I need to create a PBKDF2 key to use in my AES encryption routine in my iPhone Xcode application. I have seen references to using OpenSSL to do this, but not found specific references to what module within OpenSSL to call.
I have scanned various OpenSSL .h files searching for a means to make this call, but have so far been unsuccessful.
The key I will be using is 5-digits, Salt is 12 characters, Iterations is 1000, and I need a 128-bit generated key.
You can use the
PKCS5_PBKDF2_HMAC_SHA1() function in
openssl/evp.h. Divining how to use the function is pretty easy from the declaration:
int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen, const unsigned char *salt, int saltlen, int iter, int keylen, unsigned char *out);