key; lock; key (to a problem); clue
to become locked (e.g. of automatic locking)
duplicate key; pass key; master key; skeleton key
lock-opening; lock-picking
key rack; (wall-mounted) key holder; key hook
key success factor; key to success; KSF
section of road that is curved on purpose as a defensive measure
cryptographic key; encryption key
to have the game in one's hands; to hold the key to victory
lock pick; lock-opening tools
private account (esp. on Twitter); account on a social networking service that can only be viewed by approved followers
square bracket; Japanese-style quotation marks
private key (cryptography); secret key
symmetric key cryptography
secret key cryptography; symmetric key cryptography
symmetric key cryptography
Public Key Infrastructure
to have a narrow view of things; (lit.) to peep at the sky through a keyhole
symmetric key cryptography