no key
- lockedFastened with a mechanism
- keylessWithout traditional opener
- stuckUnable to move
- deniedRefused or disavowed
- accessRight to enter
entry · blocked · shut · closed · barrier · combination · code · password · forgotten · lost · jammed · doorway · padlock · deadbolt · stranded · lockout · bypass · sealed
no keyencryption key
Data-scrambling secret string
private key · public key · decryption key · authenticated · encrypted