import { ICrypto, PkceCodes } from "@azure/msal-common/node";
/**
 * This class implements MSAL node's crypto interface, which allows it to perform base64 encoding and decoding, generating cryptographically random GUIDs and
 * implementing Proof Key for Code Exchange specs for the OAuth Authorization Code Flow using PKCE (rfc here: https://tools.ietf.org/html/rfc7636).
 * @public
 */
export declare class CryptoProvider implements ICrypto {
    private pkceGenerator;
    private guidGenerator;
    private hashUtils;
    constructor();
    /**
     * base64 URL safe encoded string
     */
    base64UrlEncode(): string;
    /**
     * Stringifies and base64Url encodes input public key
     * @param inputKid - public key id
     * @returns Base64Url encoded public key
     */
    encodeKid(): string;
    /**
     * Creates a new random GUID - used to populate state and nonce.
     * @returns string (GUID)
     */
    createNewGuid(): string;
    /**
     * Encodes input string to base64.
     * @param input - string to be encoded
     */
    base64Encode(input: string): string;
    /**
     * Decodes input string from base64.
     * @param input - string to be decoded
     */
    base64Decode(input: string): string;
    /**
     * Generates PKCE codes used in Authorization Code Flow.
     */
    generatePkceCodes(): Promise<PkceCodes>;
    /**
     * Generates a keypair, stores it and returns a thumbprint - not yet implemented for node
     */
    getPublicKeyThumbprint(): Promise<string>;
    /**
     * Removes cryptographic keypair from key store matching the keyId passed in
     * @param kid - public key id
     */
    removeTokenBindingKey(): Promise<boolean>;
    /**
     * Removes all cryptographic keys from Keystore
     */
    clearKeystore(): Promise<boolean>;
    /**
     * Signs the given object as a jwt payload with private key retrieved by given kid - currently not implemented for node
     */
    signJwt(): Promise<string>;
    /**
     * Returns the SHA-256 hash of an input string
     */
    hashString(plainText: string): Promise<string>;
}
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