Chilkat2-Python

RSA Sign using Base64 Private Key

See more RSA Examples

Signs a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string. Chilkat2-Python

import sys
import chilkat2

success = False

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

privKey = chilkat2.PrivateKey()

sbPem = chilkat2.StringBuilder()
sbPem.AppendLine("-----BEGIN RSA PRIVATE KEY-----",True)
sbPem.AppendLine("MIIC .... j5A==",True)
sbPem.AppendLine("-----END RSA PRIVATE KEY-----",True)

success = privKey.LoadPem(sbPem.GetAsString())
if (success == False):
    print(privKey.LastErrorText)
    sys.exit()

rsa = chilkat2.Rsa()

success = rsa.UsePrivateKey(privKey)
if (success == False):
    print(rsa.LastErrorText)
    sys.exit()

bd = chilkat2.BinData()
bd.AppendString("12345678","utf-8")

success = rsa.SignRawBd(bd)
if (success == False):
    print(rsa.LastErrorText)
    sys.exit()

# Get the base64 RSA signature.
print(bd.GetEncoded("base64"))

success = rsa.VerifyRawBd(bd)
if (success == False):
    print(rsa.LastErrorText)
    sys.exit()

strOriginal = bd.GetString("utf-8")
print(strOriginal)