interface CurveOptions {
    curve: "secp256k1";
    curveParameters: readonly number[];
    privatePEMOptions: {
        label: string;
    };
    publicPEMOptions: {
        label: string;
    };
}
interface PrivateKeyPKCS1 {
    parameters: readonly number[];
    privateKey: Buffer;
    publicKey?: {
        data: Buffer;
        unused: number;
    };
    version: number;
}
type KeyFormat = "der" | "pem" | "raw";
export declare class KeyEncoder {
    static ECPrivateKey8ASN: any;
    static ECPrivateKeyASN: any;
    static SubjectPublicKeyInfoASN: any;
    algorithmID: number[];
    options: CurveOptions;
    constructor(options: CurveOptions | string);
    encodePrivate(privateKey: Buffer | string, originalFormat: KeyFormat, destinationFormat: KeyFormat, destinationFormatType?: "pkcs1" | "pkcs8"): string;
    encodePublic(publicKey: Buffer | string, originalFormat: KeyFormat, destinationFormat: KeyFormat): string;
    privateKeyObject(rawPrivateKey: string, rawPublicKey: string): PrivateKeyPKCS1;
    publicKeyObject(rawPublicKey: string): {
        algorithm: {
            curve: readonly number[];
            id: number[];
        };
        pub: {
            data: Buffer<ArrayBuffer>;
            unused: number;
        };
    };
    private PKCS1toPKCS8;
}
export {};
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