1Password vs Proton Pass Comparison

• Individual (annual): $47.88/year
• Families (up to 6 users, annual): $71.88/year

• Pass Plus (individual, annual): $35.88/year
• Pass Family (up to 6 users, annual): $59.88/year

Penetration test and code review of the 1Password system

Source-code review and gray-box testing of the browser extensions, mobile and desktop apps, and CLI

Data is encrypted with AES-GCM-256. The vault key is derived from your account password using PBKDF2-HMAC-SHA256 at 650,000 iterations, then combined with a 128-bit Secret Key that never leaves your devices — so an attacker who guesses the password alone still cannot decrypt anything. Authentication uses SRP, so password-equivalent data is never sent to the server.

Vault and item data are encrypted with 256-bit AES-GCM under 32-byte random keys; the user key is protected by a bcrypt hash of the account password. Authentication uses a hardened SRP implementation; sharing uses OpenPGP with ECC (Curve25519). Every field is encrypted client-side — usernames, URLs and notes included — so Proton cannot see which services you hold accounts with. Offline access on paid plans uses Argon2 for the local hash.

AgileBits Inc., a Canadian company headquartered in Toronto, Ontario. Venture-funded — Accel and ICONIQ Growth both hold board seats. Founded 2005; roughly 1,400 employees.

Proton AG, Geneva, Switzerland. Since June 2024 the primary shareholder is the non-profit Proton Foundation, which the founders endowed with Proton shares in an arrangement they describe as irrevocable. Proton began as a 2014 crowdfunding campaign.