linux/crypto/jitterentropy.c

63 /* The entropy pool */
71 	void *hash_state;		/* SENSITIVE hash state entropy pool */
113 					   * entropy, saves MEMORY_SIZE RAM for
114 					   * entropy collector */
127  * The output n bits can receive more than n bits of min entropy, of course,
129  * approach the output size bits of min entropy, not attain that bound. Random
131  * output entropy (that is what SP 800-90B Section 3.1.5.1.2 attempts to bound).
135  * that a string can be considered "full entropy" if you can bound the min
136  * entropy in each bit of output to at least 1-epsilon, where epsilon is
153  * @ec [in] Reference to entropy collector
164  * Insert a new entropy event into APT
166  * @ec [in] Reference to entropy collector
217  * @ec [in] Reference to entropy collector
245  * @ec [in] Reference to entropy collector
306  * an entropy collection.
345  * entropy pool using a hash.
347  * ec [in] entropy collector
352  * updated hash context in the entropy collector or error code
391  * @ec [in] Reference to the entropy collector with the memory access data -- if
436  * Start of entropy processing logic
439  * This is the heart of the entropy generation: calculate time deltas and
441  * entropy pool.
447  * @ec [in] Reference to entropy collector
482  * @ec [in] Reference to entropy collector
509  * Entry function: Obtain entropy for the caller.
511  * This function invokes the entropy gathering logic as often to generate
512  * as many bytes as requested by the caller. The entropy gathering logic
515  * This function truncates the last 64 bit entropy value output to the exact
518  * @ec [in] Reference to entropy collector
646 	 * jitter entropy that could potentially be caught here. But  in jent_entropy_init()
673 		/* Invoke core entropy collection logic */  in jent_entropy_init()
712 			 * than 10% of the overall generated raw entropy values  in jent_entropy_init()
737 		 * for the calculation of entropy -- perform this check  in jent_entropy_init()
760 	 * than 1 to ensure the entropy estimation  in jent_entropy_init()