fips186_2_prf() function

fips186_2-prf - NIST FIPS Publication 186-2 change notice 1 PRF @seed: Seed/key for the PRF @seed_len: Seed length in bytes @x: Buffer for PRF output @xlen: Output length in bytes Returns: 0 on success, -1 on failure This function implements random number generation specified in NIST FIPS Publication 186-2 for EAP-SIM. This PRF uses a function that is similar to SHA-1, but has different message padding.