Re: Crypto: Ccm

Red Cryptocoryne Care

CCM puts together two different modes of operation (at least in the name). Does it mean data is encrypted using counter mode and then encrypted using CBC; kind of a double encryption? Free download apple mac hard drive cleanup software for mac.

Red Cryptocoryne

With the, you authenticate your data first using which is, well, basically on the data to be authenticated. Now on the combination of ciphertext and tag you apply the to conceal the contents. While you do 'double-encryption' here, you only send the full result of the CTR mode and only the very last block from the CBC mode (encrypted using CTR). The latter one is the tag with which the recipient can verify the integrity of the message.