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(PHP ActiveX) Blowfish CFB Mode EncryptionDemonstrates how to encrypt using Blowfish CFB (Cipher Feedback) mode.
<?php // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2') $crypt = new COM("Chilkat.Crypt2"); // Use "blowfish2" to produce correct results that match published blowfish test vectors. $crypt->CryptAlgorithm = 'blowfish2'; $crypt->CipherMode = 'cfb'; $crypt->KeyLength = 256; // EncodingMode specifies the encoding of the output for // encryption, and the input for decryption. // It may be "hex", "url", "base64", "quoted-printable", or many other choices. $crypt->EncodingMode = 'hex'; // The block size of the blowfish algoirthm is 8 bytes, therefore the IV is 8 bytes. $ivHex = '0001020304050607'; $crypt->SetEncodedIV($ivHex,'hex'); // The secret key must equal the size of the key. For // 256-bit encryption, the binary secret key is 32 bytes. $keyHex = '603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4'; $crypt->SetEncodedKey($keyHex,'hex'); // Encrypt a string... $encStr = $crypt->encryptStringENC('In all intellectual debates, both sides tend to be correct in what they affirm, and wrong in what they deny. -- John Stuart Mill'); print $encStr . "\n"; // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2') $decrypt = new COM("Chilkat.Crypt2"); $decrypt->CryptAlgorithm = 'blowfish2'; $decrypt->CipherMode = 'cfb'; $decrypt->KeyLength = 256; $decrypt->EncodingMode = 'hex'; $decrypt->SetEncodedIV($ivHex,'hex'); $decrypt->SetEncodedKey($keyHex,'hex'); // Now decrypt: $decStr = $decrypt->decryptStringENC($encStr); print $decStr . "\n"; ?> |
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