Visual C++ Examples

ChilkatHOMEASPVisual BasicVB.NETC#Visual C++CMFCDelphiFoxProJavaPerlPHPPythonRubySQL ServerVBScript

Visual C++ Examples

CkString
Byte Array
Bounced Mail
Character Encoding
Digital Certificates
Digital Signatures
Email
Encryption
FTP
HTML-to-XML
HTTP
IMAP
MHT / HTML Email
RSA Encryption
S/MIME
Socket
Spider
Tar
Upload
XML
XMP
Zip Compression


More Examples...
Email Object
POP3
SMTP
RSS
Atom
Self-Extractor

Unreleased...
Service
PPMD
Deflate
Bzip2
LZW
Bz2
DH Key Exchange
DSA
Icon

 

 

 

 

 

 

 

 

ARC4 Encryption (ARCFOUR)

Demonstrates simple ARC4 encryption to match some simple test vectors published by Wikipedia. ARC4 is a fast stream cipher supporting key lengths from 8 to 2048 bits (i.e. from 1 to 256 bytes). It is not a block cipher, so there is no padding, no modes, and no initialization vector.

Download Chilkat C++ Libraries for VC++ 8.0 / Win32

Download Chilkat C++ Libraries for VC++ 7.0 / Win32

Download Chilkat C++ Libraries for VC++ 6.0 / Win32

#include <CkCrypt2.h>
#include <CkString.h>

void ChilkatSample(void)
    {
    CkCrypt2 crypt;

    bool success;
    success = crypt.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("Crypt component unlock failed\n");
        return;
    }

    //  Set the encryption algorithm to ARC4:
    crypt.put_CryptAlgorithm("arc4");

    //  We want the encrypted output to be a hex-encoded string.
    crypt.put_EncodingMode("hex");

    //  Encrypt some test vectors from Wikipedia:

    CkString cipherText;
    CkString plainText;

    //  The key length (in bits) is equal to the number of us-ascii
    //  bytes in our key string * 8.

    // ARC4( "Key", "Plaintext" ) == BBF316E8D940AF0AD3
    crypt.put_KeyLength(24);
    crypt.SetEncodedKey("Key","ascii");
    cipherText = crypt.encryptStringENC("Plaintext");
    printf("%s\n",(const char *)cipherText);
    plainText = crypt.decryptStringENC(cipherText);
    printf("%s\n",(const char *)plainText);

    // ARC4( "Wiki", "pedia" ) == 1021BF0420
    crypt.put_KeyLength(32);
    crypt.SetEncodedKey("Wiki","ascii");
    cipherText = crypt.encryptStringENC("pedia");
    printf("%s\n",(const char *)cipherText);
    plainText = crypt.decryptStringENC(cipherText);
    printf("%s\n",(const char *)plainText);

    // ARC4( "Secret", "Attack at dawn" ) == 45A01F645FC35B383552544B9BF5
    crypt.put_KeyLength(48);
    crypt.SetEncodedKey("Secret","ascii");
    cipherText = crypt.encryptStringENC("Attack at dawn");
    printf("%s\n",(const char *)cipherText);
    plainText = crypt.decryptStringENC(cipherText);
    printf("%s\n",(const char *)plainText);

    //  Note: The call to SetEncodedKey serves to set the key
    //  to the us-ascii bytes of the string.

    }

Need a specific example? Send a request to support@chilkatsoft.com

© 2000-2008 Chilkat Software, Inc. All Rights Reserved.

Mail Component · .NET Mail Component · XML Parser