Omri Barel questions

Omri Barel answers

• About conversion of char to int in C with extending sign
• Creating a sha256 signature using openssl
• signed_extension in c
• Good coding: Pointers rather than references? [closed]
• Python list of list retrieve data
• C structure initialization with variable
• Android tutorial error: R cannot be resolved to a variable
• Rabin-Miller Strong Pseudoprime Test Implementation won't work
• Lua string.match uses irregular regular expressions?
• Simple way to implement public-key cryptography in C++?