Security and privacy

Find out how 1Password keeps your data safe and secure from prying eyes. Security so strong, even we can't see your secrets.


Master Password and Secret Key

  • About your Secret Key

    Your Secret Key keeps your 1Password account safe by adding another level of security on top of your Master Password.

  • How to choose a good Master Password

    Use the 1Password password generator to make sure that your Master Password is unique, random, and memorable.

1Password data formats

  • About the OPVault format

    Learn how the OPVault format improves upon the design of the Agile Keychain format.

  • OPVault design

    Learn about the design of the OPVault format, used by default when syncing with iCloud or Dropbox.

1Password features

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