(CkPython) RSASSA-PSS Algorithm with SHA256 Hashing

RSA encrypt a SHA256 hash with OAEP padding.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

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

privkey = chilkat.CkPrivateKey()

# Load the private key object from a PEM file.
# (To load from a PEM string, call LoadPem instead.)
success = privkey.LoadPemFile("somePath/myPrivateKey.pem")
if (success != True):
    print(privkey.lastErrorText())
    sys.exit()

rsa = chilkat.CkRsa()
# Use RSA-PSS by setting OaepPadding = True
rsa.put_OaepPadding(True)
# Use SHA256
rsa.put_OaepHash("SHA-256")

rsa.ImportPrivateKeyObj(privkey)

# Generate a base64 signature.
rsa.put_EncodingMode("base64")

sigStr = rsa.signStringENC("String to be signed","SHA-256")
if (rsa.get_LastMethodSuccess() != True):
    print(rsa.lastErrorText())
    sys.exit()

print("Signature: " + sigStr)