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<?php |
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/* |
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* This file is part of the LightSAML-Core package. |
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* |
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* (c) Milos Tomic <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace LightSaml\Credential; |
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use LightSaml\Error\LightSamlSecurityException; |
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use RobRichards\XMLSecLibs\XMLSecurityKey; |
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class KeyHelper |
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{ |
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/** |
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* @param string $key Key content or key filename |
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* @param string $passphrase Passphrase for the private key |
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* @param bool $isFile true if $key is a filename of the key |
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* @param string $type |
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* |
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* @return XMLSecurityKey |
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*/ |
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public static function createPrivateKey($key, $passphrase, $isFile = false, $type = XMLSecurityKey::RSA_SHA1) |
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{ |
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$result = new XMLSecurityKey($type, array('type' => 'private')); |
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$result->passphrase = $passphrase; |
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$result->loadKey($key, $isFile, false); |
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return $result; |
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} |
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/** |
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* @param X509Certificate $certificate |
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* |
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* @return XMLSecurityKey |
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*/ |
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public static function createPublicKey(X509Certificate $certificate) |
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{ |
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if (null == $certificate->getSignatureAlgorithm()) { |
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throw new LightSamlSecurityException('Unrecognized certificate signature algorithm'); |
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} |
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$key = new XMLSecurityKey($certificate->getSignatureAlgorithm(), array('type' => 'public')); |
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$key->loadKey($certificate->toPem(), false, true); |
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return $key; |
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} |
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/** |
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* @param XMLSecurityKey $key |
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* @param string $algorithm |
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* |
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* @throws \LightSaml\Error\LightSamlSecurityException |
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* @throws \InvalidArgumentException |
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* |
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* @return XMLSecurityKey |
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*/ |
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public static function castKey(XMLSecurityKey $key, $algorithm) |
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{ |
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if (false == is_string($algorithm)) { |
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throw new \InvalidArgumentException('Algorithm must be string'); |
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} |
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// do nothing if algorithm is already the type of the key |
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1 |
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if ($key->type === $algorithm) { |
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return $key; |
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} |
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$keyInfo = openssl_pkey_get_details($key->key); |
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if (false === $keyInfo) { |
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throw new LightSamlSecurityException('Unable to get key details from XMLSecurityKey.'); |
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} |
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if (false == isset($keyInfo['key'])) { |
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throw new LightSamlSecurityException('Missing key in public key details.'); |
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} |
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$newKey = new XMLSecurityKey($algorithm, array('type' => 'public')); |
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$newKey->loadKey($keyInfo['key']); |
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return $newKey; |
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} |
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} |
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thephplab /
lightsaml
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