[erlang-questions] blowfish cbc mode decrypt

[Radoslaw Gruchalski]

You say your data is:
<<IvSpec>> == <<RandomIv>>
But you read:
Is your data <<IvSpec:8/binary, IV:8/binary, Rest/binary>>
Should it not be just:
<<IV:8/binary, Rest/binary>>
?

Sent from Outlook

    _____________________________
From: Bogdan Andu <bog495@REDACTED>
Sent: Thursday, November 5, 2015 2:26 p.m.
Subject: [erlang-questions] blowfish cbc mode decrypt
To: Erlang <erlang-questions@REDACTED>


                                                                               Hi,            
            
           I have a stream of data called EncryptedData (with randomiv header specification).           
I want to decrypt  using:           
crypto:block_decrypt(blowfish_cbc, hexstr2bin(Key), IV, Rest).           
           
                               where:           
                               
EncryptedData is formatted as follows:           
          <<IvSpec:8/binary, IV:8/binary, Rest/binary>>          
          
         IvSpec == <<"RandomIV">>         
         
        However the decryption does not works and garbage is generated        
                      (the function  ) .        
                      
       What could be done given the fact that IV is an 8-byte quantity       
      the Key is formatted according to crypto test suites and is 16 bytes long       
      
     Am I missing something?     
     
    Thanks,    
    
   Bogdan
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