import { Construct } from "../core/construct";
import { Token } from '../core/tokens';
/**
 * A token that represents a value that's expected to be a secret, like
 * passwords and keys.
 *
 * It is recommended to use the `SecretParameter` construct in order to import
 * secret values from the SSM Parameter Store instead of storing them in your
 * code.
 *
 * However, you can also just pass in values, like any other token: `new Secret('bla')`
 */
export declare class Secret extends Token {
}
export interface SecretProps {
    /**
     * The name of the SSM parameter where the secret value is stored.
     */
    ssmParameter: string;
    /**
     * A string of up to 4000 characters that describes the parameter.
     * @default No description
     */
    description?: string;
    /**
     * A regular expression that represents the patterns to allow for String types.
     */
    allowedPattern?: string;
    /**
     * An array containing the list of values allowed for the parameter.
     */
    allowedValues?: string[];
    /**
     * A string that explains a constraint when the constraint is violated.
     * For example, without a constraint description, a parameter that has an allowed
     * pattern of [A-Za-z0-9]+ displays the following error message when the user specifies
     * an invalid value:
     */
    constraintDescription?: string;
    /**
     * An integer value that determines the largest number of characters you want to allow for String types.
     */
    maxLength?: number;
    /**
     * An integer value that determines the smallest number of characters you want to allow for String types.
     */
    minLength?: number;
}
/**
 * Defines a secret value resolved from the Systems Manager (SSM) Parameter
 * Store during deployment. This is useful for referencing values that you do
 * not wish to include in your code base, such as secrets, passwords and keys.
 *
 * This construct will add a CloudFormation parameter to your template bound to
 * an SSM parameter (of type "AWS::SSM::Parameter::Value<String>"). Deployment
 * will fail if the value doesn't exist in the target environment.
 *
 * Important: For values other than secrets, prefer to use the
 * `SSMParameterProvider` which resolves SSM parameter in design-time, and
 * ensures that stack deployments are deterministic.
 */
export declare class SecretParameter extends Construct {
    /**
     * The value of the secret parameter.
     */
    value: Secret;
    constructor(parent: Construct, name: string, props: SecretProps);
}