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(PHP Extension) AES CFB Mode EncryptionDemonstrates how to encrypt using AES CFB (Cipher Feedback) mode.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $crypt = new CkCrypt2(); $crypt->put_CryptAlgorithm('aes'); $crypt->put_CipherMode('cfb'); $crypt->put_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->put_EncodingMode('hex'); $ivHex = '000102030405060708090A0B0C0D0E0F'; $crypt->SetEncodedIV($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('Good night, good night! parting is such sweet sorrow, That I shall say good night till it be morrow. -- William Shakespeare'); print $encStr . "\n"; $decrypt = new CkCrypt2(); $decrypt->put_CryptAlgorithm('aes'); $decrypt->put_CipherMode('cfb'); $decrypt->put_KeyLength(256); $decrypt->put_EncodingMode('hex'); $decrypt->SetEncodedIV($ivHex,'hex'); $decrypt->SetEncodedKey($keyHex,'hex'); // Now decrypt: $decStr = $decrypt->decryptStringENC($encStr); print $decStr . "\n"; ?> |
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