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These functions allow you to easily encrypt and decrypt text using the mcrypt PHP extension (required) and the Blowfish encryption algorithm.
| <?php
function Encrypt_Helper($string, $key)
{
if (extension_loaded('mcrypt') === true)
{
return base64_encode(mcrypt_encrypt(MCRYPT_BLOWFISH, substr($key, 0, mcrypt_get_key_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB)), trim($string), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB), MCRYPT_RAND)));
}
return false;
}
function Decrypt_Helper($string, $key)
{
if (extension_loaded('mcrypt') === true)
{
return trim(mcrypt_decrypt(MCRYPT_BLOWFISH, substr($key, 0, mcrypt_get_key_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB)), base64_decode($string), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB), MCRYPT_RAND)));
}
return false;
}
?> | |
Usage example
| <?php
// returns "K9e+8tesCIziQfNH1QFAsQ=="
echo Encrypt_Helper('top secret info', 'this is the password');
// returns "top secret info"
echo Decrypt_Helper('K9e+8tesCIziQfNH1QFAsQ==', 'this is the password');
?> | |
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| A PHP function to encrypt and decrypt a number or string or a combination of the two.
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