E vs Secret Keeper

1. About E-num -------------- E-num is an up-to-date system of authentication providing high-level security. Security is based on both cryptographic tools and architectural level. A secret access key is stored not on your computer but on your mobile phone. Thus, you can use it to work on different computers. Moreover, your key cannot be damaged or modified by Trojan Hourses and other harmful programs. 2. Authorization process --------------------- E-num is easy to use: there is no need to memorize complicated passwords. The authorization process is based on the challenge-response model. Authorization process by using E-NUM is very simple: on the authorization page the user enters his email and received a Challenge Value. Users launches the E-num application on the mobile phone and enters the Challenge Value. After that a number-answer will be shown on the phone display. User enters the number-answer in the authorization field on the website and gets access to secured sections. 3. Advantages ------------ The key advantage of E-NUM if compared with its analogs is efficiency and economy for both suppliers and consumers. No additional authorizing server is required to implement the E-NUM authorization system on a website of an Internet store, in banking or corporate systems, because all necessary information is stored in the E-NUM database. Data exchange is performed by using E-num interfaces provided by the system via the secure https protocol. Clients use their (Java compatible) mobile phones to get authorized at websites integrated with E-NUM. Users do not need any kind of expensive devices. A unique cipherpad is embedded in the Java application designed for mobile phones.

Secret Keeper is a standalone end-to-end encryption tool. It turns any communication channel into a secure one: encrypt a message or a file, send the result over a regular messenger or e-mail, or show it as a QR code — only the intended recipient can decrypt it. NO SERVERS, NO ACCOUNTS • The app is fully offline: no sign-up, no phone number, no e-mail. • Keys are generated on your device and never leave it. • We collect no data at all — there is simply nowhere to send it. CRYPTOGRAPHY • Modern standard algorithms: X25519 + AES-GCM. • Your identity is a 12-word seed phrase: it restores your profile on a new device. • Your address is a short string / QR code that is safe to share openly. • The envelope format is open and documented (secretkeeper.net). ACCESS PROTECTION • PIN code and biometrics (Face ID / Touch ID / fingerprint). • Duress PIN: a separate code that opens an empty profile. • Automatic wipe after several failed PIN attempts. • Locks when the app goes to background; screenshot protection (can be turned off). MESSAGING AND FILES • Offline chats: per-contact message history, stored encrypted. • Encrypt files of any type (.skf) — photos, videos, documents. • Backup is a single encrypted file (.skb): its contents can only be opened with your seed phrase. INTEGRATIONS • Tetatet Chat: link the apps and secret messages get delivered online automatically. • The Secret Keeper browser extension encrypts right on websites. • Passwordless sign-in to services via QR (SK Login). WHO IT IS FOR Anyone who values privacy: personal correspondence, passwords and codes, documents, medical and financial data. Secret Keeper requires no trust in a middleman — verifiable cryptography instead of promises. Open protocol specification: https://secretkeeper.net/protocol Privacy policy: https://secretkeeper.net/privacy