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Enforce that x-only keys cannot be used in non-tr descriptors #344

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Apr 20, 2022
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4 changes: 2 additions & 2 deletions src/descriptor/key.rs
Original file line number Diff line number Diff line change
Expand Up @@ -705,9 +705,9 @@ impl MiniscriptKey for DescriptorPublicKey {
fn is_x_only_key(&self) -> bool {
match self {
DescriptorPublicKey::SinglePub(DescriptorSinglePub {
key: SinglePubKey::FullKey(ref key),
key: SinglePubKey::XOnly(ref _key),
..
}) => key.is_x_only_key(),
}) => true,
_ => false,
}
}
Expand Down
15 changes: 15 additions & 0 deletions src/descriptor/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1721,4 +1721,19 @@ pk(03f28773c2d975288bc7d1d205c3748651b075fbc6610e58cddeeddf8f19405aa8))";
let descriptor: Descriptor<DescriptorPublicKey> = descriptor_str.parse().unwrap();
assert_eq!(descriptor.to_string(), "sh(wsh(pk(xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL)))#6c6hwr22");
}

#[test]
fn test_xonly_keys() {
let comp_key = "0308c0fcf8895f4361b4fc77afe2ad53b0bd27dcebfd863421b2b246dc283d4103";
let x_only_key = "08c0fcf8895f4361b4fc77afe2ad53b0bd27dcebfd863421b2b246dc283d4103";

// Both x-only keys and comp keys allowed in tr
Descriptor::<DescriptorPublicKey>::from_str(&format!("tr({})", comp_key)).unwrap();
Descriptor::<DescriptorPublicKey>::from_str(&format!("tr({})", x_only_key)).unwrap();

// Only compressed keys allowed in wsh
Descriptor::<DescriptorPublicKey>::from_str(&format!("wsh(pk({}))", comp_key)).unwrap();
Descriptor::<DescriptorPublicKey>::from_str(&format!("wsh(pk({}))", x_only_key))
.unwrap_err();
}
}