PHP library allowing to generate BTC addresses from private keys
This piece of software is provided without warranty of any kind, use it at your own risk.
php 5.4.0 or newer.
php5-gmp needs to be installed.
If you want to launch the test file you need to be under a unix system with libbitcoin intalled on it.
Best way is to use composer
composer require bitcoin-php/bitcoin-ecdsa
Alternatively add following snippet in you composer.json
"bitcoin-php/bitcoin-ecdsa" : ">=1.3"
use BitcoinPHP\BitcoinECDSA\BitcoinECDSA; require_once("src/BitcoinPHP/BitcoinECDSA/BitcoinECDSA.php"); $bitcoinECDSA = new BitcoinECDSA();
Set a private key
examples of private keys :
Generate a random private key
The nonce is optional, typically the nonce is a chunck of random data you get from the user. This can be mouse coordinates. Using a nonce adds randomness, which means the generated private key is stronger.
Get the private key
Returns the private key.
Get the Wif
returns the private key under the Wallet Import Format
Get the Public Key
Returns the compressed public key. The compressed PubKey starts with 0x02 if it's y coordinate is even and 0x03 if it's odd, the next 32 bytes corresponds to the x coordinates.
Example : 0226c50013603b085fbc26411d5d7e564b252d88964eedc4e01251d2d495e92c29
Get the Uncompressed Public Key
Returns the The uncompressed PubKey. The uncompressed PubKey starts with 0x04, the next 32 bytes are the x coordinates, the last 32 bytes are the y coordinates.
Example : 04c80e8af3f1b7816a18aa24f242fc0740e9c4027d67c76dacf4ce32d2e5aace241c426fd288a9976ca750f1b192d3acd89dfbeca07ef27f3e5eb5d482354c4249
Get the coordinates of the Public Key
Returns an array containing the x and y coordinates of the public key
Example : Array ( [x] => a69243f3c4c047aba38d7ac3660317629c957ab1f89ea42343aee186538a34f8 [y] => b6d862f39819060378542a3bb43ff76b5d7bb23fc012f09c3cd2724bebe0b0bd )
Get the Address
Returns the compressed Bitcoin Address.
Get the uncompressed Address
Returns the uncompressed Bitcoin Address.
Validate an address
Returns true if the address is valid and false if it isn't
Validate a Wif key
Returns true if the WIF key is valid and false if it isn't
Sign a message
Returns a satoshi client standard signed message.
verify a message
Returns true if the signature is matching the address and false if it isn't.
sign a sha256 hash
Returns a DER encoded hexadecimal signature.
verify a signature
$bitcoinECDSA->checkDerSignature($pubKey, $signature, $hash)
Returns true if the signature is matching the public key and false if it isn't.
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