all-in-one privacy solution":["Proton Unlimited è una soluzione completa per la privacy"],"Black Friday":["Black Friday"],"No ads. Privacy by default.":["Niente pubblicità. La prima regola è la privacy."],"People before profits":["Le persone prima dei profitti"],"Security through transparency":["Più sicurezza grazie alla trasparenza"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Le migliori offerte di Proton Mail per il ${ BLACK_FRIDAY }"],"The world’s only community- supported email service":["L'unico servizio di posta elettronica al mondo supportato dalla community"]},"specialoffer:limited":{"${ hours } hour":["${ hours } ora","${ hours } ore"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Restano ${ hoursLeft }, ${ minutesLeft } e ${ secondsLeft }"],"${ minutes } minute":["${ minutes } minuto","${ minutes } minuti"],"${ seconds } second":["${ seconds } secondo","${ seconds } secondi"],"Limited time offer":["Offerta a tempo limitato"]},"specialoffer:listitem":{"Create multiple addresses":["Crea indirizzi multipli"],"Hide-my-email aliases":["Alias hide-my-email"],"Quickly unsubscribe from newsletters":["Annulla rapidamente l'iscrizione alle newsletter"],"Use your own domain name":["Utilizza il tuo nome di dominio"]},"specialoffer:logos":{"As featured in":["Ne hanno parlato"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Scegli un'email cifrata per proteggere la tua privacy"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Offerta Black Friday di Proton Mail - sconti fino al 40%"]},"specialoffer:newmetadescription":{"Get up to 40% off Proton Mail subscriptions this Black Friday. Find great deals on our secure end-to-end encrypted email plans.":["Per questo Black Friday ti offriamo fino al 40% di sconto sugli abbonamenti a Proton Mail. Scopri le straordinarie offerte sui piani di abbonamento alla nostra email dotata di crittografia end-to-end."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Offerta di Proton Mail per il Black Friday | Fino al 40% di sconto sulla nostra email sicura"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Addebito di ${ TOTAL_SUM } per il primo anno"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Addebito di ${ TOTAL_SUM } per i primi 2 anni"],"30-day money-back guarantee":["Garanzia soddisfatti o rimborsati di 30 giorni"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Addebito di ${ TOTAL_SUM } per i primi 2 anni"],"Billed at ${ TOTAL_SUM } for the first year":["Addebito di ${ TOTAL_SUM } per il primo anno"],"You save ${ SAVE_SUM }":["Risparmi ${ SAVE_SUM }"]},"specialoffer:off":{"${ DISCOUNT } off":["−${ DISCOUNT }"],"${ PERCENT_OFF } off":["−${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Adoro ProtonMail"],"My favorite email service":["Il mio servizio email preferito"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Grazie Proton perché ci proteggi nell'universo complicato di internet."],"You get what you pay for. In the case of big tech, if you pay nothing, you get used. I quit using Gmail and switched to @ProtonMail":["Ottieni quello per cui hai pagato. Nel caso di big tech, se non paghi niente, vieni usato. Ho smesso di usare Gmail e sono passata a @ProtonMail"]},"specialoffer:time":{"Days":["Giorni"],"Hours":["Ore"],"Min":["Min"]},"specialoffer:title":{"And much more":["E molto altro"],"Make your inbox yours":["Personalizza la tua casella di posta"],"Safe from trackers":["Protezione dai tracker"],"Stay organized":["Mantieni tutto organizzato"],"Black Friday email deals":["Offerte email del Black Friday"],"Don’t just take our word for it":["Non lo diciamo solo noi"],"Our story":["La nostra storia"],"Transfer your data from Google in one click":["Trasferisci i tuoi dati da Google con un solo clic"]},"specialoffer:tooltip":{"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, connect up to 10 devices, access worldwide streaming services, malware and ad-blocker, and more.":["Accedi a contenuti bloccati e naviga in modalità privata. Include ${ TOTAL_SERVERS } server in più di ${ TOTAL_COUNTRIES } Paesi, possibilità di connettere fino a 10 dispositivi, accesso a servizi di streaming in tutto il mondo, blocco di malware e adblocker, e altro ancora."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Condividi facilmente il tuo calendario con familiari, amici o colleghi e visualizza calendari esterni."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Include il supporto per 1 dominio email personalizzato, 10 indirizzi email, 10 alias hide-my-email, condivisione del calendario e altro ancora."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Include il supporto per 3 domini email personalizzati, 15 indirizzi email, alias hide-my-email illimitati, condivisione del calendario e altro ancora."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Gestisci fino a 25 calendari, app per dispositivi mobili, protezione con la crittografia end-to-end, importazione del calendario da Google in un solo clic e altro ancora."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["Al momento abbiamo dei problemi con il servizio di Proton VPN"],"Learn more":["Scopri di più"]},"Status banner":{"Learn more":["Scopri di più"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Attenzione: stiamo riscontrando dei problemi con il servizio di ${ issues[0] }"],"We are experiencing issues with one or more services at the moment.":["Stiamo riscontrando dei problemi con uno o più servizi."]},"suggestions":{"Suggestions":["Suggerimenti"]},"Support":{"Sub category":["Sottocategoria","Sottocategorie"]},"Support article":{"${ readingTime } min":["${ readingTime } minuto","${ readingTime } minuti"],"Category":["Categoria","Categorie"],"Didn’t find what you were looking for?":["Non hai trovato quello che cercavi?"],"General contact":["Contatti generali"],"Get help":["Ottieni supporto"],"Legal contact":["Contatti legali"],"Media contact":["Contatti per la stampa"],"Partnerships contact":["Contatti per collaborazioni"],"Reading":["Lettura"]},"Support categories":{"Browse Proton product support":["Consulta l'assistenza sui prodotti Proton"]},"Support category":{"There is no article in this category yet.":["Per ora non ci sono articoli in questa categoria."]},"Support troubleshooting":{"--- Select ---":["--- Seleziona ---"],"App version":["Versione dell'app"],"Browser":["Browser"],"Check if this helps":["Verifica se questo ti è utile"],"Choose a category for your question":["Scegli una categoria per la tua domanda"],"Choose a product":["Scegli un prodotto"],"Did this solve your issue ?":["Ti ha risolto il problema?"],"Faster assistance is just a few clicks away — please make your selections":["Ottieni assistenza più velocemente con pochi clic. Fai la tua selezione"],"No, contact support":["No, contatta il supporto"],"Proton account":["Account Proton"],"Proton Bridge":["Proton Bridge"],"Proton Calendar":["Proton Calendar"],"Proton Drive":["Proton Drive"],"Proton for Business":["Proton for Business"],"Proton Mail":["Proton Mail"],"Proton Pass":["Proton Pass"],"Proton VPN":["Proton VPN"],"Thank you for your feedback":["Grazie per il feedback"],"Troubleshooting":["Risoluzione dei problemi"],"What can we help with ?":["In cosa possiamo esserti di aiuto?"],"Yes":["Sì"]},"support_modal_search_query":{"Search query":["Query di ricerca"]},"support_search_button":{"Search":["Cerca"]},"support_search_i_am_looking_for":{"I'm looking for":["Sto cercando"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Per una risoluzione più rapida, segnala il problema dall'app Bridge: Aiuto > Segnala un problema."],"Information":["Informazioni"]},"SupportForm:option":{"Account Security":["Sicurezza dell'account"],"Contacts":["Contatti"],"Custom email domain":["Dominio email personalizzato"],"Email delivery and Spam":["Consegna delle email e spam"],"Encryption":["Crittografia"],"Login and password":["Login e password"],"Merge aliases and accounts":["Unione di alias e account"],"Migrate to Proton":["Migrazione a Proton"],"Notifications":["Notifiche"],"Other":["Altro"],"Plans and billing":["Piani e fatturazione"],"Proton for Business":["Proton for Business"],"Sign up":["Iscrizione"],"Storage":["Archiviazione"],"Users, addresses, and identities":["Utenti, indirizzi e identità"]},"SupportForm:optionIntro":{"Select a topic":["Seleziona un argomento"]},"swiss_baseed_feature":{"Swiss based":["Con sede in Svizzera"]},"Testimonial":{"Awards":["Premi"],"Customers":["Clienti"],"Featured":["In evidenza"],"Go to testimonial source":["Vai alle testimonianze"],"Reviews":["Recensioni"],"Videos":["Video"]},"Text":{"Find the plan that's right for you":["Trova il piano che fa per te"],"If you need help, check out our ${ supportLink }.":["Se ti serve assistenza dai un’occhiata alla nostra ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["La pagina che stai cercando potrebbe essere stata rimossa, o il link potrebbe essere vecchio."]},"Title":{"On this page":["In questa pagina"],"Related articles":["Articoli correlati"],"Share ${ thisPage }":["Condividi ${ thisPage }"],"Thank you!":["Grazie"],"this page":["questa pagina"]},"Tooltip":{"More information":["Ulteriori informazioni"]},"tooltip_calendar":{"Create up to 20 custom & shareable encrypted calendars. On top of that, add up to 5 calendars from friends, family, colleagues, and organizations.":["Puoi creare fino a 20 calendari cifrati personalizzati e condivisibili. Puoi inoltre aggiungere fino a 5 calendari di amici, familiari, colleghi e organizzazioni."]},"tooltip_vpn":{"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, highest VPN speed, ${ TOTAL_VPN_CONNECTIONS } VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Accedi a contenuti bloccati e naviga in modalità privata. Il piano include più di ${ TOTAL_SERVERS } server in oltre ${ TOTAL_COUNTRIES } Paesi, massima velocità della VPN, ${ TOTAL_VPN_CONNECTIONS } connessioni alla VPN, servizi di streaming in tutto il mondo, anti-malware, ad-blocker e altro ancora."],"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, highest VPN speed, 10 VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Accedi a contenuti bloccati e naviga in modalità privata. Il piano include più di ${ TOTAL_SERVERS } server in oltre ${ TOTAL_COUNTRIES } Paesi, massima velocità della VPN, 10 connessioni alla VPN, servizi di streaming in tutto il mondo, anti-malware, ad-blocker e altro ancora."]},"version_history_label":{"Version history":["Cronologia delle versioni"]},"version_history_tooltip":{"Store up to ${ versionHistoryNumber } versions of each file for up to ${ years } years":["Conserva fino a ${ versionHistoryNumber } versioni di ciascun file fino a un massimo di ${ years } anni"]},"vpn_features_link":{"View VPN plans":["Visualizza i piani VPN"]},"vpn_features_useCase":{"Access blocked content and browse privately":["Accedi ai contenuti bloccati e naviga in modalità privata"]}}},"unleashApi":"https://account.proton.me/api"};
// We need to import data (the framework context) from the server
// This Astro feature with define:vars works well but creates an inline script
// So we can't directly import the initFramework helper, we have to store the context
window.frameworkContext = frameworkContext;
})();
How data recovery works with end-to-end encryption | Proton
Proton’s mission is to build a better internet where privacy is the default. To do that, we’ve built all our services around end-to-end encryption. This type of encryption makes it impossible for anyone to access your information besides you and the people you share it with. Whether you’re using Proton Mail (our encrypted email service), Proton Drive (our encrypted file storage service), or any of our other services, your data is encrypted on your device before it reaches our servers, meaning not even we can access your data.
This is good for your privacy but can make data recovery difficult if you forget your password. Most other services can restore your data to your account because they can easily access it whenever they want. This isn’t an option at Proton. Any recovery system we use must maintain your privacy, which means we must develop recovery methods that are compatible with end-to-end encryption and prevent our servers from ever having access to your information. This is an additional difficulty that most other online services don’t need to worry about, but we view it as an integral part of building an internet where privacy is the default.
Making it possible to recover data if you forget your password is one of the toughest technical challenges presented by our use of end-to-end encryption, and we had to develop several innovative solutions. We rolled these technologies out some time ago, but many people have asked us how they work, so today we’re explaining how we enable data recovery with end-to-end encryption.
Why is data recovery technically difficult?
To protect your privacy Proton uses multiple layers of encryption. Security at Proton starts with account authentication. We use a protocol known as Secure Remote Password (SRP), which mutually authenticates both the user and server without ever sending any password-equivalent data over the network. Authentication attempts cannot be replayed, and the protocol remains secure even if a third party is actively trying to tamper with it. Proton was one of the first organizations to adopt SRP(new window) at scale, and we’ve made a number of implementation improvements to make SRP even more secure.
This system prevents anyone, including Proton, from being able to decrypt or access your encryption keys (and consequently your data) without your password. However, using SRP means that password resets also reset your encryption keys. When you generate a new password, you generate new encryption keys that are encrypted using a secret derived from your new password. Since your original encryption key(s) are still encrypted using your original password, they can’t be decrypted without your old password. If your original encryption key(s) can’t be decrypted, they can’t be used, and all the data that was encrypted using those key(s) can’t be decrypted either.
To recover your data, we would need one of the following two things:
Your original password that was used to encrypt your original account key
A backup of your original account key
Since we cannot store your password without invalidating our privacy protections (and since it’s unlikely anyone will remember a password once they’ve forgotten it), another solution is required.
Recovering end-to-end encrypted data after a password reset
Proton’s innovative data recovery system works around the problem we just described by enabling you to easily create two types of backups of your encryption keys:
Recovery phrase
Recovery file
We will explain each of the following methods in greater detail below.
These methods ensure that your encryption keys are protected so that only you can use them and that Proton servers never have access to them. This way, we don’t compromise the core end-to-end encryption promise behind our services, such as Proton Mail, Proton Drive, etc.
Recovery phrase
When you create a Proton account, we automatically generate a recovery phrase that makes it possible to recover your encrypted data if you ever lose your password. Your recovery phrase is essentially a second password used to encrypt a copy of your encryption key. When you reset your account password using your recovery phrase, you don’t lose any data because you’re decrypting a backup copy of your encryption key.
Because recovery phrases act as a secondary password (and because it allows you to bypass 2FA to change your password and access your account), you must store your recovery phrase in a secure, secret location.
Generation of the recovery phrase
Proton uses the following process when generating a new recovery phrase:
The Proton client on your device generates random bytes using a cryptographically secure pseudo-random number generator.
The Proton client uses the random bytes to encrypt the account keys.
The Proton client sends the encrypted account keys to the Proton server.
The Proton client uses a simplified Bip39 implementation(new window) to generate a recovery phrase made up of English words from the random bytes.
The recovery phrase is generated entirely by the Proton client on your device and is never stored on the server. To let the recovery phrase grant access to your account, we store a verifier of the recovery phrase on the server that allows us to validate it without knowing its content.
Data recovery using the recovery phrase
Once you’ve generated and stored your recovery phrase, you can recover all your data if you ever lose your password. Upon entering your recovery phrase, the following takes place:
The Proton server validates the recovery phrase using an SRP 6a verifier. This doesn’t leak the recovery phrase to the server. If the verification is successful, the server returns the backup account key that was encrypted using the recovery phrase.
The Proton client on your device uses Bip39 to get the random bytes from the recovery phrase.
The Proton client decrypts the backup account key copy using the random bytes.
When you set a new password, the Proton client then re-encrypts the account key using your new account password and uploads it to the server.
Because we don’t generate any new encryption keys during this process, any data recovery methods implemented before the password reset remain usable. You can use this procedure with all Proton apps (for example, Proton Mail, Proton Drive, etc.) using the password reset/account recovery feature.
Recovery file
You can also have Proton generate a recovery file that you download. This recovery file is a local encrypted backup of your encryption key. It can be used to recover any data encrypted with your original encryption key. The best way to illustrate how the recovery file works is by comparing it to the account password.
The account password is the "client secret" used to encrypt your encryption key. The encryption key is then stored on the Proton server.
For the recovery file, this relationship is reversed.
The Proton server holds the secret used to encrypt your recovery file. The recovery file is then stored on your device and never seen by our servers.
The Proton server can’t obtain your encryption key without the recovery file. Furthermore, because the recovery file itself is encrypted, even if an attacker obtains your recovery file, they can’t use it to access your encryption keys. Finally, since the encrypted recovery file has no identifier, the attacker can’t automatically find which account it belongs to.
Generation of the recover file
When Proton generates a recovery file, the following occurs:
The Proton client on your device generatesrandom bytes using a cryptographically secure pseudo-random number generator. These random bytes serve as the secret.
The Proton client signs the secret using your encryption key.
The Proton client uses the secret to encrypt a backup copy of your encryption key.
The secret with the signature is uploaded to the Proton server. The signature ensures that the client-generated secret isn’t tampered with and that the server never changes it.
The Proton client exports the encrypted backup copy of your encryption key as an ASC file. This is your recovery file.
Data recovery using the recovery file
If you plan on using this method, you should generate a recovery file as soon as possible to ensure you can recover all your data. The following occurs when you use a recovery file to recover your data:
You import your recovery file to the Proton client on your device.
The Proton client attempts to decrypt the file using the signed secret from Proton’s server. Once the file is decrypted, the Proton client will have access to a backup copy of your encryption key, which it can use to recover your data.
Making privacy easy to use
Our goal is to make Proton services as easy to use as the competing services from Big Tech. We believe that everybody has the right to privacy and that services that protect your privacy should be easy to use and full of helpful features. This has been Proton’s approach since the very beginning.
Our innovative recovery methods give you the same data recovery possibilities as Big Tech’s non-private services while still protecting your data with Proton’s end-to-end encryption that ensures nobody other than you can access it. As always, let us know if you have any thoughts or comments, as we’re here to serve you and build the services you want.
Secure, seamless communication is the foundation of every business. As more
organizations secure their data with Proton, we’ve dramatically expanded our
ecosystem with new products and services, from our password manager to Dark Web
Monitoring for cr
On the subject of cybersecurity, one term that often comes up is brute force
attack. A brute force attack is any attack that doesn’t rely on finesse, but
instead uses raw computing power to crack security or even the underlying
encryption.
In this a
Section 702 of the Foreign Intelligence Surveillance Act has become notorious as
the legal justification allowing federal agencies like the NSA, CIA, and FBI to
perform warrantless wiretaps, which sweep up the data of hundreds of thousands
of US citi
In response to the growing number of data breaches, Proton Mail offers a feature
to paid subscribers called Dark Web Monitoring. Our system checks if your
credentials or other data have been leaked to illegal marketplaces and alerts
you if so. Often
Your email address is your online identity, and you share it whenever you create
a new account for an online service. While this offers convenience, it also
leaves your identity exposed if hackers manage to breach the services you use.
Data breaches
Our mission at Proton is to help usher in an internet that protects your privacy
by default, secures your data, and gives you the freedom of choice.
Today we’re taking another step in this direction with the launch of our open
source password manage