all-in-one privacy solution":["O Proton Unlimited é uma solução única de privacidade"],"Black Friday":["Black Friday"],"No ads. Privacy by default.":["Sem anúncios. Privacidade por padrão."],"People before profits":["Pessoas acima do lucro"],"Security through transparency":["Segurança por meio da transparência"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["As melhores ofertas de ${ BLACK_FRIDAY } do Proton Mail"],"The world’s only community- supported email service":["O único serviço de e-mail do mundo apoiado pela comunidade"]},"specialoffer:limited":{"${ hours } hour":["${ hours } hora","${ hours } horas"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["${ hoursLeft }, ${ minutesLeft }, e ${ secondsLeft } restantes"],"${ minutes } minute":["${ minutes } minuto","${ minutes } minutos"],"${ seconds } second":["${ seconds } segundo","${ seconds } segundos"],"Limited time offer":["Oferta por tempo limitado"]},"specialoffer:listitem":{"Create multiple addresses":["Crie vários endereços"],"Hide-my-email aliases":["Use aliases do hide-my-email"],"Quickly unsubscribe from newsletters":["Cancele a assinatura de newsletters rapidamente"],"Use your own domain name":["Use seu próprio nome de domínio"]},"specialoffer:logos":{"As featured in":["Destaques"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Obtenha um e-mail criptografado que proteja sua privacidade"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Oferta de Black Friday do Proton Mail - Até 40% de desconto"]},"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.":["Obtenha até 40% de desconto nas assinaturas do Proton Mail nesta Black Friday. Confira ótimas ofertas em nossos planos de e-mail seguro com criptografia de ponta a ponta."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Oferta de Black Friday do Proton Mail - Até 40% de desconto no e-mail protegido"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Com o preço de ${ TOTAL_SUM } no primeiro ano"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Com o preço de ${ TOTAL_SUM } nos primeiros dois anos"],"30-day money-back guarantee":["Garantia de reembolso de 30 dias"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Com o preço de ${ TOTAL_SUM } nos primeiros dois anos"],"Billed at ${ TOTAL_SUM } for the first year":["Com o preço de ${ TOTAL_SUM } no primeiro ano"],"You save ${ SAVE_SUM }":["Economize ${ SAVE_SUM }"]},"specialoffer:off":{"${ DISCOUNT } off":["-${ DISCOUNT }"],"${ PERCENT_OFF } off":["-${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Adoro ProtonMail"],"My favorite email service":["Meu serviço favorito de e-mail"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Agradecemos ao Proton por nos manter a salvo no complicado universo da 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":["Você recebe pelo que paga. No caso das grandes tecnologias, você se acostuma quando não paga nada. Parei de usar o Gmail e troquei para o @ProtonMail"]},"specialoffer:time":{"Days":["Dias"],"Hours":["Horas"],"Min":["Min"]},"specialoffer:title":{"And much more":["E muito mais"],"Make your inbox yours":["Deixe a caixa de entrada do seu jeito"],"Safe from trackers":["A salvo de rastreadores"],"Stay organized":["Mantenha-se organizado"],"Black Friday email deals":["Ofertas de e-mail da Black Friday"],"Don’t just take our word for it":["Não confie apenas em nossa palavra"],"Our story":["Nossa história"],"Transfer your data from Google in one click":["Transfira seus dados do Google com um clique"]},"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.":["Acesse conteúdo bloqueado e navegue com privacidade. Inclui ${ TOTAL_SERVERS } servidores em +${ TOTAL_COUNTRIES } países, conecte até 10 dispositivos, acesse serviços de streaming do mundo todo, malware e bloqueador de anúncios e muito mais."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Compartilhe facilmente seus calendários com amigos, familiares ou colegas e visualize calendários externos."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Inclui suporte para 1 domínio de e-mail personalizado, 10 endereços de e-mail, 10 aliases do hide-my-email, compartilhamento de calendário e muito mais."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Inclui suporte para 3 domínios de e-mail personalizados, 15 endereços de e-mail, aliases ilimitados do hide-my-email, compartilhamento de calendário e muito mais."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Gerencie até 25 calendários, apps para dispositivos móveis, protegidos com criptografia de ponta a ponta, importação de calendário com 1 clique do Google e muito mais."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["No momento estamos enfrentando problemas com o serviço Proton VPN"],"Learn more":["Saiba mais"]},"Status banner":{"Learn more":["Saiba mais"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["No momento, estamos com problemas no serviço ${ issues[0] }."],"We are experiencing issues with one or more services at the moment.":["No momento, estamos com problemas em um ou mais serviços."]},"suggestions":{"Suggestions":["Sugestões"]},"Support":{"Sub category":["Subcategoria","Subcategorias"]},"Support article":{"${ readingTime } min":["${ readingTime } min","${ readingTime } min"],"Category":["Categoria","Categorias"],"Didn’t find what you were looking for?":["Não encontrou o que procura?"],"General contact":["Contato geral"],"Get help":["Obter ajuda"],"Legal contact":["Contato jurídico"],"Media contact":["Contato de mídia"],"Partnerships contact":["Contato de parcerias"],"Reading":["Leitura"]},"Support categories":{"Browse Proton product support":["Navegar pelo suporte a produtos da Proton"]},"Support category":{"There is no article in this category yet.":["Ainda não há nenhum artigo nesta categoria."]},"Support troubleshooting":{"--- Select ---":["--- Selecionar ---"],"App version":["Versão do aplicativo"],"Browser":["Navegador"],"Check if this helps":["Confira se isso ajuda"],"Choose a category for your question":["Escolha uma categoria para sua pergunta"],"Choose a product":["Selecione um produto"],"Did this solve your issue ?":["Isso resolveu seu problema?"],"Faster assistance is just a few clicks away — please make your selections":["Assistência mais rápida está a apenas alguns cliques de distância — faça suas seleções"],"No, contact support":["Não, entrar em contato com o suporte"],"Proton account":["Conta 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":["Agradecemos pelo feedback"],"Troubleshooting":["Solução de problemas"],"What can we help with ?":["Como podemos ajudar você?"],"Yes":["Sim"]},"support_modal_search_query":{"Search query":["Consulta de pesquisa"]},"support_search_button":{"Search":["Pesquisar"]},"support_search_i_am_looking_for":{"I'm looking for":["Estou procurando"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Para uma resolução mais rápida, informe o problema no aplicativo Bridge: Ajuda > Comunicar um problema."],"Information":["Informações"]},"SupportForm:option":{"Account Security":["Segurança da conta"],"Contacts":["Contatos"],"Custom email domain":["Domínio de e-mail personalizado"],"Email delivery and Spam":["Entrega de e-mail e spam"],"Encryption":["Criptografia"],"Login and password":["Início de sessão e senha"],"Merge aliases and accounts":["Combinar alias e contas"],"Migrate to Proton":["Migrar para a Proton"],"Notifications":["Notificações"],"Other":["Outros"],"Plans and billing":["Planos e faturamento"],"Proton for Business":["Proton for Business"],"Sign up":["Criar conta"],"Storage":["Armazenamento"],"Users, addresses, and identities":["Usuários, endereços e identidades"]},"SupportForm:optionIntro":{"Select a topic":["Selecione um tópico"]},"swiss_baseed_feature":{"Swiss based":["Sediado na Suíça"]},"Testimonial":{"Awards":["Prêmios"],"Customers":["Clientes"],"Featured":["Em destaque"],"Go to testimonial source":["Ir para a página inicial de depoimentos"],"Reviews":["Avaliações"],"Videos":["Vídeos"]},"Text":{"Find the plan that's right for you":["Encontre o plano certo para você"],"If you need help, check out our ${ supportLink }.":["Se precisar de ajuda, confira nossa ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["É possível que a página que você está procurando tenha sido removida ou seja um\nlink antigo."]},"Title":{"On this page":["Nesta página"],"Related articles":["Artigos relacionados"],"Share ${ thisPage }":["Compartilhar ${ thisPage }"],"Thank you!":["Obrigado!"],"this page":["esta página"]},"Tooltip":{"More information":["Mais informações"]},"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.":["Crie até 20 calendários compartilháveis personalizados e criptografados. Além disso, é possível adicional até 5 calendários de amigos, família, colegas e organizações."]},"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.":["Acesse conteúdo bloqueado e navegue com privacidade. Inclui mais de ${ TOTAL_SERVERS } servidores em mais de +${ TOTAL_COUNTRIES } países, VPN com a mais alta velocidade, ${ TOTAL_VPN_CONNECTIONS } conexões VPN, serviços de streaming no mundo todo, malware e bloqueador de anúncios e muito mais."],"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.":["Acesse conteúdo bloqueado e navegue com privacidade. Inclui mais de ${ TOTAL_SERVERS } servidores em mais de +${ TOTAL_COUNTRIES } países, VPN com a mais alta velocidade, 10 conexões VPN, serviços de streaming no mundo todo, malware e bloqueador de anúncios e muito mais."]},"version_history_label":{"Version history":["Histórico de versões"]},"version_history_tooltip":{"Store up to ${ versionHistoryNumber } versions of each file for up to ${ years } years":["Armazene até ${ versionHistoryNumber } versões de cada arquivo por até ${ years } anos"]},"vpn_features_link":{"View VPN plans":["Visualizar planos de VPN"]},"vpn_features_useCase":{"Access blocked content and browse privately":["Acesse conteúdo bloqueado e navegue com privacidade"]}}},"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;
})();
Proton Pass is an end-to-end encrypted password manager based on the same well-tested encryption that secures the rest of the Proton ecosystem. Proton Pass is unique in that it was designed from the ground up to have a strong focus on privacy and security. It therefore has a more complete encryption model than most other password managers.
Proton Pass doesn’t just encrypt the password field but applies end-to-end encryption to all fields, including usernames, web addresses, and all data contained in the encrypted notes section.
This means Proton Pass prevents anyone, including Proton itself, from knowing which online services you subscribe to or have accounts with. This information, much like your emails or your browsing history, can reveal a lot about you and must be protected if you want to maintain your privacy.
The design of Proton Pass uses end-to-end encryption, guaranteeing that all cryptographic operations, including key generation and data encryption, are performed locally on your device. This means that your unencrypted data cannot be accessed by Proton or shared with any third parties. Proton servers never have access to your unencrypted keys, data, or credentials, including your Proton Account password.
Data model
Proton Pass enables you to store various types of information securely, including:
Credentials: You can store access credentials to websites or apps, which may include a username or email, a password, and a second-factor authentication code (TOTP).
Notes: You can securely store any information that doesn’t fit in a credential field in this free-form text field, including license numbers, codes, or simple text notes.
Aliases: You can also create email aliases with Proton Pass. This feature enables you to create randomly generated email addresses that you can use in place of your real email addresses for online accounts. This makes it easy to shut down an alias that’s linked to a service that’s breached or begins sending you spam without affecting your other accounts.
Proton Pass stores all these items within a secure vault. Vaults provide a convenient way for you to organize and (in the future) securely share your data.
Encryption model
Proton Pass takes a comprehensive approach to ensuring maximum security and privacy for all user data. All cryptographic operations occur locally on your device, and any data transmitted to the server is always encrypted. Proton never has access to the plaintext keys required to decrypt user data, making it impossible for Proton to decrypt stored data, even if requested by third parties.
Proton Pass also benefits from the same advanced encryption we utilize for authentication in Proton Mail. This includes using a hardened version of the Secure Remote Password (SRP) protocol that offers stronger security guarantees against man-in-the-middle (MITM) attacks. Our implementation means that even an attacker who can arbitrarily read, modify, delay, destroy, repeat, or fabricate messages between Proton and a user in an undetectable fashion is limited to checking only a single password guess per login attempt, which is equivalent to just trying to log in directly. This way, even if Proton is compromised and acts maliciously, password-equivalent information is never revealed.
Each Proton Pass user has an asymmetric user key. Proton Pass encrypts this user key as follows:
Accounts that use a single account password: Proton Pass encrypts the user key with a bcrypt hash of the account password and the account salt.
Accounts that use our multiple account passwords feature: Proton Pass encrypts the user key with a bcrypt hash of the key password and the account salt.
The user key is used to open all shares you can access, meaning it must be secured. The bcrypt password hashing implementation used by Proton Pass is more robust and secure than PBKDF2, which has led to breaches in other password managers.
When you create a vault, Proton Pass generates a 32-byte random vault key. This key is encrypted and signed with your user key, ensuring only you can decrypt the vault key and nobody (not even Proton) can read or create new vault keys. If several users have access to the same vault, Proton Pass will encrypt the vault key with each user’s public user key. This makes it easy to securely share access to vaults.
Once you have access to the vault key, all items in Proton Pass are encrypted using 256-bit AES-GCM.
Item encryption
Each vault can contain multiple items, such as logins, notes, and aliases. When you create a new item, Proton Pass generates a 32-byte random item key. Proton Pass encrypts that item using the newly generated item key, which itself is then encrypted with your vault key. Both the item key and the item data are encrypted using 256-bit AES-GCM.
Whenever you update an item, Proton Pass encrypts the new data using the previously generated corresponding item key. By using individual item keys for each item, Proton Pass lets you share specific items with other users without sharing the vault key, allowing for more fine-tuned access control.
This approach enables Proton Pass to respect the security principle of least privilege by providing the minimum number of cryptographic keys necessary to access only the data shared.
Sharing
The Proton ecosystem already has open-source, publicly audited, and battle-tested secure sharing encryption models for Proton Drive and Proton Calendar, and we’ve leveraged this experience to design Proton Pass. The Proton Pass encryption model enables you to share your vaults with others, and we plan on adding more sophisticated sharing functionalities as Proton Pass evolves. Currently, you must be a vault administrator to share your vault keys.
Sharing encrypted information requires sharing and distributing public keys, which creates the potential for man-in-the-middle (MITM) attacks, specifically the distribution of fake public keys. In addition to user keys, each Proton user has one or more address keys for each email address associated with their account. This address key is a public key linked to a verifiable identity and published in Proton’s Key Transparency system, ensuring they can’t be maliciously modified by an attacker. We’ll share more information about Proton’s Key Transparency system in the future.
If you’re the vault administrator, you can share your vault key and Proton Pass will encrypt it with your recipient’s address key, ensuring only they can access it.
After your intended recipient receives your encrypted vault key, they will validate its signature using your address key. This step verifies that the invitation legitimately came from you. Once the signature has been validated, Proton Pass will encrypt the vault key using your recipient’s user key and store it securely.
Conclusion
Like all Proton services, Proton Pass will be open source upon release. Anyone will be able to consult the source code to verify our security model. As with our other services, Proton Pass will also undergo regular independent security audits and these audit reports will be shared publicly as soon as they are available.
Finally, for interested security researchers, Proton Pass is eligible for Proton’s Bug Bounty program that offers awards of up to $10,000 for the discovery of bugs in Proton’s software.
This work was conducted by Adrià Casajús, Son Nguyen Kim, Carlos Quintana, Daniel Huigens, and Lara Bruseghini from the Proton identity and cryptography teams.
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