import type { KeyLike } from '../types';
export interface GenerateKeyPairResult<KeyLikeType extends KeyLike = KeyLike> {
    /** The generated Private Key. */
    privateKey: KeyLikeType;
    /** Public Key corresponding to the generated Private Key. */
    publicKey: KeyLikeType;
}
export interface GenerateKeyPairOptions {
    /**
     * The EC "crv" (Curve) or OKP "crv" (Subtype of Key Pair) value to generate. The curve must be
     * both supported on the runtime as well as applicable for the given JWA algorithm identifier.
     */
    crv?: string;
    /**
     * A hint for RSA algorithms to generate an RSA key of a given `modulusLength` (Key size in bits).
     * JOSE requires 2048 bits or larger. Default is 2048.
     */
    modulusLength?: number;
    /**
     * (Only effective in Web Crypto API runtimes) The value to use as
     * {@link https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/generateKey SubtleCrypto.generateKey()}
     * `extractable` argument. Default is false.
     *
     */
    extractable?: boolean;
}
/**
 * Generates a private and a public key for a given JWA algorithm identifier. This can only generate
 * asymmetric key pairs. For symmetric secrets use the `generateSecret` function.
 *
 * Note: Under Web Crypto API runtime the `privateKey` is generated with `extractable` set to
 * `false` by default. See {@link GenerateKeyPairOptions.extractable} to generate an extractable
 * `privateKey`.
 *
 * @param alg JWA Algorithm Identifier to be used with the generated key pair.
 * @param options Additional options passed down to the key pair generation.
 */
export declare function generateKeyPair<KeyLikeType extends KeyLike = KeyLike>(alg: string, options?: GenerateKeyPairOptions): Promise<GenerateKeyPairResult<KeyLikeType>>;