export type Curves = 'ed25519' | 'secp256k1' | 'p256' | 'bip25519';
/**
 *
 * @param seed bip39.mnemonicToSeed
 * @param derivationPath Tezos Requirement 44'/1729' for HD key address default 44'/1729'/0'/0'
 * @param curve 'ed25519' | 'secp256k1' | 'p256''
 * @returns final Derivation of HD keys tezos Secret key
 * @throws InvalidCurveError | ToBeImplemented
 */
export declare const generateSecretKey: (seed: Uint8Array, derivationPath: string, curve: Curves) => string;