/* * ccdrbg_impl.h * corecrypto * * Created on 01/03/2012 * * Copyright (c) 2012,2015 Apple Inc. All rights reserved. * */ #ifndef _CORECRYPTO_CCDRBG_IMPL_H_ #define _CORECRYPTO_CCDRBG_IMPL_H_ /* opaque drbg structure */ struct ccdrbg_state; struct ccdrbg_info { /*! Size of the DRBG state in bytes **/ size_t size; /*! Instantiate the PRNG @param prng The PRNG state @param entropylen Length of entropy @param entropy Entropy bytes @param inlen Length of additional input @param in Additional input bytes @return 0 if successful */ int (*init)(const struct ccdrbg_info *info, struct ccdrbg_state *drbg, size_t entropyLength, const void* entropy, size_t nonceLength, const void* nonce, size_t psLength, const void* ps); /*! Add entropy to the PRNG @param prng The PRNG state @param entropylen Length of entropy @param entropy Entropy bytes @param inlen Length of additional input @param in Additional input bytes @return 0 if successful */ int (*reseed)(struct ccdrbg_state *prng, size_t entropylen, const void *entropy, size_t inlen, const void *in); /*! Read from the PRNG in a FIPS Testing compliant manor @param prng The PRNG state to read from @param out [out] Where to store the data @param outlen Length of data desired (octets) @param inlen Length of additional input @param in Additional input bytes @return 0 if successfull */ int (*generate)(struct ccdrbg_state *prng, size_t outlen, void *out, size_t inlen, const void *in); /*! Terminate a PRNG state @param prng The PRNG state to terminate */ void (*done)(struct ccdrbg_state *prng); /** private parameters */ const void *custom; }; #endif // _CORECRYPTO_CCDRBG_IMPL_H_