CkPython

RSA Decrypt using PEM

See more RSA Examples

This example demonstrates decryping RSA encrypted data that is base64 encoded. It uses a private key loaded from a PEM file. 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()

key = chilkat.CkPrivateKey()

# Load an RSA private key from an unencrypted PEM file:
# (To load from an encrypted PEM file, call LoadEncryptedPemFile instead.)

success = key.LoadPemFile("qa_data/rsa/decryptTest/priv.pem")
if (success == False):
    print(key.lastErrorText())
    sys.exit()

# Make the key available to the RSA object
success = rsa.UsePrivateKey(key)
if (success == False):
    print(rsa.lastErrorText())
    sys.exit()

encryptedStr = "pP9XFJEsGgxPNHEgNiLB5H5ksCOXDk/G49BPTog1jKLAhYofV4UTH5k2TOYiqRnDnKs8+8uPoN/IxdiGXvuYG8HRzN0HtkhoZO/AxeyaB9S7eddCUlT0Pl2PEB2yQ9HG5rM7jqYOD6MAM4cuX7hqT8fa8tbzJzmBwdfFDBz94bwQjULHiO+gklIBC4vhkXT4yjuvEjxTAKU6tJeZYkBooJNdS/vE5RZRpuF6bGZU41Qc17qFR+iReBq+9f8IMmw8WR8fMbOCaygOfFS1nw7JVsIMGsAIXS8rUaJ/2DfGPfQx5HCiVtTOreGYRUI3esAQjnvUCnavZyQgs53nl7e2aA=="

rsa.put_EncodingMode("base64")

usePrivateKey = True
decryptedStr = rsa.decryptStringENC(encryptedStr,usePrivateKey)

print("Decrypted:")
print(decryptedStr)