/**
 * ZKP (Zero-Knowledge Proof) crypto utilities for device bootstrap
 * Re-exports from infrastructure layer and adds ZKP-specific functionality
 */
export { getDeviceInfo, buildInfoString, formatAlgorithmString, } from "../infrastructure/crypto/utils";
/**
 * Generate device fingerprint
 */
export declare function generateDeviceFingerprint(hds: Uint8Array, bui: string, osType: string): Promise<Uint8Array>;
/**
 * Convert bytes to base64
 */
export declare function toBase64(bytes: Uint8Array): string;
/**
 * Convert bytes to hex string
 */
export declare function toHex(bytes: Uint8Array): string;
/**
 * Convert base64 to hex string
 */
export declare function base64ToHex(base64: string): string;
/**
 * Convert base64 to bytes
 */
export declare function fromBase64(str: string): Uint8Array;
/**
 * Normalize user identifiers (email) to lowercase for consistency.
 */
export declare function normalizeUserIdentifier(userid: string): string;
/**
 * Generate random bytes
 */
export declare function randomBytes(length: number): Uint8Array;
/**
 * Detect available algorithm (X25519 or ECDH P-256)
 */
export declare function detectAlgorithm(): Promise<{
    dhAlgorithm: string;
    dhCurve: string;
    signAlgorithm: string;
    algorithmString: string;
}>;
/**
 * Generate ZKP crypto materials for device bootstrap (registration flow)
 */
export interface GeneratedZkpMaterials {
    keyset: string;
    hindex: string;
    uakKeyPair: CryptoKeyPair;
    sk2: CryptoKey;
    salt1: Uint8Array;
    salt2: Uint8Array;
    combinedprs: Uint8Array;
    peerPublicKeyJWK: JsonWebKey;
    ssBits: ArrayBuffer;
    sk2Bits: ArrayBuffer;
    algorithmType: string;
    iv0: Uint8Array;
    iv1: Uint8Array;
    iv2: Uint8Array;
}
export declare function generateZkpMaterials(userid: string, domain: string): Promise<GeneratedZkpMaterials>;
/**
 * Sign a base64-encoded challenge for ZKP.
 */
export declare function signZkpChallenge(privateKey: CryptoKey, challengeB64: string, domain: string): Promise<{
    signature: string;
    mapp: string;
}>;