Hi there! I'm looking into using Crypto++ for an open source project I contribute to. We need to implement a function which encrypts/decrypts some data using the AES-CTR or AES-CBC method (the CTR/IV is provided), and then return the encrypted data and **the new CTR/IV to be used if the crypto operation is to continue, as if done as a whole block**. For example if the input CTR is 0 and I encrypted a 32-byte data, I would need to return the new CTR 2.
Actually, calculating the CTR myself is easy, but I don't think there would be an easy way to calculate the IV for AES-CBC. So I wonder if Crypto++ provides a way to fetch the new CTR/IV after crypto operations? I can see some "GetNextIV()" function in the document but I don't think that would satisfy my need as it seems to use a RNG. -- You received this message because you are subscribed to "Crypto++ Users". More information about Crypto++ and this group is available at http://www.cryptopp.com and http://groups.google.com/forum/#!forum/cryptopp-users. --- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to cryptopp-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
