/**
 * Parser for RFC 9421 Signature-Input and Signature headers.
 *
 * Implements minimal RFC 9651 Structured Fields parsing for
 * Dictionary and Inner List types as needed by HTTP Signatures.
 */
import { ParsedSignatureParams, ParsedSignature } from './types.js';
/**
 * Parse Signature-Input header value into structured parameters.
 *
 * Format: label=("component1" "component2");param1=value1;param2=value2
 *
 * @param headerValue - Raw Signature-Input header value
 * @returns Map of label to parsed parameters
 */
export declare function parseSignatureInput(headerValue: string): Map<string, ParsedSignatureParams>;
/**
 * Parse Signature header value into raw signature bytes.
 *
 * Format: label=:base64signature:
 *
 * @param headerValue - Raw Signature header value
 * @returns Map of label to signature bytes
 */
export declare function parseSignatureHeader(headerValue: string): Map<string, {
    bytes: Uint8Array;
    base64: string;
}>;
/**
 * Parse complete signature from both headers.
 *
 * @param signatureInput - Signature-Input header value
 * @param signature - Signature header value
 * @param label - Optional specific label to parse (defaults to first)
 * @returns Parsed signature or throws HttpSignatureError
 */
export declare function parseSignature(signatureInput: string, signature: string, label?: string, options?: {
    requireAlg?: boolean;
    requireCreated?: boolean;
}): ParsedSignature;
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