/**
 * Conformance Digest Computation
 *
 * Handles SHA-256 hashing, JCS canonicalization, and vectors digest computation.
 */
/**
 * Compute SHA-256 digest of a string
 */
export declare function sha256(content: string): string;
/**
 * Convert Zod path array to JSON Pointer (RFC 6901)
 *
 * @param path - Array of path segments from Zod (string for keys, number for array indices)
 * @returns JSON Pointer string (e.g., "/evidence/attestations/0/scope")
 */
export declare function zodPathToJsonPointer(path: (string | number)[]): string;
/**
 * Compute canonical input digest using JCS (RFC 8785)
 *
 * Uses JSON Canonicalization Scheme for deterministic serialization,
 * ensuring consistent digests across implementations regardless of
 * JSON key ordering from JSON.parse.
 *
 * @returns Object with alg and value (alg differs if fallback was used)
 */
export declare function computeCanonicalDigest(input: unknown): {
    alg: string;
    value: string;
};
/**
 * Compute comprehensive vectors digest by hashing all fixture files
 *
 * VECTORS DIGEST CONTRACT (NORMATIVE):
 * ====================================
 *
 * 1. FILE SELECTION:
 *    - INCLUDES: manifest.json (if present) at root level
 *    - INCLUDES: All files in category directories with extensions: .json, .txt, .jwks, .pem, .zip
 *    - EXCLUDES: .DS_Store, .gitkeep, Thumbs.db
 *
 * 2. RECURSION:
 *    - Hashes files in nested directories (e.g., bundle/vectors/*.json)
 *
 * 3. ORDERING:
 *    - All files sorted lexicographically by normalized relative path
 *    - Path separator is always forward slash (/)
 *    - Comparison uses default string comparison (ASCII/Unicode code point order)
 *
 * 4. HASH INPUT FORMAT (per file):
 *    - relativePath + NUL byte (\x00) + sha256(fileBytes)
 *    - relativePath uses forward slashes, no leading slash
 *    - fileBytes are raw bytes, NO newline normalization
 *
 * 5. FINAL DIGEST:
 *    - SHA-256 of all concatenated (path + NUL + hash) entries
 *    - Reported as lowercase hex string
 *
 * This contract ensures:
 * - Digest changes when any fixture content changes
 * - Digest is reproducible across platforms
 * - Digest can be verified by other implementations
 */
export declare function computeVectorsDigest(fixturesDir: string, categories: string[]): string;
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