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- https://github.com/synrc/n2o/blob/master/src/services/n2o_secret.erl
- pickle(Data) ->
- Message = term_to_binary({Data,now()}),
- Padding = size(Message) rem 16,
- Bits = (16-Padding)*8, Key = secret(), IV = crypto:rand_bytes(16),
- Cipher = crypto:block_encrypt(aes_cbc128,Key,IV,<<Message/binary,0:Bits>>),
- Signature = crypto:hmac(sha256,Key,<<Cipher/binary,IV/binary>>),
- base64:encode(<<IV/binary,Signature/binary,Cipher/binary>>).
- secret() -> wf:config(n2o,secret,<<"ThisIsClassified">>).
- depickle(PickledData) ->
- try Key = secret(),
- Decoded = base64:decode(wf:to_binary(PickledData)),
- <<IV:16/binary,Signature:32/binary,Cipher/binary>> = Decoded,
- Signature = crypto:hmac(sha256,Key,<<Cipher/binary,IV/binary>>),
- {Data,_Time} = binary_to_term(crypto:block_decrypt(aes_cbc128,Key,IV,Cipher),[safe]),
- Data
- catch E:R -> wf:info(?MODULE,"Depicke Error: ~p",[{E,R}]), undefined end.
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