234 lines
7.8 KiB
Rust
234 lines
7.8 KiB
Rust
use core::array;
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use super::*;
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use crate::{sha256, HashEngine};
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#[test]
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#[cfg(feature = "alloc")]
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fn test() {
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use alloc::string::ToString;
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#[derive(Clone)]
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struct Test {
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input: &'static str,
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output: [u8; 32],
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output_str: &'static str,
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}
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#[rustfmt::skip]
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let tests = [
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// Examples from wikipedia
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Test {
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input: "",
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output: [
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0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14,
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0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
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0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
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0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55,
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],
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output_str: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
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},
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Test {
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input: "The quick brown fox jumps over the lazy dog",
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output: [
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0xd7, 0xa8, 0xfb, 0xb3, 0x07, 0xd7, 0x80, 0x94,
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0x69, 0xca, 0x9a, 0xbc, 0xb0, 0x08, 0x2e, 0x4f,
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0x8d, 0x56, 0x51, 0xe4, 0x6d, 0x3c, 0xdb, 0x76,
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0x2d, 0x02, 0xd0, 0xbf, 0x37, 0xc9, 0xe5, 0x92,
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],
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output_str: "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592",
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},
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Test {
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input: "The quick brown fox jumps over the lazy dog.",
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output: [
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0xef, 0x53, 0x7f, 0x25, 0xc8, 0x95, 0xbf, 0xa7,
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0x82, 0x52, 0x65, 0x29, 0xa9, 0xb6, 0x3d, 0x97,
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0xaa, 0x63, 0x15, 0x64, 0xd5, 0xd7, 0x89, 0xc2,
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0xb7, 0x65, 0x44, 0x8c, 0x86, 0x35, 0xfb, 0x6c,
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],
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output_str: "ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c",
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},
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];
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for test in tests {
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// Hash through high-level API, check hex encoding/decoding
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let hash = sha256::Hash::hash(test.input.as_bytes());
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assert_eq!(hash, test.output_str.parse::<sha256::Hash>().expect("parse hex"));
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assert_eq!(hash.as_byte_array(), &test.output);
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assert_eq!(hash.to_string(), test.output_str);
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// Hash through engine, checking that we can input byte by byte
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let mut engine = sha256::Hash::engine();
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for ch in test.input.as_bytes() {
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engine.input(&[*ch]);
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}
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let manual_hash = sha256::Hash::from_engine(engine);
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assert_eq!(hash, manual_hash);
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assert_eq!(hash.to_byte_array(), test.output);
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}
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}
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#[test]
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#[cfg(feature = "alloc")]
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fn fmt_roundtrips() {
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use alloc::format;
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let hash = sha256::Hash::hash(b"some arbitrary bytes");
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let hex = format!("{}", hash);
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let rinsed = hex.parse::<sha256::Hash>().expect("failed to parse hex");
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assert_eq!(rinsed, hash)
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}
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#[test]
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#[rustfmt::skip]
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pub(crate) fn midstate() {
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// Test vector obtained by doing an asset issuance on Elements
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let mut engine = sha256::Hash::engine();
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// sha256dhash of outpoint
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// 73828cbc65fd68ab78dc86992b76ae50ae2bf8ceedbe8de0483172f0886219f7:0
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engine.input(&[
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0x9d, 0xd0, 0x1b, 0x56, 0xb1, 0x56, 0x45, 0x14,
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0x3e, 0xad, 0x15, 0x8d, 0xec, 0x19, 0xf8, 0xce,
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0xa9, 0x0b, 0xd0, 0xa9, 0xb2, 0xf8, 0x1d, 0x21,
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0xff, 0xa3, 0xa4, 0xc6, 0x44, 0x81, 0xd4, 0x1c,
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]);
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// 32 bytes of zeroes representing "new asset"
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engine.input(&[0; 32]);
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// RPC output
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static WANT: Midstate = sha256::Midstate::new([
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0x0b, 0xcf, 0xe0, 0xe5, 0x4e, 0x6c, 0xc7, 0xd3,
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0x4f, 0x4f, 0x7c, 0x1d, 0xf0, 0xb0, 0xf5, 0x03,
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0xf2, 0xf7, 0x12, 0x91, 0x2a, 0x06, 0x05, 0xb4,
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0x14, 0xed, 0x33, 0x7f, 0x7f, 0x03, 0x2e, 0x03,
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], 64);
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assert_eq!(
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engine.midstate().expect("total_bytes_hashed is valid"),
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WANT,
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);
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}
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#[test]
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fn engine_with_state() {
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let mut engine = sha256::Hash::engine();
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let midstate_engine = sha256::HashEngine::from_midstate(engine.midstate_unchecked());
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// Fresh engine and engine initialized with fresh state should have same state
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assert_eq!(engine.h, midstate_engine.h);
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// Midstate changes after writing 64 bytes
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engine.input(&[1; 63]);
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assert_eq!(engine.h, midstate_engine.h);
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engine.input(&[2; 1]);
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assert_ne!(engine.h, midstate_engine.h);
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// Initializing an engine with midstate from another engine should result in
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// both engines producing the same hashes
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let data_vec: &[&[u8]] = &[&[3u8; 1], &[4u8; 63], &[5u8; 65], &[6u8; 66]];
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for data in data_vec {
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let mut engine = engine.clone();
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let mut midstate_engine =
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sha256::HashEngine::from_midstate(engine.midstate_unchecked());
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assert_eq!(engine.h, midstate_engine.h);
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assert_eq!(engine.bytes_hashed, midstate_engine.bytes_hashed);
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engine.input(data);
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midstate_engine.input(data);
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assert_eq!(engine.h, midstate_engine.h);
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let hash1 = sha256::Hash::from_engine(engine);
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let hash2 = sha256::Hash::from_engine(midstate_engine);
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assert_eq!(hash1, hash2);
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}
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// Test that a specific midstate results in a specific hash. Midstate was
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// obtained by applying sha256 to sha256("MuSig coefficient")||sha256("MuSig
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// coefficient").
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#[rustfmt::skip]
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static MIDSTATE: [u8; 32] = [
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0x0f, 0xd0, 0x69, 0x0c, 0xfe, 0xfe, 0xae, 0x97,
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0x99, 0x6e, 0xac, 0x7f, 0x5c, 0x30, 0xd8, 0x64,
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0x8c, 0x4a, 0x05, 0x73, 0xac, 0xa1, 0xa2, 0x2f,
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0x6f, 0x43, 0xb8, 0x01, 0x85, 0xce, 0x27, 0xcd,
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];
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#[rustfmt::skip]
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static HASH_EXPECTED: [u8; 32] = [
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0x18, 0x84, 0xe4, 0x72, 0x40, 0x4e, 0xf4, 0x5a,
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0xb4, 0x9c, 0x4e, 0xa4, 0x9a, 0xe6, 0x23, 0xa8,
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0x88, 0x52, 0x7f, 0x7d, 0x8a, 0x06, 0x94, 0x20,
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0x8f, 0xf1, 0xf7, 0xa9, 0xd5, 0x69, 0x09, 0x59,
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];
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let midstate_engine =
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sha256::HashEngine::from_midstate(sha256::Midstate::new(MIDSTATE, 64));
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let hash = sha256::Hash::from_engine(midstate_engine);
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assert_eq!(hash, sha256::Hash(HASH_EXPECTED));
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}
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#[test]
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fn hash_unoptimized() {
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let bytes: [u8; 256] = array::from_fn(|i| i as u8);
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for i in 0..=256 {
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let bytes = &bytes[0..i];
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assert_eq!(
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Hash::hash(bytes),
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Hash::hash_unoptimized(bytes),
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"hashes don't match for n_bytes_hashed {}",
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i + 1
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);
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}
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}
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// The midstate of an empty hash engine tagged with "TapLeaf".
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const TAP_LEAF_MIDSTATE: Midstate = Midstate::new(
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[
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156, 224, 228, 230, 124, 17, 108, 57, 56, 179, 202, 242, 195, 15, 80, 137, 211, 243,
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147, 108, 71, 99, 110, 96, 125, 179, 62, 234, 221, 198, 240, 201,
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],
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64,
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);
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#[test]
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fn const_midstate() { assert_eq!(Midstate::hash_tag(b"TapLeaf"), TAP_LEAF_MIDSTATE,) }
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#[test]
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#[cfg(feature = "alloc")]
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fn regression_midstate_debug_format() {
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use alloc::format;
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let want = "Midstate { bytes: 9ce0e4e67c116c3938b3caf2c30f5089d3f3936c47636e607db33eeaddc6f0c9, length: 64 }";
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let got = format!("{:?}", TAP_LEAF_MIDSTATE);
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assert_eq!(got, want);
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}
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#[test]
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#[cfg(feature = "serde")]
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fn sha256_serde() {
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use serde_test::{assert_tokens, Configure, Token};
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#[rustfmt::skip]
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static HASH_BYTES: [u8; 32] = [
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0xef, 0x53, 0x7f, 0x25, 0xc8, 0x95, 0xbf, 0xa7,
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0x82, 0x52, 0x65, 0x29, 0xa9, 0xb6, 0x3d, 0x97,
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0xaa, 0x63, 0x15, 0x64, 0xd5, 0xd7, 0x89, 0xc2,
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0xb7, 0x65, 0x44, 0x8c, 0x86, 0x35, 0xfb, 0x6c,
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];
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let hash = sha256::Hash::from_slice(&HASH_BYTES).expect("right number of bytes");
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assert_tokens(&hash.compact(), &[Token::BorrowedBytes(&HASH_BYTES[..])]);
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assert_tokens(
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&hash.readable(),
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&[Token::Str("ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c")],
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);
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}
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#[cfg(target_arch = "wasm32")]
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mod wasm_tests {
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use super::*;
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#[test]
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#[wasm_bindgen_test::wasm_bindgen_test]
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fn sha256_tests() {
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test();
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midstate();
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engine_with_state();
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}
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}
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