/**
 * DTO for verifying MFA code
 *
 * Used to verify MFA code using the appropriate provider.
 * Routes verification to the correct provider based on method name.
 *
 * @example
 * ```typescript
 * const isValid = await mfaService.verifyCode({
 *   sub: 'user-uuid',
 *   methodName: 'totp',
 *   code: '123456',
 *   deviceId: 1
 * });
 * ```
 */
/**
 * DTO for verifying MFA code
 */
export declare class VerifyMFACodeDTO {
    /**
     * User's unique identifier (UUID v4)
     *
     * Validation:
     * - Must be a valid UUID v4 format
     * - Matches DB constraint: char(36) or uuid
     *
     * Sanitization:
     * - Trimmed
     * - Lowercased for consistency
     *
     * @example "a21b654c-2746-4168-acee-c175083a65cd"
     */
    sub: string;
    /**
     * MFA method name
     *
     * Validation:
     * - Must be one of: totp, sms, email, passkey, backup
     * - Max 50 characters
     *
     * Sanitization:
     * - Trimmed and lowercased
     *
     * @example "totp"
     */
    methodName: string;
    /**
     * Verification code or credential (provider-specific)
     *
     * Validation:
     * - Must be a string or object depending on method
     * - For TOTP/SMS/Email: string code
     * - For Passkey: credential object
     * - For Backup: string code
     */
    code: string | Record<string, unknown>;
    /**
     * Optional device ID
     *
     * Validation:
     * - Must be a positive integer if provided
     */
    deviceId?: number;
}
/**
 * Response DTO for MFA code verification
 */
export declare class VerifyMFACodeResponseDTO {
    /**
     * Whether verification succeeded
     */
    valid: boolean;
}
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