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<?php
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
class BlobCrypterException extends Exception { }
/**
* Utility interface for managing signed, encrypted, and time stamped blobs.
* Blobs are made up of name/value pairs. Time stamps are automatically
* included and checked.
*
*/
abstract class BlobCrypter {
/**
* Time stamps, encrypts, and signs a blob.
*
* @param in name/value pairs to encrypt
* @return a base64 encoded blob
*
* @throws BlobCrypterException
*/
abstract public function wrap(Array $in);
/**
* Unwraps a blob.
*
* @param in blob
* @param maxAgeSec maximum age for the blob
* @return the name/value pairs, including the origin timestamp.
*
* @throws BlobExpiredException if the blob is too old to be accepted.
* @throws BlobCrypterException if the blob can't be decoded.
*/
abstract public function unwrap($in, $maxAgeSec);
}
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