KeeChallenge regenerates the XML file (generates a new random challenge C, calculates the new response R, encrypts S using R', and stores the updated C and S enc to the XML file)įor more detail, please check the full workflow diagram.Importantly, this is the same secret as the one stored in YubiKey. The decrypted secret S is used for decrypting the database.The response R is used for decrypting the secret S enc stored in the XML file.The YubiKey transforms the challenge (using the secret S stored in the key) and returns a response R.KeeChallenge loads the challenge C from the XML file and sends it to the YubiKey.Additionally, KeeChallenge encrypts the S with the pre-calculated challenge-response pair, and stored the encrypted secret and challenge in an auxiliary XML file. This key is stored in the YubiKey and is used for generating responses. KeeChallenge encrypts the database with the secret HMAC key ( S). YubiKey adds another layer of protection to your database: in order to decrypt the file, the owner has to present their physical YubiKey. ![]() KeeChallenge is a plugin that adds YubiKey support to KeePass 2. KeeChallenge for YubiKey, and why you should avoid it # yubikey
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