bwwc-mpkgen.php

<?php

// https://github.com/bkkcoins/misc
//
// Example using GenAddress as a cmd line utility
//
// requires phpecc library
// easy way is: git clone git://github.com/mdanter/phpecc.git
// in the directory where this code lives
// and then this loader below will take care of it.

// bcmath module in php seems to be very slow
// apparently the gmp module is much faster
// base2dec needs to be written for gmp as phpecc is missing it

//===========================================================================
function BWWC__MATH_generate_bitcoin_address_from_mpk_v1($master_public_key, $key_index)
{
    return ElectrumHelper::mpk_to_bc_address($master_public_key, $key_index, ElectrumHelper::V1);
}
//===========================================================================

//===========================================================================
function BWWC__MATH_generate_bitcoin_address_from_mpk_v2($master_public_key, $key_index, $is_for_change = false)
{
    return ElectrumHelper::mpk_to_bc_address($master_public_key, $key_index, ElectrumHelper::V2, $is_for_change);
}
//===========================================================================

//===========================================================================
function BWWC__MATH_generate_bitcoin_address_from_mpk($master_public_key, $key_index, $is_for_change = false)
{
    if (USE_EXT != 'GMP' && USE_EXT != 'BCMATH') {
        BWWC__log_event(__FILE__, __LINE__, "Neither GMP nor BCMATH PHP math libraries are present. Aborting.");
        return false;
    }

    if (preg_match('/^[a-f0-9]{128}$/', $master_public_key)) {
        return BWWC__MATH_generate_bitcoin_address_from_mpk_v1($master_public_key, $key_index);
    }

    if (preg_match('/^xpub[a-zA-Z0-9]{107}$/', $master_public_key)) {
        return BWWC__MATH_generate_bitcoin_address_from_mpk_v2($master_public_key, $key_index, $is_for_change);
    }

    BWWC__log_event(__FILE__, __LINE__, "Invalid MPK passed: '$master_public_key'. Aborting.");
    return false;
}
//===========================================================================