/**
 * Peer message signing: EIP-191 personal_sign with AntSeed domain prefixes to
 * prevent cross-domain signature replay. Moved from @antseed/node p2p/identity.
 */
import { Wallet } from 'ethers';
export declare function hexToBytes(hex: string): Uint8Array;
export declare function bytesToHex(bytes: Uint8Array): string;
/**
 * Sign binary data. Domain-tagged with "antseed-data-v1:" to prevent
 * cross-domain replay. Uses EIP-191 personal_sign; returns 65 bytes (r+s+v).
 */
export declare function signData(wallet: Wallet, data: Uint8Array): Uint8Array;
/**
 * Verify a binary data signature from a remote peer using ecrecover.
 * The expectedAddress is the 40-char hex peerId (no 0x prefix).
 */
export declare function verifySignature(expectedAddress: string, signature: Uint8Array, data: Uint8Array): boolean;
/**
 * Sign a UTF-8 message and return a hex-encoded secp256k1 signature (130 hex
 * chars = 65 bytes). Domain-tagged with "antseed-msg-v1:".
 */
export declare function signUtf8(wallet: Wallet, message: string): string;
/**
 * Verify a UTF-8 message against a hex-encoded secp256k1 signature.
 * Returns true if the recovered address matches the expected address.
 */
export declare function verifyUtf8(address: string, message: string, signatureHex: string): boolean;
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