Home Text lock
Text lock
Locks text with AES-256-GCM. The password is stretched with PBKDF2 for 210000 rounds.
Lock the note. The same note and password still make a new cipher each time.
Shorter than 12 characters. A short password is easy to guess.
Cipher
AES-256-GCM, PBKDF2-SHA256, 210000 rounds. A lost password cannot be recovered.
Why this exists
An account number left in a chat leaves with the chat. A locked string shows nothing without the password.
Locking and opening finish in this browser. The password is not stored anywhere.
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01How to use it
Note / Password. 210000 PBKDF2, AES-256-GCM.
Lock → K1. Open.
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02What you get
110-234-567890 → K1. AES-256-GCM PBKDF2 210000.
12 Shorter than 12 characters. A short password is easy to guess.
Entered110-234-567890
AES-256-GCM PBKDF2 210000 110-234-567890 K1. 12 Shorter than 12 characters. A short password is easy to guess. K1. The password differs, or the cipher is damaged. -
03Worth knowing
AES-256-GCM, PBKDF2-SHA256, 210000 rounds. A lost password cannot be recovered.
K1. / AES-256-GCM / PBKDF2 / 210000 / 12 / 110-234-567890.
Questions
- QAES-256-GCM?
- AAES-256-GCM. PBKDF2 210000.
- Q12?
- AShorter than 12 characters. A short password is easy to guess.
- Q110-234-567890?
- A110-234-567890 → K1.
- QK1.?
- AThe password differs, or the cipher is damaged.
How this page works it out
Text is locked with AES-256-GCM, and the password is stretched into a key by PBKDF2-SHA256 for 210000 rounds. The sample note 110-234-567890 becomes a cipher that starts with K1., and the same note with the same password still produces a different string each time.
A password shorter than 12 characters only raises a warning; the lock still runs. A lost password cannot be recovered. A cipher that is too short or in another format is refused, and a wrong password looks the same as a damaged string.
Locking and opening finish in this browser. The note and the password are not sent to a server and are not stored. Keeping the cipher and the password in the same place removes the point of the lock.