98 lines
2.3 KiB
PHP
98 lines
2.3 KiB
PHP
<?php
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/**
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* For the full copyright and license information, please view the
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* docs/licenses/LICENSE.txt file that was distributed with this source code.
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*/
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use Defuse\Crypto\Exception\EnvironmentIsBrokenException;
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/**
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* Class PhpEncryptionCore for openSSL 1.0.1+.
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*/
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class PhpEncryptionCore
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{
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public const ENGINE = 'PhpEncryptionEngine';
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private static $engine;
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/**
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* PhpEncryptionCore constructor.
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*
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* @param string $hexString A string that only contains hexadecimal characters
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* Bother upper and lower case are allowed
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*/
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public function __construct($hexString)
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{
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$engineClass = self::resolveEngineToUse();
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self::$engine = new $engineClass($hexString);
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}
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/**
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* Encrypt the plaintext.
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*
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* @param string $plaintext Plaintext
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*
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* @return string Cipher text
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*/
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public function encrypt($plaintext)
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{
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return self::$engine->encrypt($plaintext);
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}
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/**
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* Decrypt the cipher text.
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*
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* @param string $cipherText Cipher text
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*
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* @return bool|string Plaintext
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* `false` if unable to decrypt
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*
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* @throws Exception
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*/
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public function decrypt($cipherText)
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{
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return self::$engine->decrypt($cipherText);
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}
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/**
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* @param string $header
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* @param string $bytes
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*
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* @return string
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*
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* @throws EnvironmentIsBrokenException
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*/
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public static function saveBytesToChecksummedAsciiSafeString($header, $bytes)
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{
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$engine = self::resolveEngineToUse();
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return $engine::saveBytesToChecksummedAsciiSafeString($header, $bytes);
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}
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/**
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* @return string
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*
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* @throws Exception
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*/
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public static function createNewRandomKey()
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{
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$engine = self::resolveEngineToUse();
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try {
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$randomKey = $engine::createNewRandomKey();
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} catch (EnvironmentIsBrokenException $exception) {
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$buf = $engine::randomCompat();
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$randomKey = $engine::saveToAsciiSafeString($buf);
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}
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return $randomKey;
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}
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/**
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* Choose which engine use regarding the OpenSSL cipher methods available.
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*/
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public static function resolveEngineToUse()
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{
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return self::ENGINE;
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}
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}
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