/**
 * Society Protocol — ZKP Identity Proofs (Schnorr PoK)
 *
 * Non-interactive Schnorr proof of DID/key ownership via Fiat-Shamir.
 * Ed25519 signatures ARE Schnorr signatures — we use ed.sign(challenge, key)
 * as a zero-knowledge proof of private key ownership.
 *
 * Based on: Agent-OSI Layer 3 (arxiv 2602.13795)
 */
import { type Identity } from './identity.js';
export interface IdentityProof {
    did: string;
    challenge: string;
    proof: string;
    roomId: string;
    timestamp: number;
    nonce: string;
    expiresAt: number;
}
export interface IdentityProofVerifyResult {
    valid: boolean;
    did: string;
    reason?: string;
}
/**
 * Create a non-interactive Schnorr proof of DID ownership.
 *
 * The challenge is SHA-512(did || roomId || timestamp || nonce),
 * and the proof is ed.sign(challenge, privateKey).
 */
export declare function createIdentityProof(identity: Identity, roomId: string, ttlMs?: number): IdentityProof;
/**
 * Verify a non-interactive Schnorr proof of DID ownership.
 *
 * 1. Recompute the challenge from the proof fields
 * 2. Extract public key from the DID
 * 3. Verify the Ed25519 signature
 * 4. Check TTL expiration
 */
export declare function verifyIdentityProof(proof: IdentityProof): IdentityProofVerifyResult;
export declare function serializeIdentityProof(proof: IdentityProof): Uint8Array;
export declare function deserializeIdentityProof(data: Uint8Array): IdentityProof;
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