Chilkat HOME Android™ Classic ASP C C++ C# Mono C# .NET Core C# C# UWP/WinRT DataFlex Delphi ActiveX Delphi DLL Visual FoxPro Java Lianja MFC Objective-C Perl PHP ActiveX PHP Extension PowerBuilder PowerShell PureBasic CkPython Chilkat2-Python Ruby SQL Server Swift 2 Swift 3/4 Tcl Unicode C Unicode C++ Visual Basic 6.0 VB.NET VB.NET UWP/WinRT VBScript Xojo Plugin Node.js Excel Go
(Python) ARC4 Encryption (ARCFOUR)ARC4 (ARCFOUR) encryption. The Chilkat encryption component supports the ARC4 streaming encryption algorithm.
import sys import chilkat crypt = chilkat.CkCrypt2() success = crypt.UnlockComponent("Anything for 30-day trial") if (success != True): print("Crypt component unlock failed") sys.exit() # Set the encryption algorithm = "arc4" crypt.put_CryptAlgorithm("arc4") # KeyLength may range from 1 byte to 256 bytes. # (i.e. 8 bits to 2048 bits) # ARC4 key sizes are typically in the range of # 40 to 128 bits. # The KeyLength property is specified in bits: crypt.put_KeyLength(128) # Note: The PaddingScheme and CipherMode properties # do not apply w/ ARC4. ARC4 does not encrypt in blocks -- # it is a streaming encryption algorithm. The number of output bytes # is exactly equal to the number of input bytes. # EncodingMode specifies the encoding of the output for # encryption, and the input for decryption. # It may be "hex", "url", "base64", or "quoted-printable". crypt.put_EncodingMode("hex") # Note: ARC4 does not utilize initialization vectors. IV's only # apply to block encryption algorithms. # The secret key must equal the size of the key. # For 128-bit encryption, the binary secret key is 16 bytes. keyHex = "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F" crypt.SetEncodedKey(keyHex,"hex") # Encrypt a string... # The output length is exactly equal to the input. In this # example, the input string is 44 chars (ANSI bytes) so the # output is 44 bytes -- and when hex encoded results in an # 88-char string (2 chars per byte for the hex encoding). encStr = crypt.encryptStringENC("The quick brown fox jumps over the lazy dog.") print(encStr) # Now decrypt: decStr = crypt.decryptStringENC(encStr) print(decStr) |
© 2000-2016 Chilkat Software, Inc. All Rights Reserved.