/**
 * @fileoverview IMembershipProofService interface.
 *
 * Generates and verifies ring signatures proving BrightTrust membership
 * without revealing which specific member created the content.
 *
 * @see Requirements 18
 */
import { PlatformID } from '@digitaldefiance/ecies-lib';
/**
 * Interface for ring signature membership proof generation and verification.
 *
 * Anonymous content carries a ring signature proving the creator is one
 * of the current BrightTrust members without revealing which one. The proof
 * is bound to the specific content hash, preventing reuse across content.
 *
 * @template TID - Platform ID type for frontend/backend DTO compatibility
 */
export interface IMembershipProofService<TID extends PlatformID = Uint8Array> {
    /**
     * Generate a ring signature proving the signer is one of the current BrightTrust members.
     * The proof is bound to the specific content hash.
     * @param signerPrivateKey - The signer's private key
     * @param memberPublicKeys - Public keys of all current BrightTrust members
     * @param contentHash - Hash of the content being signed
     * @returns The ring signature proof bytes
     */
    generateProof(signerPrivateKey: Uint8Array, memberPublicKeys: Uint8Array[], contentHash: Uint8Array): Promise<Uint8Array>;
    /**
     * Verify a membership proof against the current member set and content hash.
     * @param proof - The ring signature proof to verify
     * @param memberPublicKeys - Public keys of all current BrightTrust members
     * @param contentHash - Hash of the content the proof should be bound to
     * @returns True if the proof is valid
     */
    verifyProof(proof: Uint8Array, memberPublicKeys: Uint8Array[], contentHash: Uint8Array): Promise<boolean>;
    /** Generic marker for DTO compatibility */
    _platformId?: TID;
}
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