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Editing: CHANGES.md
3.6.0 * Remove bi-modal behavior of conditioning function * Make jent_read_entropy_safe safer by retrying the health test * Move the version information to make them available at compile time 3.5.0 * add distinction between intermittent and permanent health failure * add compile time option to allow configuring a mask to reduce the size of the time stamp used for the APT 3.4.1 * add FIPS 140 hints to man page * simplify the test tool to search for optimal configurations * fix: jent_loop_shuffle: re-add setting the time that was lost with 3.4.0 * enhancement: add ARM64 assembler code to read high-res timer 3.4.0 * enhancement: add API call jent_set_fips_failure_callback as requested by Daniel Ojalvo * fix: Change the SHA-3 integration: The entropy pool is now a SHA-3 state. It is filled with the time delta containing entropy and auxiliary data that does not contain entropy using a SHA update operation. The auxiliary data is calculated by a SHA-3 hashing of some varying state data. The time delta that contains entropy is measured about the SHA-3 hasing of the auxiliary data. This satisfies FIPS 140-3 IG D.K resolutions 4, 6, and 8. * enhancement: add CMake support by Andrew Hopkins 3.3.1 * fix: bug fix in initialization logic by Vladis Dronov <vdronov@redhat.com> * fix: use __asm__ instead of asm to suit the C11 standard 3.3.0 * add jent_get_cachesize if _SC_LEVEL1_DCACHE_SIZE is not defined * limit the memory buffer size allocated and allow caller to provide the means to provide a limit, too * fix: update man page * update README explaining how to handle entropy shortfall to make it consistent with the current code base 3.2.0 * fix: add API call jent_read_entropy_safe to header file * enhancement: add jent_entropy_init_ex API call * enhancement: call jent_entropy_init_ex automatically when jent_entropy_collector_alloc_internal detects that no self test has yet been performed * test: provide jitterentropy-rng test tool allowing all options exported by the library to be invoked * fix: re-add check of time_backwards in power-on test * fix: silence static code analysis tool * test: add test for GCD * enhancement: add GCD selftest * fix: simplify memory management for SHA-3 * enhancement: add random memory access (JENT_RANDOM_MEMACCESS) 3.1.0 * Add link call to pthreads library as suggested by Mikhail Novosyolov * Add ENTROPY_SAFETY_FACTOR to apply consideration of asymptotically reaching full entropy following SP800-90C suggested by Joshua Hill * Add test for finiding more entropy by changing the memory buffer size used for the memory access loop * Increase the memory buffer size to 512 kBytes per default based on measurements on systems with low entropy. * Add jent_ncpu() detecting the number of existing CPUs. Only when more than one CPU is in the system, the internal timer thread is started. * add GCD testing and analysis suggested by Joshua Hill * add fixes to APT suggested by Joshua Hill * add lag predictor health test suggested by Joshua Hill * add jent_read_entropy_safe API call * break up jitterentropy-base.c into various smaller code files 3.0.2 * Small fixes suggested by Joshua Hill * Update the invocation of SHA-3 invocation: each loop iteration defined by the loop shuffle is a self-contained SHA-3 operation. Therefore, the conditioning information is always *one* SHA-3 operation with different time duration. * add JENT_CONF_DISABLE_LOOP_SHUFFLE config option allowing disabling of the shuffle operation * Use -O0 3.0.1 * on older GCC versions use -fstack-protector as suggested by Warszawski, Diego * prevent creating the internal timer thread if a high-res hardware timer is found as reported by Lonnie Abelbeck 3.0.0 * use RDTSC on x86 directly instead of clock_gettime * use SHA-3 instead of LFSR * add internal high-resolution timer support 2.2.0 * SP800-90B compliance: Add RCT runtime health test * SP800-90B compliance: Add Chi-Squared runtime health test as a replacement for the adaptive proportion test * SP800-90B compliance: Increase initial entropy test to 1024 rounds * SP800-90B compliance: Invoke runtime health tests during initialization * remove FIPS 140-2 continuous self test (RCT covers the requirement as per FIPS 140-2 IG 9.8) * SP800-90B compliance: Do not mix stuck time deltas into entropy pool 2.1.2: * Add static library compilation thanks to Neil Horman * Initialize variable ec to satisfy valgrind as suggested by Steve Grubb * Add cross-compilation support suggested by Lonnie Abelbeck 2.1.1: * Fix implementation of mathematical properties. 2.1.0: * Convert all __[u|s][32|64] into [uint|int][32|64]_t * Remove all code protected by #if defined(__KERNEL__) && !defined(MODULE) * Add JENT_PRIVATE_COMPILE: Enable flag during compile when compiling a private copy of the Jitter RNG * Remove unused statistical test code * Add FIPS 140-2 continuous self test code * threshold for init-time stuck test configurable with JENT_STUCK_INIT_THRES during compile time 2.0.1: * Invcation of stuck test during initalization 2.0.0: * Replace the XOR folding of a time delta with an LFSR -- the use of an LFSR is mathematically more sound for the argument to maintain entropy 1.2.0: * Use constant time operation of jent_stir_pool to prevent leaking timing information about RNG. * Make it compile on 32 bit archtectures 1.1.0: * start new numbering schema * update processing of bit that is deemed holding no entropy by heuristic: XOR it into pool without LSFR and bit rotation (reported and suggested by Kevin Fowler <kevpfowler@gmail.com>)
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