[erlang-questions] Problem with legacy code when upgrading to R16B03

[Felix Gallo]

I made your same changes to the module, and also added the following
function to the module:

test() ->
  Key = <<1:128>>,
  Data = <<1:128>>,
  generate_tag_aes_cbc_128(Key, Data).

and when run in a shell:

Eshell V6.1  (abort with ^G)
1> c(omac1),l(omac1),omac1:test().
<<173,219,62,66,7,255,149,96,196,74,41,116,238,229,211,35>>

this appears to work (at least, it doesn't crash with badarg.  I don't know
whether the data is correct).  Are you sure your aes key is 128, 192, or
256 bits long?  It's possible the crypto module is throwing badarg when it
detects an improper length key.

On Tue, Feb 17, 2015 at 3:27 PM, Ryan Brown <ryankbrown@REDACTED> wrote:

> Thank you Felix. It looks like the aes_cbc_128_encrypt method is gone so I
> changed all to use crypto:block_encrypt(aes_cbc128, Key, IV, ToBeEncrypted)
>
> But alas, I'm still seeing the same error.
>
> On Tue, Feb 17, 2015 at 3:10 PM, Felix Gallo <felixgallo@REDACTED> wrote:
>
>> I'm not super familiar with the crypto library, but it looks like its
>> function signatures changed significantly between 15B01 and 16B03.  In
>> particular, it appears that some of the functions you are calling are no
>> longer in the library, and have been replaced with equivalents.
>>
>> I suggest opening
>>
>> http://erldocs.com/R15B01/crypto/crypto.html
>>
>> and
>>
>> http://erldocs.com/R16B03/crypto/crypto.html
>>
>> and seeing if you can figure out where the changes occurred.  I suspect
>> those are the cause of your badargs.
>>
>> F.
>>
>> On Tue, Feb 17, 2015 at 1:55 PM, Ryan Brown <ryankbrown@REDACTED> wrote:
>>
>>> Hello all,
>>>
>>> I am in the process of upgrading a legacy application from R15B01 to
>>> R16B03 in order to get SHA 384 support. However, I am getting an error
>>> creating my CMAC from the library located here:
>>>
>>> https://github.com/PearsonEducation/subpub/blob/master/src/omac1.erl
>>>
>>> For the life of me I cannot find the root cause. I am just receiving a
>>> badarg error pointing to line 74.
>>>
>>> Any guidance would be greatly appreciated.
>>>
>>> Thank you.
>>>
>>>
>>>
>>> _______________________________________________
>>> erlang-questions mailing list
>>> erlang-questions@REDACTED
>>> http://erlang.org/mailman/listinfo/erlang-questions
>>>
>>>
>>
>
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