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Crypto Currency for PHP

A collection of common utilities and libraries in PHP for use with Bitcoin and Zetacoin compatable crypto currencies ustilizing the secp256k1 ECDSA curve. Full documentation and extended examples are avialable at: http://www.unibia.com/unibianet/developer/crypto-currency-php-libraries-pure-php-zetacoin-and-bitcoin-compatable-crypto-currencies

The code may be messy and all over the place, but I'm still pulling things together as I merge this code base with items from the PHPECC codebase. The current features include:

• Private Key Generation and Loading
• Public Address Print Out
• Message Signing and Verification
• Address Generation and Validation
• Address compression, de-compression, encoding, and decoding.
• Supports Arbitrary Address Prefixes

Currently, the following items are working

• Base58.class.php
• SECp256k1.class.php
• PointMathGMP.class.php
• AddressValidation.class.php
• AddressCodec.class.php
• PrivateKey.class.php
• Signature.class.php
• Wallet.class.php

Planned features include:

• Transaction Generation
• Transaction Signing

No ETA.

Requirements

The current implementation requires the php5-gmp extension. Future version will automaticly detect and switch between GMP and BCMATH

Usage

AddressCodec

The AddressCodec class provides a simple interface for common Zetacoin/Bitcoin (and compatable) address functions. Load the following classes in your PHP code:

The most basic example, get the X and Y coordnates of a DER Encoded public key (old format)

That will return an array with both X and Y:

The more usefull method is with the new compressed public keys used by modern crypto currencies:

Works the other way around too:

On to the more usefull items, Encode a public key into a Crypto Currency address. First Hash your public key then Encode it.

Gives you:

Specify your own prefix (in HEX):

Gives you:

Wallet

The Wallet class provides a simple interface to common Zetacoin/Bitcoin (and compatable) functions. At the moment, the wallet can load a private key, display it's associated receive address, and of course, message signing/verification!

To use this, load the following classes in your PHP code:

First you must generate or specify a PrivateKey:

Load this PrivateKey into the Wallet. Optionally set the network prefix (aka address version/prefix) as a HEX, and network name.

Print out your recieve address:

Sign a message in pure PHP!!!

Puts out something like:

Verify a signed message using the Satoshi client's standard message signature format. A PrivateKey is not required when you only need to verify signed messsages.

Note that the line endings are important since the parser is quite picky at the moment This will be fixed in a later release.

Yes, it's pure PHP!

If you don't want to bother with line endings, you can feed the components in manually:

If you find this usefull, please send me some

Bitcoin: 1B6eyXVRPxdEitW5vWrUnzzXUy6o38P9wN

Zetacoin: ZK6kdE5H5q7H6QRNRAuqLF6RrVD4cFbiNX

The items in the repository may contain some derivative work based on Jan Moritz Lindemann, Matyas Danter, and Joey Hewitt