NAME

CBitcoin::CBHD - A wrapper for Bip32 Hierarchial Deterministic Keys

SEE INSTEAD?

The module CBitcoin::CBHD provides another interface for generating Bip32 Hierarchial Deterministic Keys. For most of the legwork, this wrapper relies on the picocoin library.

dl_load_flags

Don't worry about this.

---+ constructors

---++ new($xprv_txt)

Create a cbhd object from a serialized, base58 encoded scalar.

TODO: check for the appropriate network bytes.

---++ generate($seed)

generate a key (parent)

---++ deriveChild($hardbool,$childid)

If you want to go from private parent keypair to public child keypair, then set $hardbool to false. If you want to go from private parent keypair to private child keypair, then set $hardbool to true.

---++ deriveChildPubExt($childid)

If you want to take an CBHD key with private key and create a soft child that does not have the private bits, then use this function.

From Hard to Soft.

---+ utilities

---++ is_soft_child

Returns true if yes, false if soft.

---++ export_xpub

---++ export_xprv

---++ network_bytes()

Return either 'production' or 'test' depending on whether we are on testnet or mainnet

---++ cbhd_type

Return 'private' if we posses the serialized private key, else return public.

---++ address()

The network bytes are determined by the global variable $CBitcoin::network_bytes.

---++ publickey()

Provide the public key in raw binary form.

---++ privatekey()

Provide the private key in raw binary form.

---++ ripemdHASH160

---++ index

---++ childid->($hardbool,$index)

---++ print_to_stderr

---+ encryption

These are just subroutines, not object methods.

---++ encrypt($recepient_pub,$readsub,$writesub)->$cipher_data

$cipher_data = $hmac.$ephemeral_pubkey.$ciphertext

$hmac = hmac_sha256(sha256(data),shared_secret);

---++ decrypt($recepient_priv,$header,$readsub,$writesub)->0/1

$cipher_data = $hmac.$ephemeral_pubkey.$ciphertext

---++ offset_keypair_private

Given a private key and an offset, create a new private/public keypair.

---++ shared_secret($pubkey,$privkey,$kdf1_sub)->0/1

SYNOPSIS

use CBitcoin;
use CBitcoin::CBHD;

my $root1 = CBitcoin::CBHD->generate("my magic seed!");
my $child_hard = $root1->deriveChild(1,323);
my $c_1_323_0_20_priv = $child_hard->deriveChild(0,20);

print "Root address:".$root1->address()."\n";

AUTHOR

Joel De Jesus, <dejesus.joel at e-flamingo.jp>

BUGS

Please report any bugs or feature requests to https://github.com/favioflamingo/libcbitcoin-perl. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

perldoc CBitcoin::CBHD

You can also look for information at:

ACKNOWLEDGEMENTS

LICENSE AND COPYRIGHT

Copyright 2014 Joel De Jesus.

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.