CkPython

RSA Sign utf-8 Byte Representation of String

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Demontstrates how to sign the utf-8 byte representation of a string. 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.

# Load an RSA private key for signing.
privKey = chilkat.CkPrivateKey()
success = privKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem","passwd")
if (success == False):
    print(privKey.lastErrorText())
    sys.exit()

rsa = chilkat.CkRsa()
success = rsa.UsePrivateKey(privKey)
if (success == False):
    print(rsa.lastErrorText())
    sys.exit()

originalData = "This is the string to be hashed an RSA signed."

# Indicate that we want the utf-8 byte representation of the string to be signed
rsa.put_Charset("utf-8")

# We want the RSA signature in base64 format
rsa.put_EncodingMode("base64")

sigBase64 = rsa.signStringENC(originalData,"sha256")
print(sigBase64)