How do I base64 encode (decode) in C?

Question

I have binary data in an unsigned char variable. I need to convert them to PEM base64 in c. I looked in openssl library but i could not find any function. Does any body have

Answer 1

libb64 has both C and C++ APIs. It is lightweight and perhaps the fastest publicly available implementation. It's also a dedicated stand-alone base64 encoding library, which can be nice if you don't need all the other stuff that comes from using a larger library such as OpenSSL or glib.