import type { H2ARole } from "./types.js";
export declare const H2A_COMPREHENSION_ATTESTATION_BODY_KIND: "comprehension-attestation";
export interface H2AComprehensionAttestation {
    kind: typeof H2A_COMPREHENSION_ATTESTATION_BODY_KIND;
    subject: string;
    dossierHash: string;
    at: string;
}
export interface BuildComprehensionAttestationInput {
    subject: string;
    dossier?: unknown;
    dossierHash?: string;
    at?: string;
}
export type H2APublicKeyRing = readonly string[] | Readonly<Record<string, string | readonly string[]>>;
export declare function buildComprehensionAttestation(input: BuildComprehensionAttestationInput): H2AComprehensionAttestation;
export declare function isComprehensionAttestation(value: unknown): value is H2AComprehensionAttestation;
export declare function canAttestComprehension(role: H2ARole, rights?: readonly string[]): boolean;
export declare function verifyComprehensionAttestation(envelope: unknown, publicKeys: H2APublicKeyRing): boolean;
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