(CkPython) Generate a Random 256-bit AES Key and RSA Encrypt

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Generates a random 256-bit AES key and encrypts using an RSA public key. Only the owner of the RSA private key will be able to decrypt the AES key.

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import sys
import chilkat

# The RSA public key is used for encryption, and the private key for decryption.

# The public key's role is to make encryption accessible to anyone while ensuring that
# only the private key holder can decrypt the messages.
# The public key is designed to be widely distributed so anyone can use it to encrypt messages
# intended for the owner of the private key.

# Load our 2048-bit RSA public key.
pubKey = chilkat.CkPublicKey()
# In all Chilkat methods expecting a path, you pass either absolute or relative paths.
success = pubKey.LoadFromFile("rsaKeys/Test2048Rsa.pem")
if (success == False):
    print(pubKey.lastErrorText())
    sys.exit()

rsa = chilkat.CkRsa()

# Tell RSA to use the public key.
rsa.ImportPublicKeyObj(pubKey)

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

# RSA encrypt.
rsa.EncryptBd(bdAesKey,False)

# Save the RSA encrypted AES key to a file.
success = bdAesKey.WriteFile("rsaEncrypted/myAes.key")