crypto/jitterentropy.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 extern void *jent_zalloc(unsigned int len);
   4 extern void jent_zfree(void *ptr);
   5 extern void jent_get_nstime(__u64 *out);
   6 extern int jent_hash_time(void *hash_state, __u64 time, u8 *addtl,
   7                           unsigned int addtl_len, __u64 hash_loop_cnt,
   8                           unsigned int stuck);
   9 int jent_read_random_block(void *hash_state, char *dst, unsigned int dst_len);
  10
  11 struct rand_data;
  12 extern int jent_entropy_init(void *hash_state);
  13 extern int jent_read_entropy(struct rand_data *ec, unsigned char *data,
  14                              unsigned int len);
  15
  16 extern struct rand_data *jent_entropy_collector_alloc(unsigned int osr,
  17                                                       unsigned int flags,
  18                                                       void *hash_state);
  19 extern void jent_entropy_collector_free(struct rand_data *entropy_collector);
  20
  21 #ifdef CONFIG_CRYPTO_JITTERENTROPY_TESTINTERFACE
  22 int jent_raw_hires_entropy_store(__u32 value);
  23 void jent_testing_init(void);
  24 void jent_testing_exit(void);
  25 #else /* CONFIG_CRYPTO_JITTERENTROPY_TESTINTERFACE */
  26 static inline int jent_raw_hires_entropy_store(__u32 value) { return 0; }
  27 static inline void jent_testing_init(void) { }
  28 static inline void jent_testing_exit(void) { }
  29 #endif /* CONFIG_CRYPTO_JITTERENTROPY_TESTINTERFACE */