export declare const algs: Map<number, {
    name: string;
    hash?: string | undefined;
}>;
/**
   +-----------+-------+---------+----------+--------------------------+
   | Name      | Value | Hash    | Tag      | Description              |
   |           |       |         | Length   |                          |
   +-----------+-------+---------+----------+--------------------------+
   | HMAC      | 4     | SHA-256 | 64       | HMAC w/ SHA-256          |
   | 256/64    |       |         |          | truncated to 64 bits     |
   | HMAC      | 5     | SHA-256 | 256      | HMAC w/ SHA-256          |
   | 256/256   |       |         |          |                          |
   | HMAC      | 6     | SHA-384 | 384      | HMAC w/ SHA-384          |
   | 384/384   |       |         |          |                          |
   | HMAC      | 7     | SHA-512 | 512      | HMAC w/ SHA-512          |
   | 512/512   |       |         |          |                          |
   +-----------+-------+---------+----------+--------------------------+
 */
export declare const macAlgs: Map<number, {
    name: SupportedMacAlg;
    hash: string;
    length?: number | undefined;
}>;
export declare const macAlgsToValue: Map<SupportedMacAlg, number>;
export declare const algsToValue: Map<string, number>;
export declare const headers: {
    [k: string]: number;
};
export type ProtectedHeaders = {
    alg?: 'EdDSA' | 'ES256' | 'ES384' | 'ES512' | 'PS256' | 'PS384' | 'PS512' | 'RS256' | 'RS384' | 'RS512';
    crit?: number[];
    ctyp?: number | string;
    [key: string]: unknown;
};
export type SupportedMacAlg = 'HS256' | 'HS384' | 'HS512';
export type MacProtectedHeaders = {
    alg?: SupportedMacAlg;
    crit?: number[];
    ctyp?: number | string;
    [key: string]: unknown;
};
export type UnprotectedHeaders = {
    ctyp?: number | string;
    kid?: Uint8Array | string;
    x5chain?: Uint8Array | Uint8Array[];
};
export declare const encodeProtectedHeaders: (protectedHeaders: ProtectedHeaders | undefined) => any;
export declare const mapUnprotectedHeaders: (unprotectedHeaders: UnprotectedHeaders | undefined) => Map<number, unknown>;