(Chilkat2-Python) Create PKCS1 RSA Signature with PEM Private Key

See more RSA Examples

Note: This example requires Chilkat v11.0.0 or greater.

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import sys
import chilkat2

success = False

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

pkey = chilkat2.PrivateKey()

# Load the private key from an RSA PEM file:
success = pkey.LoadPemFile("pvkey2_rsa.pem")
if (success == False):
    print(pkey.LastErrorText)
    sys.exit()

rsa = chilkat2.Rsa()

# Import the private key into the RSA object:
success = rsa.UsePrivateKey(pkey)
if (success == False):
    print(rsa.LastErrorText)
    sys.exit()

# Get the signature as hex.
rsa.EncodingMode = "hex"

strData = "This is the string to be signed."

# Sign the string using the sha-1 hash algorithm.
# Other valid choices are "md2", "md5", "sha256",
# "sha384", and "sha512".
hexSig = rsa.SignStringENC(strData,"sha-1")

print(hexSig)

print("Success!")