Wow, the AES/GCM implemetation is super-complicated!
1) There are two such strings declared at the beginning:
-------------------------------------------------
string adata( 16, (char)0x00 );
string pdata( 16, (char)0x00 );
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What each of them is ment for?
2)
------------------------------------------------------------------------------------
// AuthenticatedEncryptionFilter::ChannelPut
// defines two channels: "" (empty) and "AAD"
// channel "" is encrypted and authenticated
// channel "AAD" is authenticated
ef.ChannelPut( "AAD", (const byte*)adata.data(), adata.size() );
ef.ChannelMessageEnd("AAD");
// Authenticated data *must* be pushed before
// Confidential/Authenticated data. Otherwise
// we must catch the BadState exception
ef.ChannelPut( "", (const byte*)pdata.data(), pdata.size() );
ef.ChannelMessageEnd("");
------------------------------------------------------------------------------------
The question is: which channel is ment for the data your need to encrypt,
and which is for authentification data? They are both called "Authenticated
data"... And again, adata and pdata are here without an explanation...
3) Is it possible to do without strings, using SecByteBlocks and arrays?
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