kdbx has a Type-length-value list of fields in its header. kdb has fixed number of fields taking a fixed number of bytes in its header. 0xB54BFB66 is KeePass 2.x pre-release (alpha & beta) (.The KeePass version this file was created with. kdbx: the part after the End of Header field.Ī. kdb: the part of the file after the header. You now have the final master key, you can finally decrypt the database. Hash the transformed_key to get the final master keyįinal_master_key = sha256(transformed_key) Transformed_key = concat(Master Seed, transformed_key) Transformed_key = sha256(transformed_key)Ĭoncatenate the Master Seed to the transformed_key Transformed_key = AES.encrypt(transformed_key, Transform Rounds) Use this cipher to encrypt the transformed_key Transform Rounds times Initialize the transformed_key value with the composite_key value kdbx files.Ĭreate an AES128-ECB cipher, taking Transform Seed as its seed concatenate all hashed credentials in this order: passphrase, keyfile, WUA.hash all credentials needed (passphrase, key of the keyfile, WUA).concatenate all hashed credentials in this order: keyfile, passphrase.hash all credentials needed (passphrase, content of the keyfile).If you have just one credential, you are done after step 1. Generation depends on supported credentials ( see official info): Generate the master key from the transformed key.Generate the transformed key from the composite key.
Multiple keys must be generated to get the final master key.
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