![]() |
Chilkat HOME Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi DLL Go Java Node.js Objective-C PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Chilkat2-Python) RSA Encrypt RSA/ECB/OAEPWithSHA1AndMGF1PaddingDemonstrates how to RSA encrypt using RSA/ECB/OAEPWithSHA1AndMGF1Padding. Also demonstrates RSA/ECB/OAEPWithSHA-256AndMGF1Padding. Both of these terms are from Java's JCE. Note: In this context, "ECB" doesn't actually mean anything. It's a symmetric cipher mode that doesn't apply (or make sense) in this context. Note: This example requires Chilkat v11.0.0 or greater.
import sys import chilkat2 success = False # This example assumes the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. rsa = chilkat2.Rsa() # First load a public key object with a public key. # In this case, we'll load it from a file. pubkey = chilkat2.PublicKey() success = pubkey.LoadFromFile("qa_data/pem/rsa_public.pem") if (success == False): print(pubkey.LastErrorText) sys.exit() # RSA encryption is limited to small amounts of data. The limit # is typically a few hundred bytes and is based on the key size and # padding (OAEP vs. PKCS1_5). RSA encryption is typically used for # encrypting hashes or symmetric (bulk encryption algorithm) secret keys. plainText = "Time is an illusion. Lunchtime doubly so." # Import the public key to be used for encrypting. success = rsa.UsePublicKey(pubkey) # To get OAEP padding, set the PkcsPadding property equal to False rsa.PkcsPadding = False rsa.OaepHash = "sha256" # Indicate we'll want hex output rsa.EncodingMode = "hex" # Encrypt.. usePrivateKey = False encryptedStr = rsa.EncryptStringENC(plainText,usePrivateKey) print(encryptedStr) # ------------------------------------------------- # Now decrypt with the matching private key. rsa2 = chilkat2.Rsa() privKey = chilkat2.PrivateKey() success = privKey.LoadEncryptedPem("qa_data/pem/rsa_passwd.pem","passwd") if (success == False): print(privKey.LastErrorText) sys.exit() success = rsa2.UsePrivateKey(privKey) # Make sure we have the same settings used for encryption. rsa2.PkcsPadding = False rsa2.EncodingMode = "hex" rsa2.OaepHash = "sha256" originalStr = rsa2.DecryptStringENC(encryptedStr,True) print(originalStr) |
© 2000-2025 Chilkat Software, Inc. All Rights Reserved.