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Re:How is NSA breaking so much crypto? (2015) by feelix on Saturday December 17, 2016 @03:19AM (#13199852)
I wonder if a good way to go would be to implement standard encryption (AES in most cases), and then take that encrypted payload and encrypt it with your custom code that you designed.

So even if it's actually true, and that you shouldn't roll your own encryption in practice, even if they do break yours they'll still have to get through the AES as well. So it's a no risk addition.

Re:How is NSA breaking so much crypto? (2015) by 0x0 on Saturday December 17, 2016 @10:59AM (#13201115)
It's never a no-risk addition. Perhaps your custom code is buggy and ends up adding in random memory contents that happened to contain both your AES key and your custom crypto key, into the message payload ala heartbleed.