import type { Fr } from '@aztec/foundation/curves/bn254';
import type { GrumpkinScalar } from '@aztec/foundation/curves/grumpkin';
import type { AztecAddress } from '../aztec-address/index.js';
import type { PublicKey } from '../keys/public_key.js';
/**
 * Derives an app-siloed ECDH shared secret.
 *
 * Computes the raw ECDH shared secret `S = secretKey * publicKey`, then app-silos it:
 * `s_app = h(DOM_SEP__APP_SILOED_ECDH_SHARED_SECRET, S.x, S.y, contractAddress)`
 *
 * @param secretKey - The secret key used to derive shared secret.
 * @param publicKey - The public key used to derive shared secret.
 * @param contractAddress - The address of the calling contract, used for app-siloing.
 * @returns The app-siloed shared secret as a Field.
 * @throws If the publicKey is zero.
 */
export declare function deriveAppSiloedSharedSecret(secretKey: GrumpkinScalar, publicKey: PublicKey, contractAddress: AztecAddress): Promise<Fr>;
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