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(PHP ActiveX) AES CFB Mode EncryptionDemonstrates how to encrypt using AES CFB (Cipher Feedback) mode.
<?php // This example requires 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"); $crypt->CryptAlgorithm = 'aes'; $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'; $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"; // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2') $decrypt = new COM("Chilkat.Crypt2"); $decrypt->CryptAlgorithm = 'aes'; $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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