Hva er LOCKER-filformatet?
En .locker-fil er et kryptert arkiv opprettet av NordLocker, filkrypteringsappen fra Nord Security, selskapet bak NordVPN. Appen ble lansert i november 2019. Hver .locker-fil er en beholder som inneholder én eller flere filer og mapper du har lagt til i et arkiv, forseglet sammen som krypterte data.
NordLocker krypterer alt på enheten din før det sendes videre, en tilnærming selskapet kaller «zero-knowledge»-kryptering. Under panseret kombinerer den AES-256 med chifferet XChaCha20-Poly1305, genererer nøkler med Libsodium, og utleder din hemmelige nøkkel fra hovedpassordet ditt ved hjelp av Argon2-funksjonen. Resultatet er en fil som ser ut som tilfeldige bytes for alle uten passordet.
Sikkerhet og trygghet
RISIKO: LOWA .locker file is encrypted data and does not run code on its own, so the file itself is safe to store or move. The real risk is losing access: without the correct master password the contents cannot be recovered, since NordLocker uses zero-knowledge encryption and cannot reset it for you. Only install NordLocker from nordlocker.com to avoid fake or tampered clients.
Formatdetaljer
i et nøtteskall- App / game lock files - Some applications and games write a plain lock or state file named with a .locker extension to mark a resource as in use; unrelated to NordLocker encryption.
- Ransomware output - Certain ransomware families rename hostage files with a .locker suffix. These are not NordLocker archives and cannot be opened by it.
Programmer som åpner LOCKER-filer
Tekniske detaljer
dyp spesifikasjon| Encoding | Proprietary encrypted container |
| Container | Single encrypted archive holding one or more files and folders imported into a locker |
| Compression | None documented; the format is built for encryption rather than size reduction |
| Encryption | AES-256 (AES-256-GCM) for file data combined with XChaCha20-Poly1305; key wrapping uses the user's master password |
| Key Derivation | Argon2 derives the secret key from the salted, hashed master password |
| Signing | Ed25519 (EdDSA) used for authentication within the scheme |
| Asymmetric | 4096-bit RSA and elliptic-curve cryptography (ECC) used in the key hierarchy |
| Crypto Library | Libsodium generates a random 256-bit key that is then encrypted with XChaCha20-Poly1305 |
| Architecture | Client-side, zero-knowledge encryption; files are encrypted on the device before any cloud sync |
| Typical size | Varies with the imported content, from kilobytes to many gigabytes |
| Structure | A locker is an encrypted folder-like container. Files and folders are added into it, and the whole locker is stored and synced as encrypted data. |
| Integrity | Poly1305 authentication tags protect against tampering and corruption |
| Platforms | Windows, macOS |
| Notes | NordLocker pairs local encryption with optional end-to-end encrypted cloud storage. Free accounts include a set amount of cloud space; larger quotas require a paid plan. The password is required to decrypt; there is no vendor recovery of forgotten master passwords. |
| Utgitt | 2019 |
| Spesifikasjon | en.wikipedia.org |
LOCKER-konverteringer
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