> And from that, you can go implement those cyphers [...] If I understand correctly, more crypto systems are broken because of implementation flaws than because of protocol flaws.
That is compare with high professional flaw-less implementations with high professional back doors built in like the RSA products.
>So if you have to implement it yourself, odds are that you will make a mistake that makes it insecure, especially if you aren't an expert on crypto.
It of course depends on who you're, whether somebody would go to the lengths of custom cracking your custom implementation vs. buying an "off-the-shelf" crack/backdoor if you use off-the-shelf software.
That is compare with high professional flaw-less implementations with high professional back doors built in like the RSA products.
>So if you have to implement it yourself, odds are that you will make a mistake that makes it insecure, especially if you aren't an expert on crypto.
It of course depends on who you're, whether somebody would go to the lengths of custom cracking your custom implementation vs. buying an "off-the-shelf" crack/backdoor if you use off-the-shelf software.