import { PlaintextHeader } from "./interfaces/plaintext_header";
/**
 * This class exposes the CoverCrypt primitives.
 *
 */
export declare class CoverCryptHybridDecryption {
    private readonly _asymmetricDecryptionKey;
    constructor(asymmetricDecryptionKey: Uint8Array);
    get asymmetricDecryptionKey(): Uint8Array;
    /**
     * Decrypts a CoverCrypt ciphertext header using the given user decryption key
     * @param {Uint8Array} encryptedHeader CoverCrypt encrypted header
     * @param {object} options Additional optional options to the encryption
     * @param {Uint8Array} options.authenticationData Data use to authenticate the encrypted value when decrypting (if use, should be use during
     * @returns {Uint8Array} plaintext decrypted CoverCrypt header
     */
    decryptHybridHeader(encryptedHeader: Uint8Array, options?: {
        authenticationData?: Uint8Array;
    }): PlaintextHeader;
    /**
     * Decrypts a AES256-GCM block
     * @param {Uint8Array} symmetricKey AES key
     * @param {Uint8Array} encryptedBytes Encrypted block
     * @param {object} options Additional optional options to the encryption
     * @param {Uint8Array} options.authenticationData Data use to authenticate the encrypted value when decrypting (if use, should be use during
     * @returns {Uint8Array} plaintext decrypted block
     */
    decryptBlock(symmetricKey: Uint8Array, encryptedBytes: Uint8Array, options?: {
        authenticationData?: Uint8Array;
    }): Uint8Array;
    /**
     * Hybrid decrypt wrapper: CoverCrypt decrypt then AES decrypt
     * @param  {Uint8Array} ciphertext the encrypted data
     * @param {object} options Additional optional options to the encryption
     * @param {Uint8Array} options.authenticationData Data use to authenticate the encrypted value when decrypting (if use, should be use during
     * @returns the decrypted header metadata and the plaintext value
     */
    decrypt(ciphertext: Uint8Array, options?: {
        authenticationData?: Uint8Array;
    }): {
        headerMetadata: Uint8Array;
        plaintext: Uint8Array;
    };
}
/**
 * Hybrid decrypt wrapper: CoverCrypt decrypt then AES decrypt
 * @param decryptionKey the user key to decrypt
 * @param {Uint8Array} ciphertext the encrypted data
 * @param {object} options Additional optional options to the encryption
 * @param {Uint8Array} options.authenticationData Data use to authenticate the encrypted value when decrypting (if use, should be use during
 * @returns the decrypted header metadata and the the plaintext value
 */
export declare function decrypt(decryptionKey: Uint8Array, ciphertext: Uint8Array, options?: {
    authenticationData?: Uint8Array;
}): {
    headerMetadata: Uint8Array;
    plaintext: Uint8Array;
};
//# sourceMappingURL=decryption.d.ts.map