crypto/jitterentropy.h

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