Lightweight Cryptography Primitives
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internal-grain128.h
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22 
23 #ifndef LW_INTERNAL_GRAIN128_H
24 #define LW_INTERNAL_GRAIN128_H
25 
26 #include "internal-util.h"
27 
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38 
45 typedef struct
46 {
47  uint32_t lfsr[4];
48  uint32_t nfsr[4];
49  uint64_t accum;
50  uint64_t sr;
51  unsigned char ks[16];
52  unsigned posn;
55 
63 void grain128_core
64  (grain128_state_t *state, uint32_t x, uint32_t x2);
65 
73 uint32_t grain128_preoutput(const grain128_state_t *state);
74 
82 void grain128_setup
83  (grain128_state_t *state, const unsigned char *key,
84  const unsigned char *nonce);
85 
94  (grain128_state_t *state, const unsigned char *data,
95  unsigned long long len);
96 
105 void grain128_encrypt
106  (grain128_state_t *state, unsigned char *c, const unsigned char *m,
107  unsigned long long len);
108 
117 void grain128_decrypt
118  (grain128_state_t *state, unsigned char *m, const unsigned char *c,
119  unsigned long long len);
120 
129 
130 #ifdef __cplusplus
131 }
132 #endif
133 
134 #endif
uint64_t sr
Definition: internal-grain128.h:50
void grain128_encrypt(grain128_state_t *state, unsigned char *c, const unsigned char *m, unsigned long long len)
Encrypts and authenticates data with Grain-128.
Definition: internal-grain128.c:355
void grain128_compute_tag(grain128_state_t *state)
Computes the final authentiation tag.
Definition: internal-grain128.c:443
uint32_t grain128_preoutput(const grain128_state_t *state)
Generates 32 bits of pre-output data.
Definition: internal-grain128.c:119
unsigned posn
Definition: internal-grain128.h:52
Representation of the state of Grain-128.
Definition: internal-grain128.h:45
void grain128_decrypt(grain128_state_t *state, unsigned char *m, const unsigned char *c, unsigned long long len)
Decrypts and authenticates data with Grain-128.
Definition: internal-grain128.c:398
void grain128_setup(grain128_state_t *state, const unsigned char *key, const unsigned char *nonce)
Sets up the initial Grain-128 state with the key and nonce.
Definition: internal-grain128.c:200
uint64_t accum
Definition: internal-grain128.h:49
void grain128_authenticate(grain128_state_t *state, const unsigned char *data, unsigned long long len)
Authenticates data with Grain-128.
Definition: internal-grain128.c:314
void grain128_core(grain128_state_t *state, uint32_t x, uint32_t x2)
Performs 32 rounds of Grain-128 in parallel.
Definition: internal-grain128.c:43