Randomize a string in C

Question

I\'m trying to generate random permutations of an 80-character fixed string in C. Much to my dismay, the system I\'m working on lacks strfry(). What\'s the best way for me to

Answer 1

void gcry_randomize (unsigned char *buffer, size_t length, enum gcry_random_level level)

Fill buffer with length random bytes using a random quality as defined by level.

http://www.g10code.com/p-libgcrypt.html