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Merge pull request #246 from apoelstra/2019-03-key-serde 

util::key add serde de/serialization
This commit is contained in:
Andrew Poelstra 2019-03-21 21:26:25 +00:00 committed by GitHub
parent 221e53b13e 9daf7fa9dc
commit cea49b6522
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 165 additions and 1 deletions
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6
Cargo.toml
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@ -18,7 +18,7 @@ path = "src/lib.rs"
fuzztarget = ["secp256k1/fuzztarget", "bitcoin_hashes/fuzztarget"]
serde-decimal = ["use-serde", "strason"]
unstable = []
use-serde = ["serde", "bitcoin_hashes/serde"]
use-serde = ["serde", "serde_test", "bitcoin_hashes/serde"]
[dependencies]
bitcoin-bech32 = "0.9.0"
@ -34,6 +34,10 @@ tempfile = "3"
version = "1"
optional = true
[dependencies.serde_test]
version = "1"
optional = true
[dependencies.strason]
version = "0.4"
optional = true

1
src/lib.rs
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@ -49,6 +49,7 @@ extern crate hex;
extern crate rand;
extern crate secp256k1;
#[cfg(feature = "serde")] extern crate serde;
#[cfg(feature = "serde_test")] extern crate serde_test;
#[cfg(feature = "strason")] extern crate strason;
#[cfg(all(test, feature = "unstable"))] extern crate test;
#[cfg(feature="bitcoinconsensus")] extern crate bitcoinconsensus;

159
src/util/key.rs
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@ -19,6 +19,7 @@
use std::fmt::{self, Write};
use std::{io, ops};
use std::str::FromStr;
use secp256k1::{self, Secp256k1};
use consensus::encode;
use network::constants::Network;
@ -197,6 +198,118 @@ impl ops::Index<ops::RangeFull> for PrivateKey {
}
}
#[cfg(feature = "serde")]
impl ::serde::Serialize for PrivateKey {
fn serialize<S: ::serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
s.collect_str(self)
}
}
#[cfg(feature = "serde")]
impl<'de> ::serde::Deserialize<'de> for PrivateKey {
fn deserialize<D: ::serde::Deserializer<'de>>(d: D) -> Result<PrivateKey, D::Error> {
struct WifVisitor;
impl<'de> ::serde::de::Visitor<'de> for WifVisitor {
type Value = PrivateKey;
fn expecting(&self, formatter: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
formatter.write_str("an ASCII WIF string")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
if let Ok(s) = ::std::str::from_utf8(v) {
PrivateKey::from_str(s).map_err(E::custom)
} else {
Err(E::invalid_value(::serde::de::Unexpected::Bytes(v), &self))
}
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
PrivateKey::from_str(v).map_err(E::custom)
}
}
d.deserialize_str(WifVisitor)
}
}
#[cfg(feature = "serde")]
impl ::serde::Serialize for PublicKey {
fn serialize<S: ::serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
if s.is_human_readable() {
s.collect_str(self)
} else {
if self.compressed {
s.serialize_bytes(&self.key.serialize()[..])
} else {
s.serialize_bytes(&self.key.serialize_uncompressed()[..])
}
}
}
}
#[cfg(feature = "serde")]
impl<'de> ::serde::Deserialize<'de> for PublicKey {
fn deserialize<D: ::serde::Deserializer<'de>>(d: D) -> Result<PublicKey, D::Error> {
if d.is_human_readable() {
struct HexVisitor;
impl<'de> ::serde::de::Visitor<'de> for HexVisitor {
type Value = PublicKey;
fn expecting(&self, formatter: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
formatter.write_str("an ASCII hex string")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
if let Ok(hex) = ::std::str::from_utf8(v) {
PublicKey::from_str(hex).map_err(E::custom)
} else {
Err(E::invalid_value(::serde::de::Unexpected::Bytes(v), &self))
}
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
PublicKey::from_str(v).map_err(E::custom)
}
}
d.deserialize_str(HexVisitor)
} else {
struct BytesVisitor;
impl<'de> ::serde::de::Visitor<'de> for BytesVisitor {
type Value = PublicKey;
fn expecting(&self, formatter: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
formatter.write_str("a bytestring")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
PublicKey::from_slice(v).map_err(E::custom)
}
}
d.deserialize_bytes(BytesVisitor)
}
}
}
#[cfg(test)]
mod tests {
use super::{PrivateKey, PublicKey};
@ -241,4 +354,50 @@ mod tests {
assert_eq!(&pk.to_string(), "032e58afe51f9ed8ad3cc7897f634d881fdbe49a81564629ded8156bebd2ffd1af");
assert_eq!(pk, PublicKey::from_str("032e58afe51f9ed8ad3cc7897f634d881fdbe49a81564629ded8156bebd2ffd1af").unwrap());
}
#[cfg(feature = "serde")]
#[test]
fn test_key_serde() {
use serde_test::{Configure, Token, assert_tokens};
static KEY_WIF: &'static str = "cVt4o7BGAig1UXywgGSmARhxMdzP5qvQsxKkSsc1XEkw3tDTQFpy";
static PK_STR: &'static str = "039b6347398505f5ec93826dc61c19f47c66c0283ee9be980e29ce325a0f4679ef";
static PK_STR_U: &'static str = "\
04\
9b6347398505f5ec93826dc61c19f47c66c0283ee9be980e29ce325a0f4679ef\
87288ed73ce47fc4f5c79d19ebfa57da7cff3aff6e819e4ee971d86b5e61875d\
";
static PK_BYTES: [u8; 33] = [
0x03,
0x9b, 0x63, 0x47, 0x39, 0x85, 0x05, 0xf5, 0xec,
0x93, 0x82, 0x6d, 0xc6, 0x1c, 0x19, 0xf4, 0x7c,
0x66, 0xc0, 0x28, 0x3e, 0xe9, 0xbe, 0x98, 0x0e,
0x29, 0xce, 0x32, 0x5a, 0x0f, 0x46, 0x79, 0xef,
];
static PK_BYTES_U: [u8; 65] = [
0x04,
0x9b, 0x63, 0x47, 0x39, 0x85, 0x05, 0xf5, 0xec,
0x93, 0x82, 0x6d, 0xc6, 0x1c, 0x19, 0xf4, 0x7c,
0x66, 0xc0, 0x28, 0x3e, 0xe9, 0xbe, 0x98, 0x0e,
0x29, 0xce, 0x32, 0x5a, 0x0f, 0x46, 0x79, 0xef,
0x87, 0x28, 0x8e, 0xd7, 0x3c, 0xe4, 0x7f, 0xc4,
0xf5, 0xc7, 0x9d, 0x19, 0xeb, 0xfa, 0x57, 0xda,
0x7c, 0xff, 0x3a, 0xff, 0x6e, 0x81, 0x9e, 0x4e,
0xe9, 0x71, 0xd8, 0x6b, 0x5e, 0x61, 0x87, 0x5d,
];
let s = Secp256k1::new();
let sk = PrivateKey::from_str(&KEY_WIF).unwrap();
let pk = PublicKey::from_private_key(&s, &sk);
let pk_u = PublicKey {
key: pk.key,
compressed: false,
};
assert_tokens(&sk, &[Token::BorrowedStr(KEY_WIF)]);
assert_tokens(&pk.compact(), &[Token::BorrowedBytes(&PK_BYTES[..])]);
assert_tokens(&pk.readable(), &[Token::BorrowedStr(PK_STR)]);
assert_tokens(&pk_u.compact(), &[Token::BorrowedBytes(&PK_BYTES_U[..])]);
assert_tokens(&pk_u.readable(), &[Token::BorrowedStr(PK_STR_U)]);
}
}