/**
 * Railgun SDK utilities
 * Deterministic credential derivation from EOA private key
 */
export declare const B402_UNIFIED_MESSAGE = "b402 Incognito EOA Derivation";
/**
 * Derives a deterministic BIP39 mnemonic from an EOA private key
 * Uses UNIFIED message to match browser wallet flow
 */
export declare function deriveMnemonicFromEOA(eoaPrivateKey: string): Promise<string>;
/**
 * Generates a random 32-byte private key for shield operations
 */
export declare function getShieldPrivateKey(): string;