(I am a cypto amatuer ) So in Openssl there is the "-rand" option for taking a file containing randomness for the RNG . So I thought taking a pretty big file would make it more secure . So if you use a lets say 2048 bit random binary file form "https://www.random.org" made from cosmetic noise you would be pretty safe right ? But the problem is that the if I used the file multiple times it is alway the same "random" input so i would have to make the file secret . So It would be better to change like one 0 or 1 in the 2048 bit every time using it right ? But here comes the Question : How much does changin a single charakter in 20148 bit affect the randomeness of the Output in the end ? Is it like hashing where the output is completely different after chaning only one bit or will the output be pretty much the same ?

(I am a cypto amatuer ) So in Openssl there is the "-rand" option for taking a file containing randomness for the RNG . So I thought taking a pretty big file would make it more secure . So if you use a lets say 2048 bit random binary file form "https://www.random.org" made from cosmic noise you would be pretty safe right ? But the problem is that the if I used the file multiple times it is alway the same "random" input so i would have to make the file secret . So It would be better to change like one 0 or 1 in the 2048 bit every time using it right ? But here comes the Question : How much does changing a single character in 2048 bit affect the randomeness of the Output in the end ? Is it like hashing where the output is completely different after changing only one bit or will the output be pretty much the same ?