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<?php |
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namespace Btccom\JustEncrypt; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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use BitWasp\Buffertools\Parser; |
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class Encryption |
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{ |
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const TAGLEN_BITS = 128; |
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const IVLEN_BYTES = 16; |
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/** |
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* @param BufferInterface $plainText |
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* @param BufferInterface $passphrase |
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* @param int $iterations |
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* @return EncryptedBlob |
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*/ |
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public static function encrypt(BufferInterface $plainText, BufferInterface $passphrase, $iterations = KeyDerivation::DEFAULT_ITERATIONS) |
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{ |
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$salt = KeyDerivation::generateSalt(); |
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$iv = new Buffer(random_bytes(self::IVLEN_BYTES)); |
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return self::encryptWithSaltAndIV($plainText, $passphrase, $salt, $iv, $iterations); |
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} |
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/** |
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* @param BufferInterface $plainText |
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* @param BufferInterface $password |
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* @param BufferInterface $salt |
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* @param BufferInterface $iv |
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* @param int $iterations |
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* @return EncryptedBlob |
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*/ |
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public static function encryptWithSaltAndIV(BufferInterface $plainText, BufferInterface $password, BufferInterface $salt, BufferInterface $iv, $iterations) |
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{ |
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$header = new HeaderBlob($salt->getSize(), $salt, $iterations); |
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$blob = $header->encrypt($plainText, $password, $iv); |
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return $blob; |
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} |
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/** |
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* @param BufferInterface $cipherText |
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* @param BufferInterface $password |
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* @return BufferInterface |
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*/ |
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public static function decrypt(BufferInterface $cipherText, BufferInterface $password) |
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{ |
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return EncryptedBlob::fromParser(new Parser($cipherText))->decrypt($password); |
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} |
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} |
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btccom /
justencrypt-php
