CODEWITHSUNDEEP
encryption
JK9
JK9

Reputation: 380

Decrypt file without extension

I had given an assignment to decrypt a file called Q3_encrypted and a AES secret key for the file. However,there is no extension for this file so how can i determine the file type of this file. The lecturer ask us to figure out ourselves but i have no idea how to start? Can someone give me some idea?

Upvotes: 0

Views: 2006

Answers (1)

MooseBoys
MooseBoys

Reputation: 6793

Applications generally look for a special signature when loading a specific file type. If the entire file is encrypted, however, the signature will not be present. Instead, look for signs of common encryption techniques such as the trailing "=" often found in Base64-encrypted strings.

Edit: If you already have a key and know it's AES, have you tried using it as the decode key?

Upvotes: 1

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