Developer Reference Guide

FAQs help you build encryption into your application, including information specific to Twilio and Firebase platforms

22 articles in this collection
Written by Dmytro Matviiv and Matheus Cardoso

How do I encrypt for a user that isn't registered yet with E3Kit?

There are business logic solutions to keep data secure, even if the recipient hasn't been defined yet.

Written by Matheus Cardoso
Updated over a week ago

How to temporarily encrypt data for unregistered users using E3Kit

True end-to-end encryption is not possible if the message recipient is not yet registered with E3Kit, but a less-secure solution exists.

Written by Matheus Cardoso
Updated over a week ago

Encryption Concepts

How many public/private key pairs can each user have?

#key pairs #private key

Written by Dmytro Matviiv
Updated over a week ago

How do I delete a user from my application?

Learn how to remove a user and their Card from your Virgil application and about the implications on billing and encrypted data access.

Written by Matheus Cardoso
Updated over a week ago

Where is the user's private key stored?

#key storage #Virgil SDK

Written by Dmytro Matviiv
Updated over a week ago

How long does it take to encrypt/decrypt data?

#encryption/decryption time

Written by Dmytro Matviiv
Updated over a week ago

Is it secure to store data and files unencrypted locally on a user's device?

E2EE, HIPAA, iOS, Android

Written by Dmytro Matviiv
Updated over a week ago

I need an ERN/ECCN number for my app store submission or BIS Self-Classification report

The app stores may ask you for an Export Control Classification Number (ECCN) or Encryption Registration Number (ERN). We got you covered!

Written by Dmytro Matviiv
Updated over a week ago

E3Kit

What cryptographic algorithms does E3Kit use?

E3Kit is a simplified SDK for end-to-end encryption. It uses a subset of the algorithms available in our crypto library. But what are they?

Written by Matheus Cardoso
Updated over a week ago

How to protect the user backup passwords in your database

If you have to store the E3Kit backup passwords for your users' private keys in your database, you can secure them with a master keypair.

Written by Matheus Cardoso
Updated over a week ago

How do I back up and restore a private key without requiring users to remember another password?

Private key backups can be unlocked using a secret known only to the user, like a password. Here's a solution based on secret questions.

Written by Matheus Cardoso
Updated over a week ago

How to integrate E3kit in Flutter (for iOS)?

E3kit, Flutter, iOS, E2EE

Written by Dmytro Matviiv
Updated over a week ago

Trust

Does Virgil Security control the end users' private keys?

Only end users have access to their private keys and encrypted data.

Written by Dmytro Matviiv
Updated over a week ago

Can anyone (my admin, service provider, Virgil Security, etc.) decrypt the data I'm sending or receiving?

#encrypted data #data protection

Written by Dmytro Matviiv
Updated over a week ago

Can someone replace my Virgil Card on the Virgil Cards Service?

Written by Dmytro Matviiv
Updated over a week ago

Twilio

How do I delete message data from Twilio after delivery?

Twilio stores your application's encrypted message data by default, but you can change this for added security or HIPAA compliance.

Written by Matheus Cardoso
Updated over a week ago

When we upload files to Twilio Programmable chat is that secured and encrypted?

E2EE Twilio

Written by Dmytro Matviiv
Updated over a week ago

Firebase

How to store the encrypted history on Firebase server (for JS, iOS, Android)?

demo-firebase-js, Firebase, JS, iOS, Android

Written by Dmytro Matviiv
Updated over a week ago

How to implement encrypted push notifications in Firebase Chat?

iOS, Firebase

Written by Dmytro Matviiv
Updated over a week ago

Can a user see old messages, if he/she removes the app, installs it and logs in the same device again with the same credentials?

Android, Firebase

Written by Dmytro Matviiv
Updated over a week ago

Virgil Crypto

Does Virgil Security have a library for randomizers?

keygen, random bytes

Written by Dmytro Matviiv
Updated over a week ago

Is Virgil Crypto Library compatible across different languages and platforms?

#Virgil Crypto library #Cross-platform

Written by Dmytro Matviiv
Updated over a week ago