cosm_script/keys/
signature.rs

1use crypto::sha2::Sha256;
2use secp256k1::Message;
3use secp256k1::Secp256k1;
4
5use crypto::digest::Digest;
6
7use crate::error::CosmScriptError;
8
9pub struct Signature {}
10impl Signature {
11    pub fn verify<C: secp256k1::Verification + secp256k1::Context>(
12        secp: &Secp256k1<C>,
13        pub_key: &str,
14        signature: &str,
15        blob: &str,
16    ) -> Result<(), CosmScriptError> {
17        let public = base64::decode(pub_key)?;
18        let sig = base64::decode(signature)?;
19        let pk = secp256k1::PublicKey::from_slice(public.as_slice())?;
20        let mut sha = Sha256::new();
21        let mut sha_result: [u8; 32] = [0; 32];
22        sha.input_str(blob);
23        sha.result(&mut sha_result);
24
25        let message: Message = Message::from_slice(&sha_result)?;
26        let secp_sig = secp256k1::Signature::from_compact(sig.as_slice())?;
27        secp.verify(&message, &secp_sig, &pk)?;
28        Ok(())
29    }
30}
31#[cfg(test)]
32mod tst {
33    use super::*;
34    #[allow(unused_imports)]
35    use env_logger;
36    #[test]
37    pub fn test_verify() -> anyhow::Result<()> {
38        let secp = Secp256k1::new();
39
40        let message = r#"{"account_number":"45","chain_id":"columbus-3-testnet","fee":{"amount":[{"amount":"698","denom":"uluna"}],"gas":"46467"},"memo":"","msgs":[{"type":"bank/MsgSend","value":{"amount":[{"amount":"100000000","denom":"uluna"}],"from_address":"terra1n3g37dsdlv7ryqftlkef8mhgqj4ny7p8v78lg7","to_address":"terra1wg2mlrxdmnnkkykgqg4znky86nyrtc45q336yv"}}],"sequence":"0"}"#;
41        let signature = "FJKAXRxNB5ruqukhVqZf3S/muZEUmZD10fVmWycdVIxVWiCXXFsUy2VY2jINEOUGNwfrqEZsT2dUfAvWj8obLg==";
42        let pub_key = "AiMzHaA2bvnDXfHzkjMM+vkSE/p0ymBtAFKUnUtQAeXe";
43        Signature::verify(&secp, pub_key, signature, message)?;
44        Ok(())
45    }
46}
cosm_script/keys/signature.rs

cosm_script/keys/
signature.rs
