/**
 * Encrypt a model key using RSA with a public key
 * @param publicKey The public key to encrypt with
 * @param modelKey The model key to encrypt
 * @returns The encrypted model key
 */
export declare const encryptModelKey: (publicKey: string, modelKey: string) => string;
/**
 * Get the server's public key
 * @returns The server's public key
 */
export declare const getServerPublicKey: () => Promise<string>;
/**
 * Hash a string using SHA-256
 * @param input The string to hash
 * @returns The hashed string
 */
export declare const hashString: (input: string) => Promise<string>;
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