mhash is a library that provides a uniform interface to a large number of hash algorithms. These algorithms can be used to compute checksums, message digests, and other signatures. HMAC (Hashing for Message AuthentiCation) support implements the basics for message authentication, following RFC 2104. Later versions have added some key-generation algorithms, which use hash algorithms. mhash supports these algorithms: SHA1, GOST, HAVAL, MD5, RIPEMD160, TIGER, and CRC32 checksums. To add support for mhash in PHP, use the --with-mhash option when running the PHP configuration script. mhash is available from http://mhash.sourceforge.net/.
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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.