(Chilkat2-Python) RSASSA-PSS Algorithm with SHA256 Hashing

RSA encrypt a SHA256 hash with OAEP padding.

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

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS

import sys
import chilkat2

success = False

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

privkey = chilkat2.PrivateKey()

# 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 == False):
    print(privkey.LastErrorText)
    sys.exit()

rsa = chilkat2.Rsa()
# Use RSA-PSS by setting OaepPadding = True
rsa.OaepPadding = True
# Use SHA256
rsa.OaepHash = "SHA-256"

rsa.UsePrivateKey(privkey)

# Generate a base64 signature.
rsa.EncodingMode = "base64"

sigStr = rsa.SignStringENC("String to be signed","SHA-256")
if (rsa.LastMethodSuccess == False):
    print(rsa.LastErrorText)
    sys.exit()

print("Signature: " + sigStr)