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Nov 10, 2020 at 13:46 comment added user1067003 @BrianDrake well 10 bytes is way more than enough, but i don't know what the lower limit is (maybe even 4 bytes is good enough, i don't know, but i know that 10 more than enough), as for /dev/urandom, i meant the concept of /dev/urandom: cryptographically secure random bytes, regardless of the source (/dev/urandom is just a famous source - less famous sources include the linux api getrandom, the windows api CryptGenRandom, the openssl api RAND_bytes, etc)
Nov 10, 2020 at 13:32 comment added Brian Drake Why do you make this very specific recommendation: “10 bytes of /dev/urandom”? Why 10 bytes? What if the developer is using a high-level language where there is a better way of getting entropy?
Nov 10, 2020 at 13:27 history answered user1067003 CC BY-SA 4.0