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<?php |
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namespace Iron; |
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use InvalidArgumentException as Iae; |
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/** |
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* @param mixed $data |
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* @param string|PasswordInterface $password |
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* @param integer $ttl |
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* @param string $cipherMethod |
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* |
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* @return string |
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*/ |
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function seal( |
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$data, |
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$password, |
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int $ttl = 0, |
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string $cipherMethod = Iron::DEFAULT_ENCRYPTION_METHOD |
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) { |
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return (string) (new Iron($cipherMethod)) |
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->encrypt( |
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normalize_password($password), |
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json_encode($data), |
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$ttl |
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); |
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} |
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/** |
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* @param string $sealed |
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* @param string|PasswordInterface $password |
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* @param string $cipherMethod |
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* @param callable $keyProvider |
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* @param callable $saltGenerator |
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* |
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* @return mixed |
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*/ |
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function unseal( |
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string $sealed, |
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$password, |
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string $cipherMethod = Iron::DEFAULT_ENCRYPTION_METHOD, |
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callable $keyProvider = null, |
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callable $saltGenerator = null |
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) { |
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$password = normalize_password($password); |
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$token = Token::fromSealed( |
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$password, |
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$sealed, |
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true, |
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$keyProvider ?: default_key_provider(), |
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$saltGenerator ?: default_salt_generator() |
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); |
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$json = (new Iron($cipherMethod)) |
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->decryptToken($token, $password); |
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return json_decode($json, true); |
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} |
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function base64_encode(string $binary): string |
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{ |
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return rtrim(strtr(\base64_encode($binary), [ |
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'+' => '-', |
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'/' => '_', |
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]), '='); |
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} |
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function base64_decode(string $data): string |
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{ |
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return \base64_decode(strtr($data, [ |
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'-' => '+', |
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'_' => '/', |
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])); |
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} |
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function default_key_provider(): callable |
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{ |
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return __NAMESPACE__ . '\\generate_key'; |
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} |
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/** |
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* @param PasswordInterface $p |
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* @param string $salt |
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* @param int $length |
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* @param int $iterations |
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* |
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* @return bool|string |
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*/ |
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function generate_key( |
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PasswordInterface $p, |
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string $salt, |
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int $length = 32, |
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int $iterations = 1 |
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): string { |
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return hash_pbkdf2( |
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'sha1', |
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$p->getPassword(), |
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$salt, |
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$iterations, |
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$length, |
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true |
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); |
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} |
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function default_salt_generator(): callable |
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{ |
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return __NAMESPACE__ . '\\generate_salt'; |
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} |
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function generate_salt(int $length = 32): string |
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{ |
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return bin2hex(random_bytes($length)); |
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} |
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/** |
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* @param string|PasswordInterface $password |
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* |
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* @throws Iae |
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* |
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* @return PasswordInterface |
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*/ |
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function normalize_password($password): PasswordInterface |
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{ |
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if (is_string($password)) { |
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return new Password($password); |
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} |
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if ($password instanceof PasswordInterface) { |
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return $password; |
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} |
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throw new Iae('Passwords must be strings or instances of' |
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. ' Iron\\PasswordInterface'); |
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} |
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jeskew /
iron-php
