkat.CkPrng()
bdAesKey = chilkat.CkBinData()
success = prng.GenRandomBd(32,bdAesKey)

# Use a public key from a certificate for RSA encryption.
cert = chilkat.CkCert()

success = cert.LoadFromFile("qa_data/pem/mf_public_rsa.pem")
if (success == False):
    print(cert.lastErrorText())
    sys.exit()

pubKey = chilkat.CkPublicKey()
cert.GetPublicKey(pubKey)

rsa = chilkat.CkRsa()
success = rsa.UsePublicKey(pubKey)
if (success == False):
    print(rsa.lastErrorText())
    sys.exit()

# RSA encrypt our 32-byte AES key.
# The contents of bdAesKey are replaced with result of the RSA encryption.
success = rsa.EncryptBd(bdAesKey,False)
if (success == False):
    print(rsa.lastErrorText())
    sys.exit()

# Return the result as a base64 string
encryptedAesKey = bdAesKey.getEncoded("base64")

print("encrypted AES key = " + encryptedAesKey)