Merge rust-bitcoin/rust-bitcoin#1911: Add a verify function to PublicKey
e04ac1e743
Add a verify function to PublicKey (Tobin C. Harding) Pull request description: Expose signature verification functionality for ECDSA signatures on the `PublicKey` type. We should have an identical function on `XOnlyPublicKey` but this will have to be done in `secp2561`: https://github.com/rust-bitcoin/rust-secp256k1/pull/618 Idea from Kixunil: https://github.com/rust-bitcoin/rust-bitcoin/pull/1744#issuecomment-1534200841 ACKs for top commit: apoelstra: ACKe04ac1e743
Kixunil: ACKe04ac1e743
Tree-SHA512: f26c223a1e5cc89e5c5fc12b22e621b9e8c395b8f91d7a58c6c938d45bc531e6682b178990b5a049718dbea66fff6d19d6fbcf926f142c781ad5213708ee7afa
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@ -16,6 +16,7 @@ use internals::write_err;
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pub use secp256k1::rand;
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pub use secp256k1::rand;
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pub use secp256k1::{self, constants, KeyPair, Parity, Secp256k1, Verification, XOnlyPublicKey};
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pub use secp256k1::{self, constants, KeyPair, Parity, Secp256k1, Verification, XOnlyPublicKey};
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use crate::crypto::ecdsa;
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use crate::hash_types::{PubkeyHash, WPubkeyHash};
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use crate::hash_types::{PubkeyHash, WPubkeyHash};
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use crate::network::constants::Network;
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use crate::network::constants::Network;
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use crate::prelude::*;
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use crate::prelude::*;
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@ -251,6 +252,16 @@ impl PublicKey {
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) -> PublicKey {
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) -> PublicKey {
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sk.public_key(secp)
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sk.public_key(secp)
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}
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}
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/// Checks that `sig` is a valid ECDSA signature for `msg` using this public key.
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pub fn verify<C: secp256k1::Verification>(
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&self,
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secp: &Secp256k1<C>,
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msg: &secp256k1::Message,
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sig: &ecdsa::Signature,
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) -> Result<(), Error> {
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Ok(secp.verify_ecdsa(msg, &sig.sig, &self.inner)?)
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}
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}
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}
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impl From<PublicKey> for XOnlyPublicKey {
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impl From<PublicKey> for XOnlyPublicKey {
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