/**
 * Encoding mutation - obfuscates prompts using various encoding schemes
 * Tests if the model can be tricked by encoded payloads
 */
import { type CvssScore } from '../severity';
import type { Mutation } from './index';
export type EncodingType = 'base64' | 'rot13' | 'hex' | 'unicode' | 'mixed';
export declare class EncodingMutation implements Mutation {
    readonly name = "encoding";
    readonly description = "Obfuscates prompts using Base64, ROT13, hex, or unicode encoding";
    readonly severity: "high";
    readonly cvssScore: CvssScore;
    private encodingType;
    constructor(encodingType?: EncodingType);
    mutate(prompt: string): string;
    /**
     * Select a random encoding type
     */
    private randomEncodingType;
    /**
     * Base64 encode the prompt with instruction to decode
     */
    private base64Encode;
    /**
     * ROT13 encode the prompt with instruction to decode
     */
    private rot13Encode;
    /**
     * Hex encode the prompt with instruction to decode
     */
    private hexEncode;
    /**
     * Unicode escape encode with instruction to decode
     */
    private unicodeEncode;
}
//# sourceMappingURL=encoding.d.ts.map