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anyone know what cipher has been use to encrypt this?

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#1 hannahhhhhh_x


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Posted 03 March 2017 - 01:18 PM



I've been given a decryption key 'Cyb3r_fish'

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#2 Didier Stevens

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Posted 04 March 2017 - 12:26 PM

I don't know.


It is a hexadecimal string.


And its entropy is 7.34 when decoded. Strong encryption has an entropy around 7.9.

It is a short string, so the calculated entropy is less reliable as an indicator.


The entropy corresponds more to that of compression. But I don't recognize what compression it could be.


There are a lot of byte values missing. Out of the 256 possible values, 184 are present.


I also tried XOR decoding with the key you gave, but that didn't work.

And because of the fish in the key, I tried Blowfish too.

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#3 Crazy Cat

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Posted 04 March 2017 - 07:00 PM

Cryptanalysis. http://practicalcryptography.com/cryptanalysis/text-characterisation/identifying-unknown-ciphers/

FindCrypt2 for IDA. http://www.hexblog.com/?p=28

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