import type { Bytes, PrivKey } from "@noble/secp256k1";
/**
 * Generates a deterministic nonce (ephemeral scalar k) using RFC 6979.
 * @param secretKey The private key as bytes
 * @param digest The message digest
 * @returns The generated nonce as bytes
 */
export declare function generateNonce(secretKey: PrivKey, digest: Bytes): Bytes;
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