import { PSSignatureParams } from './params';
import { BytearrayWrapper } from '../bytearray-wrapper';
/**
 * Public key for modified Pointcheval-Sanders signature scheme used in `Coconut`.
 */
export declare class PSPublicKey extends BytearrayWrapper {
    supportedMessageCount(): number;
    adaptForLess(messageCount: number): PSPublicKey;
    isValid(): boolean;
}
/**
 * Secret key for modified Pointcheval-Sanders signature scheme used in `Coconut`.
 */
export declare class PSSecretKey extends BytearrayWrapper {
    supportedMessageCount(): number;
    adaptForLess(messageCount: number): PSSecretKey;
    adaptForMore(seed: Uint8Array, messageCount: number): PSSecretKey;
    static generate(messageCount: number, seed?: Uint8Array): PSSecretKey;
    static dealShamirSS(messageCount: number, threshold: number, total: number): [PSSecretKey, PSSecretKey[]];
    generatePublicKey(params: PSSignatureParams): PSPublicKey;
}
/**
 * Keypair (secret and public keys) for modified Pointcheval-Sanders signature scheme used in `Coconut`.
 */
export declare class PSKeypair {
    sk: PSSecretKey;
    pk: PSPublicKey;
    constructor(sk: PSSecretKey, pk: PSPublicKey);
    get secretKey(): PSSecretKey;
    get publicKey(): PSPublicKey;
    supportedMessageCount(): number;
    adaptForLess(messageCount: number): PSKeypair;
    static generate(params: PSSignatureParams, seed?: Uint8Array): PSKeypair;
}
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