In cryptography, a weak key is a key, which, used with a specific cipher, makes the cipher behave in some undesirable way. Weak keys usually represent a very small fraction of the overall keyspace, which usually means that, if one generates a random key to encrypt a message, weak keys are very unlikely to give rise to a security problem. Nevertheless, it is considered desirable for a cipher to have no weak keys. A cipher with no weak keys is said to have a flat, or linear, key space.
Read more about Weak Key: Historical Origins, Weak Keys in DES, List of Algorithms With Weak Keys, No Weak Keys As A Design Goal
Famous quotes containing the words weak and/or key:
“She’s in the house.
She’s at turn after turn.
She’s behind me.
She’s in front of me.
She’s in my bed.
She’s on path after path,
and I’m weak from want of her.
O heart,
there is no reality for me
other than she she
she she she she
in the whole of the reeling world.
And philosophers talk about Oneness.”
—Amaru (c. seventh century A.D.)
“Woe to you lawyers! For you have taken away the key of knowledge; you did not enter yourselves, and you hindered those who were entering.”
—Bible: New Testament, Luke 11:52.