keyfuse / tokucore

A Simple, Powerful, Modular Library for Bitcoin Blockchain As a Service(BAAS)

tokucore – A Simple, Powerful Library for Bitcoin Apps.

tokucore

tokucore is a simple Go (golang) library for creating and manipulating bitcoin data structures like creating keys and addresses (HD/BIP32/BIP39/SegWit) or parsing, creating and signing transactions.

Overview

• Base58 encoding/decoding
• Block headers, block and transaction parsing
• Transaction creation, signature and verification
• Script parsing and execution
• BIP 32 (deterministic wallets)
• BIP 39 (mnemonic code for generating deterministic keys)
• BIP 173 (Base32 address format for native v0-16 witness outputs)
• Two-Party ECDSA Threshold Signature Scheme (TSS)
• Mult-Party Schnorr Threshold Signature Scheme (TSS)
• Scriptless Adaptor Signature

Focus

• Simple and easy to use
• No external dependencies
• Full test coverage

Tests

$ export GOPATH=`pwd`
$ go get -u github.com/keyfuse/tokucore/xcore
$ cd src/github.com/keyfuse/tokucore/
$ make test

Examples

• Generate a Random Address
• Generate a P2PKH Address
• Generate a P2SH Address
• Generate a 2-of-3 P2SH MultiSig Address
• Generate a P2WPKH SegWit Address
• Generate a P2WSH SegWit Address
• Create a P2PKH Transaction
• Create a 2-to-3 P2SH MultiSig Transaction
• Create a Transaction with an OP_RETURN Output
• Create a Transaction with Verify
• Create a Transaction with P2WPKH Segwit Output
• Create a Transaction with P2WPKH SegWit Input
• Create a Transaction with P2WSH SegWit Output
• Create a Transaction with P2WSH SegWit Input
• Create a Two-Party-Threshold ECDSA Transaction with P2PKH Output
• Create a Two-Party-Threshold ECDSA Transaction with P2PKH Input
• Create a Two-Party-Threshold ECDSA Transaction with P2WPKH SegWit Output
• Create a Two-Party-Threshold ECDSA Transaction with P2WPKH SegWit Input
• Scriptless ECDSA adaptor signature
• HDWallet
• Mnemonic

Performance

The performance was done on an Intel i5 (2.50GHz) with golang benchmark.

Implementation
2P-ECDSA KeyGen	2.13 ms
2P-ECDSA Signing	426.05 ms
2P-Schnorr KeyGen	0.01 ms
2P-Schnorr Signing	4.31 ms

$ go test -bench=BenchmarkMpc*  ./xcrypto

goos: linux
goarch: amd64
pkg: github.com/keyfuse/tokucore/xcrypto
BenchmarkMpcEcdsaKeyGen-4      	    1000	   2133566 ns/op
BenchmarkMpcEcdsaSigning-4     	       3	 426058258 ns/op
BenchmarkMpcSchnorrKeyGen-4    	  100000	     11310 ns/op
BenchmarkMpcSchnorrSigning-4   	     300	   4315631 ns/op

Can I trust this code?

Don't trust. Verify.

License

tokucore is released under the BSD License.

tokucore's Issues

Can not verify signature schnorr MPC

In file: https://github.com/keyfuse/tokucore/blob/master/xcrypto/mpc_schnorr_test.go

If I add code:

assert.Nil(t, SchnorrVerify(sharepub1, hash, fs1))

at the end function TestMpcSchnorr, I got error: schnorr.signature.verify.failed

How can fix it?

Can we connect this to a bitcoin full node instead of providing UXTOs?