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feat(precompile): Add precompile key type #179

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May 24, 2024
Merged

feat(precompile): Add precompile key type #179

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14 changes: 13 additions & 1 deletion crates/preimage/src/key.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,10 @@ pub enum PreimageKeyType {
/// `keccak256(commitment ++ z)`, and then the high-order byte of the digest is set to the
/// type byte.
Blob = 5,
/// Precompile key types are global and context independent. Precompile keys are constructed as
/// `keccak256(precompile_addr ++ input)`, and then the high-order byte of the digest is set to
/// the type byte.
Precompile = 6,
}

impl TryFrom<u8> for PreimageKeyType {
Expand All @@ -35,6 +39,7 @@ impl TryFrom<u8> for PreimageKeyType {
3 => PreimageKeyType::GlobalGeneric,
4 => PreimageKeyType::Sha256,
5 => PreimageKeyType::Blob,
6 => PreimageKeyType::Precompile,
_ => anyhow::bail!("Invalid preimage key type"),
})
}
Expand Down Expand Up @@ -108,7 +113,14 @@ mod test {

#[test]
fn test_preimage_keys() {
let types = [PreimageKeyType::Local, PreimageKeyType::Keccak256];
let types = [
PreimageKeyType::Local,
PreimageKeyType::Keccak256,
PreimageKeyType::GlobalGeneric,
PreimageKeyType::Sha256,
PreimageKeyType::Blob,
PreimageKeyType::Precompile,
];

for key_type in types {
let key = PreimageKey::new([0xFFu8; 32], key_type);
Expand Down
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