/**
 * JSON Canonicalization Scheme (RFC 8785) wrapper.
 *
 * Single source of truth for the canonical-JSON step. All signing
 * inputs and HMAC inputs run through this exactly once.
 *
 * Returns the canonical JSON STRING (not bytes). Use `utf8Bytes` to
 * convert when feeding to crypto primitives.
 */
export declare function jcs(value: unknown): string;
/**
 * Strip one named field from a layer object, then canonicalize the
 * rest, then return UTF-8 bytes. This is the "signing input" recipe
 * from phase 4.
 */
export declare function signingBytes(layer: Record<string, unknown>, sigFieldName: string): Uint8Array;
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