CODEWITHSUNDEEP
encryptionaes
Ralf Keller
Ralf Keller

Reputation: 92

Encrypt AES key?

Consider this scenario:

Key1 = random key
Key2 = random key
CombinedKey = Key1.encrypt (Key2)

Input = "test"
Step1 = CombinedKey.encrypt (Input)
Step2 = key2.decrypt (step1)
Result = key1.decrypt (step2)

Is Result == "test" if the encryption type is AES? Or for any other encryption algorythm?

Upvotes: 2

Views: 62

Answers (1)

David Hoelzer
David Hoelzer

Reputation: 16331

No. AES is not a group. For simplicity's sake, let's just say it this way: AES encryption is not commutative. Said another way, since AES is not a group, there is no key X such that encrypting with key Y and then key Z, key X can decrypt in one step. There are no shortcuts.

If you encrypt Input with CombinedKey then only CombinedKey will decrypt it. Using key2 to decrypt Step1 will result in only junk, not an intermediate result.

Upvotes: 2

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