Verify Signatures
- @solana/kit
- @solana/web3.js
- Anchor
import { useParaSolanaSigner } from '@getpara/react-sdk';
import { createSolanaRpc } from '@solana/kit';
import { getUtf8Encoder } from '@solana/codecs-strings';
import nacl from 'tweetnacl';
import bs58 from 'bs58';
const rpc = createSolanaRpc("https://api.mainnet-beta.solana.com");
function VerifySignature() {
const { solanaSigner, isLoading } = useParaSolanaSigner({ rpc });
const verifyMessage = async () => {
if (!solanaSigner) return false;
const message = "Hello, Solana!";
const messageBytes = new Uint8Array(getUtf8Encoder().encode(message));
const signatureResult = await solanaSigner.signMessages([
{ content: messageBytes, signatures: {} }
]);
const signatureBytes = signatureResult[0][solanaSigner.address];
const publicKeyBuffer = solanaSigner.sender;
const isValid = nacl.sign.detached.verify(
messageBytes,
signatureBytes,
publicKeyBuffer
);
return isValid;
};
return <button onClick={verifyMessage}>Sign & Verify Message</button>;
}
import { useParaSolana } from './hooks/useParaSolana';
import { PublicKey } from '@solana/web3.js';
import nacl from 'tweetnacl';
import bs58 from 'bs58';
function VerifySignature() {
const { signer } = useParaSolana();
const verifyMessage = async () => {
if (!signer) {
console.error("No signer available. Connect wallet first.");
return;
}
const message = "Hello, Solana!";
const messageBytes = new TextEncoder().encode(message);
// Sign the message first
const signature = await signer.signBytes(Buffer.from(messageBytes));
const signatureBase58 = bs58.encode(signature);
// Verify the signature
try {
const publicKeyBytes = new PublicKey(signer.address).toBytes();
const isValid = nacl.sign.detached.verify(
messageBytes,
signature,
publicKeyBytes
);
console.log("Message:", message);
console.log("Signature:", signatureBase58);
console.log("Signature valid:", isValid);
console.log("Signer:", signer.address);
return isValid;
} catch (error) {
console.error("Verification failed:", error);
return false;
}
};
return <button onClick={verifyMessage}>Sign & Verify Message</button>;
}
Verify signatures using the same approach as @solana/kit — the signer address is the public key:
import { useParaSolanaSigner } from "@getpara/react-sdk";
import { createSolanaRpc } from "@solana/kit";
import { getUtf8Encoder } from "@solana/codecs";
import nacl from "tweetnacl";
import bs58 from "bs58";
const rpc = createSolanaRpc("https://api.devnet.solana.com");
function SignAndVerify() {
const { solanaSigner, isLoading } = useParaSolanaSigner({ rpc });
const handleSignAndVerify = async () => {
if (!solanaSigner) return;
const message = getUtf8Encoder().encode("Verify me!");
const [signatures] = await solanaSigner.signMessages([
{ content: message, signatures: {} },
]);
const signatureBytes = signatures[solanaSigner.address];
const publicKeyBytes = bs58.decode(solanaSigner.address);
const isValid = nacl.sign.detached.verify(message, signatureBytes, publicKeyBytes);
console.log("Signature valid:", isValid);
};
if (isLoading) return <p>Loading...</p>;
return <button onClick={handleSignAndVerify}>Sign & Verify</button>;
}