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rust-bitcoin
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address: implement Bech32 support

This commit is contained in:
Andrew Poelstra 2018-03-09 20:27:13 +00:00
parent 9884bec577
commit 65d8df08b8
6 changed files with 219 additions and 66 deletions
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1
Cargo.toml
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@ -19,6 +19,7 @@ path = "src/lib.rs"
bitcoinconsenus = ["bitcoinconsensus"]
[dependencies]
bitcoin-bech32 = "0.5.1"
byteorder = "1.1"
rand = "0.3"
rust-crypto = "0.2"

2
README.md
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@ -90,3 +90,5 @@ See Transaction::verify and Script::verify methods.
* Un-reversed the Debug output for Sha256dHash
* Add bech32 support

1
src/lib.rs
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@ -41,6 +41,7 @@
#![deny(unused_mut)]
#![deny(missing_docs)]
extern crate bitcoin_bech32;
extern crate byteorder;
extern crate crypto;
extern crate rand;

241
src/util/address.rs
View File

@ -18,7 +18,8 @@
use std::str::FromStr;
use std::string::ToString;
use secp256k1::{self, Secp256k1};
use bitcoin_bech32::{self, WitnessProgram};
use secp256k1::Secp256k1;
use secp256k1::key::{PublicKey, SecretKey};
use blockdata::script;
@ -26,32 +27,26 @@ use blockdata::opcodes;
use network::constants::Network;
use util::hash::Hash160;
use util::base58;
use util::Error;
/// The method used to produce an address
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum Type {
/// Standard pay-to-pkhash address
PubkeyHash,
/// New-fangled P2SH address
ScriptHash
#[derive(Clone, PartialEq, Debug)]
pub enum Payload {
/// pay-to-pkhash address
PubkeyHash(Hash160),
/// P2SH address
ScriptHash(Hash160),
/// Segwit address
WitnessProgram(WitnessProgram),
}
/// An address-related error
#[derive(Clone, PartialEq, Eq, Debug)]
pub enum Error {
/// Private key did not represent a valid ECDSA secret key
Secp(secp256k1::Error)
}
#[derive(Clone, PartialEq, Eq)]
#[derive(Clone, PartialEq)]
/// A Bitcoin address
pub struct Address {
/// The type of the address
pub ty: Type,
pub payload: Payload,
/// The network on which this address is usable
pub network: Network,
/// The pubkeyhash that this address encodes
pub hash: Hash160
}
impl Address {
@ -59,13 +54,14 @@ impl Address {
#[inline]
pub fn from_key(network: Network, pk: &PublicKey, compressed: bool) -> Address {
Address {
ty: Type::PubkeyHash,
network: network,
hash: if compressed {
Hash160::from_data(&pk.serialize()[..])
} else {
Hash160::from_data(&pk.serialize_uncompressed()[..])
}
payload: Payload::PubkeyHash(
if compressed {
Hash160::from_data(&pk.serialize()[..])
} else {
Hash160::from_data(&pk.serialize_uncompressed()[..])
}
),
}
}
@ -73,29 +69,33 @@ impl Address {
#[inline]
pub fn from_script(network: Network, script: &script::Script) -> Address {
Address {
ty: Type::ScriptHash,
network: network,
hash: Hash160::from_data(&script[..])
payload: Payload::ScriptHash(Hash160::from_data(&script[..])),
}
}
/// Generates a script pubkey spending to this address
#[inline]
pub fn script_pubkey(&self) -> script::Script {
match self.ty {
Type::PubkeyHash => {
match self.payload {
Payload::PubkeyHash(ref hash) => {
script::Builder::new()
.push_opcode(opcodes::All::OP_DUP)
.push_opcode(opcodes::All::OP_HASH160)
.push_slice(&self.hash[..])
.push_slice(&hash[..])
.push_opcode(opcodes::All::OP_EQUALVERIFY)
.push_opcode(opcodes::All::OP_CHECKSIG)
}
Type::ScriptHash => {
},
Payload::ScriptHash(ref hash) => {
script::Builder::new()
.push_opcode(opcodes::All::OP_HASH160)
.push_slice(&self.hash[..])
.push_slice(&hash[..])
.push_opcode(opcodes::All::OP_EQUAL)
},
Payload::WitnessProgram(ref witprog) => {
script::Builder::new()
.push_int(witprog.version() as i64)
.push_slice(witprog.program())
}
}.into_script()
}
@ -103,40 +103,81 @@ impl Address {
impl ToString for Address {
fn to_string(&self) -> String {
let mut prefixed = [0; 21];
prefixed[0] = match (self.network, self.ty) {
(Network::Bitcoin, Type::PubkeyHash) => 0,
(Network::Bitcoin, Type::ScriptHash) => 5,
(Network::Testnet, Type::PubkeyHash) => 111,
(Network::Testnet, Type::ScriptHash) => 196
};
prefixed[1..].copy_from_slice(&self.hash[..]);
base58::check_encode_slice(&prefixed[..])
match self.payload {
Payload::PubkeyHash(ref hash) => {
let mut prefixed = [0; 21];
prefixed[0] = match self.network {
Network::Bitcoin => 0,
Network::Testnet => 111,
};
prefixed[1..].copy_from_slice(&hash[..]);
base58::check_encode_slice(&prefixed[..])
}
Payload::ScriptHash(ref hash) => {
let mut prefixed = [0; 21];
prefixed[0] = match self.network {
Network::Bitcoin => 5,
Network::Testnet => 196,
};
prefixed[1..].copy_from_slice(&hash[..]);
base58::check_encode_slice(&prefixed[..])
}
Payload::WitnessProgram(ref witprog) => {
witprog.to_address()
},
}
}
}
impl FromStr for Address {
type Err = base58::Error;
type Err = Error;
fn from_str(s: &str) -> Result<Address, base58::Error> {
fn from_str(s: &str) -> Result<Address, Error> {
// bech32 (note that upper or lowercase is allowed but NOT mixed case)
if &s.as_bytes()[0..3] == b"bc1" || &s.as_bytes()[0..3] == b"tb1" ||
&s.as_bytes()[0..3] == b"BC1" || &s.as_bytes()[0..3] == b"TB1" {
let witprog = try!(WitnessProgram::from_address(s));
let network = match witprog.network() {
bitcoin_bech32::constants::Network::Bitcoin => Network::Bitcoin,
bitcoin_bech32::constants::Network::Testnet => Network::Testnet,
_ => panic!("unknown network")
};
return Ok(Address {
network: network,
payload: Payload::WitnessProgram(witprog),
});
}
// Base 58
let data = try!(base58::from_check(s));
if data.len() != 21 {
return Err(base58::Error::InvalidLength(data.len()));
return Err(Error::Base58(base58::Error::InvalidLength(data.len())));
}
let (network, ty) = match data[0] {
0 => (Network::Bitcoin, Type::PubkeyHash),
5 => (Network::Bitcoin, Type::ScriptHash),
111 => (Network::Testnet, Type::PubkeyHash),
196 => (Network::Testnet, Type::ScriptHash),
x => { return Err(base58::Error::InvalidVersion(vec![x])); }
let (network, payload) = match data[0] {
0 => (
Network::Bitcoin,
Payload::PubkeyHash(Hash160::from(&data[1..]))
),
5 => (
Network::Bitcoin,
Payload::ScriptHash(Hash160::from(&data[1..]))
),
111 => (
Network::Testnet,
Payload::PubkeyHash(Hash160::from(&data[1..]))
),
196 => (
Network::Testnet,
Payload::ScriptHash(Hash160::from(&data[1..]))
),
x => return Err(Error::Base58(base58::Error::InvalidVersion(vec![x])))
};
Ok(Address {
ty: ty,
network: network,
hash: Hash160::from(&data[1..])
payload: payload,
})
}
}
@ -172,7 +213,7 @@ impl Privkey {
/// Converts a private key to an address
#[inline]
pub fn to_address(&self, secp: &Secp256k1) -> Result<Address, Error> {
let key = try!(PublicKey::from_secret_key(secp, &self.key).map_err(Error::Secp));
let key = try!(PublicKey::from_secret_key(secp, &self.key));
Ok(Address::from_key(self.network, &key, self.compressed))
}
@ -219,21 +260,21 @@ impl ToString for Privkey {
}
impl FromStr for Privkey {
type Err = base58::Error;
type Err = Error;
fn from_str(s: &str) -> Result<Privkey, base58::Error> {
fn from_str(s: &str) -> Result<Privkey, Error> {
let data = try!(base58::from_check(s));
let compressed = match data.len() {
33 => false,
34 => true,
_ => { return Err(base58::Error::InvalidLength(data.len())); }
_ => { return Err(Error::Base58(base58::Error::InvalidLength(data.len()))); }
};
let network = match data[0] {
128 => Network::Bitcoin,
239 => Network::Testnet,
x => { return Err(base58::Error::InvalidVersion(vec![x])); }
x => { return Err(Error::Base58(base58::Error::InvalidVersion(vec![x]))); }
};
let secp = Secp256k1::without_caps();
@ -269,14 +310,15 @@ mod tests {
#[test]
fn test_p2pkh_address_58() {
let addr = Address {
ty: Type::PubkeyHash,
network: Bitcoin,
hash: Hash160::from(&"162c5ea71c0b23f5b9022ef047c4a86470a5b070".from_hex().unwrap()[..])
payload: Payload::PubkeyHash(
Hash160::from(&"162c5ea71c0b23f5b9022ef047c4a86470a5b070".from_hex().unwrap()[..])
),
};
assert_eq!(addr.script_pubkey(), hex_script!("76a914162c5ea71c0b23f5b9022ef047c4a86470a5b07088ac"));
assert_eq!(&addr.to_string(), "132F25rTsvBdp9JzLLBHP5mvGY66i1xdiM");
assert_eq!(Address::from_str("132F25rTsvBdp9JzLLBHP5mvGY66i1xdiM"), Ok(addr));
assert_eq!(Address::from_str("132F25rTsvBdp9JzLLBHP5mvGY66i1xdiM").unwrap(), addr);
}
#[test]
@ -295,14 +337,15 @@ mod tests {
#[test]
fn test_p2sh_address_58() {
let addr = Address {
ty: Type::ScriptHash,
network: Bitcoin,
hash: Hash160::from(&"162c5ea71c0b23f5b9022ef047c4a86470a5b070".from_hex().unwrap()[..])
payload: Payload::ScriptHash(
Hash160::from(&"162c5ea71c0b23f5b9022ef047c4a86470a5b070".from_hex().unwrap()[..])
),
};
assert_eq!(addr.script_pubkey(), hex_script!("a914162c5ea71c0b23f5b9022ef047c4a86470a5b07087"));
assert_eq!(&addr.to_string(), "33iFwdLuRpW1uK1RTRqsoi8rR4NpDzk66k");
assert_eq!(Address::from_str("33iFwdLuRpW1uK1RTRqsoi8rR4NpDzk66k"), Ok(addr));
assert_eq!(Address::from_str("33iFwdLuRpW1uK1RTRqsoi8rR4NpDzk66k").unwrap(), addr);
}
#[test]
@ -311,7 +354,77 @@ mod tests {
let addr = Address::from_script(Testnet, &script);
assert_eq!(&addr.to_string(), "2N3zXjbwdTcPsJiy8sUK9FhWJhqQCxA8Jjr");
assert_eq!(Address::from_str("2N3zXjbwdTcPsJiy8sUK9FhWJhqQCxA8Jjr"), Ok(addr));
assert_eq!(Address::from_str("2N3zXjbwdTcPsJiy8sUK9FhWJhqQCxA8Jjr").unwrap(), addr);
}
#[test]
fn test_bip173_vectors() {
let addrstr = "BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4";
let addr = Address::from_str(addrstr).unwrap();
assert_eq!(addr.network, Bitcoin);
assert_eq!(addr.script_pubkey(), hex_script!("0014751e76e8199196d454941c45d1b3a323f1433bd6"));
// skip round-trip because we'll serialize to lowercase which won't match
let addrstr = "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sl5k7";
let addr = Address::from_str(addrstr).unwrap();
assert_eq!(addr.network, Testnet);
assert_eq!(addr.script_pubkey(), hex_script!("00201863143c14c5166804bd19203356da136c985678cd4d27a1b8c6329604903262"));
assert_eq!(addr.to_string(), addrstr);
let addrstr = "bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx";
let addr = Address::from_str(addrstr).unwrap();
assert_eq!(addr.network, Bitcoin);
assert_eq!(addr.script_pubkey(), hex_script!("5128751e76e8199196d454941c45d1b3a323f1433bd6751e76e8199196d454941c45d1b3a323f1433bd6"));
assert_eq!(addr.to_string(), addrstr);
let addrstr = "BC1SW50QA3JX3S";
let addr = Address::from_str(addrstr).unwrap();
assert_eq!(addr.network, Bitcoin);
assert_eq!(addr.script_pubkey(), hex_script!("6002751e"));
// skip round trip cuz caps
let addrstr = "bc1zw508d6qejxtdg4y5r3zarvaryvg6kdaj";
let addr = Address::from_str(addrstr).unwrap();
assert_eq!(addr.network, Bitcoin);
assert_eq!(addr.script_pubkey(), hex_script!("5210751e76e8199196d454941c45d1b3a323"));
assert_eq!(addr.to_string(), addrstr);
let addrstr = "tb1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesrxh6hy";
let addr = Address::from_str(addrstr).unwrap();
assert_eq!(addr.network, Testnet);
assert_eq!(addr.script_pubkey(), hex_script!("0020000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433"));
assert_eq!(addr.to_string(), addrstr);
// bad vectors
let addrstr = "tc1qw508d6qejxtdg4y5r3zarvary0c5xw7kg3g4ty"; // invalid hrp
assert!(Address::from_str(addrstr).is_err());
let addrstr = "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t5"; // invalid checksum
assert!(Address::from_str(addrstr).is_err());
let addrstr = "BC13W508D6QEJXTDG4Y5R3ZARVARY0C5XW7KN40WF2"; // invalid witness version
assert!(Address::from_str(addrstr).is_err());
let addrstr = "bc1rw5uspcuh"; // invalid program length
assert!(Address::from_str(addrstr).is_err());
let addrstr = "bc10w508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kw5rljs90"; // invalid program length
assert!(Address::from_str(addrstr).is_err());
let addrstr = "BC1QR508D6QEJXTDG4Y5R3ZARVARYV98GJ9P"; // invalid program length for wit v0
assert!(Address::from_str(addrstr).is_err());
let addrstr = "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sL5k7"; // mixed case
assert!(Address::from_str(addrstr).is_err());
let addrstr = "bc1zw508d6qejxtdg4y5r3zarvaryvqyzf3du"; // zero padding of more than 4 bits
assert!(Address::from_str(addrstr).is_err());
let addrstr = "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3pjxtptv"; // nonzero padding
assert!(Address::from_str(addrstr).is_err());
let addrstr = "bc1gmk9yu"; // empty data section
assert!(Address::from_str(addrstr).is_err());
}
#[test]

5
src/util/contracthash.rs
View File

@ -213,8 +213,9 @@ pub fn create_address(secp: &Secp256k1,
let script = try!(template.to_script(&keys));
Ok(address::Address {
network: network,
ty: address::Type::ScriptHash,
hash: hash::Hash160::from_data(&script[..])
payload: address::Payload::ScriptHash(
hash::Hash160::from_data(&script[..])
),
})
}

35
src/util/mod.rs
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@ -29,6 +29,9 @@ pub mod uint;
use std::{error, fmt, io};
use bitcoin_bech32;
use secp256k1;
/// A trait which allows numbers to act as fixed-size bit arrays
pub trait BitArray {
/// Is bit set?
@ -55,6 +58,10 @@ pub trait BitArray {
pub enum Error {
/// An I/O error
Io(io::Error),
/// Base58 encoding error
Base58(base58::Error),
/// Bech32 encoding error
Bech32(bitcoin_bech32::Error),
/// Error from the `byteorder` crate
ByteOrder(io::Error),
/// Network magic was not what we expected
@ -69,6 +76,8 @@ pub enum Error {
ParseFailed,
/// An object was added but it does not link into existing history
PrevHashNotFound,
/// secp-related error
Secp256k1(secp256k1::Error),
/// The `target` field of a block header did not match the expected difficulty
SpvBadTarget,
/// The header hash is not below the target
@ -81,10 +90,13 @@ impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Io(ref e) => fmt::Display::fmt(e, f),
Error::Base58(ref e) => fmt::Display::fmt(e, f),
Error::Bech32(ref e) => fmt::Display::fmt(e, f),
Error::ByteOrder(ref e) => fmt::Display::fmt(e, f),
Error::BadNetworkMagic(exp, got) => write!(f, "expected network magic 0x{:x}, got 0x{:x}", exp, got),
Error::BadNetworkMessage(ref got) => write!(f, "incorrect network message {}", got),
Error::Detail(ref s, ref e) => write!(f, "{}: {}", s, e),
Error::Secp256k1(ref e) => fmt::Display::fmt(e, f),
ref x => f.write_str(error::Error::description(x))
}
}
@ -94,8 +106,11 @@ impl error::Error for Error {
fn cause(&self) -> Option<&error::Error> {
match *self {
Error::Io(ref e) => Some(e),
Error::Base58(ref e) => Some(e),
Error::Bech32(ref e) => Some(e),
Error::ByteOrder(ref e) => Some(e),
Error::Detail(_, ref e) => Some(e),
Error::Secp256k1(ref e) => Some(e),
_ => None
}
}
@ -103,6 +118,8 @@ impl error::Error for Error {
fn description(&self) -> &str {
match *self {
Error::Io(ref e) => e.description(),
Error::Base58(ref e) => e.description(),
Error::Bech32(ref e) => e.description(),
Error::ByteOrder(ref e) => e.description(),
Error::BadNetworkMagic(_, _) => "incorrect network magic",
Error::BadNetworkMessage(_) => "incorrect/unexpected network message",
@ -110,6 +127,7 @@ impl error::Error for Error {
Error::BlockNotFound => "no such block",
Error::ParseFailed => "parsing error",
Error::PrevHashNotFound => "prevhash not found",
Error::Secp256k1(ref e) => e.description(),
Error::SpvBadTarget => "target incorrect",
Error::SpvBadProofOfWork => "target correct but not attained",
Error::Detail(_, ref e) => e.description()
@ -122,4 +140,21 @@ pub fn propagate_err<T>(s: String, res: Result<T, Error>) -> Result<T, Error> {
res.map_err(|err| Error::Detail(s, Box::new(err)))
}
impl From<base58::Error> for Error {
fn from(e: base58::Error) -> Error {
Error::Base58(e)
}
}
impl From<bitcoin_bech32::Error> for Error {
fn from(e: bitcoin_bech32::Error) -> Error {
Error::Bech32(e)
}
}
impl From<secp256k1::Error> for Error {
fn from(e: secp256k1::Error) -> Error {
Error::Secp256k1(e)
}
}