import { TimestampInfo, TimestampVerificationResult, TimestampVerificationOptions } from "./types";
/**
 * Parse RFC 3161 TimeStampToken from base64
 * @param timestampBase64 Base64-encoded timestamp token
 * @returns Parsed timestamp info or null if parsing fails
 */
export declare function parseTimestamp(timestampBase64: string): TimestampInfo | null;
/**
 * Verify that timestamp covers the signature value
 *
 * Per XAdES (ETSI EN 319 132-1), the SignatureTimeStamp covers the canonicalized
 * ds:SignatureValue XML element, not just its base64 content.
 *
 * @param timestampInfo Parsed timestamp info
 * @param canonicalSignatureValue Canonicalized ds:SignatureValue XML element
 * @returns True if the timestamp covers the signature
 */
export declare function verifyTimestampCoversSignature(timestampInfo: TimestampInfo, canonicalSignatureValue: string): Promise<boolean>;
/**
 * Verify an RFC 3161 timestamp token
 * @param timestampBase64 Base64-encoded timestamp token
 * @param options Verification options
 * @returns Timestamp verification result
 */
export declare function verifyTimestamp(timestampBase64: string, options?: TimestampVerificationOptions): Promise<TimestampVerificationResult>;
/**
 * Get the trusted timestamp time from a signature
 * This should be used instead of the self-declared signingTime for certificate validation
 * @param timestampBase64 Base64-encoded timestamp token
 * @returns The timestamp generation time, or null if parsing fails
 */
export declare function getTimestampTime(timestampBase64: string): Date | null;