diff options
Diffstat (limited to 'src/Crypto/jitterentropy.h')
| -rw-r--r-- | src/Crypto/jitterentropy.h | 53 |
1 files changed, 34 insertions, 19 deletions
diff --git a/src/Crypto/jitterentropy.h b/src/Crypto/jitterentropy.h index b6929933..3dd69017 100644 --- a/src/Crypto/jitterentropy.h +++ b/src/Crypto/jitterentropy.h @@ -1,7 +1,7 @@ /* * Non-physical true random number generator based on timing jitter. * - * Copyright Stephan Mueller <smueller@chronox.de>, 2014 + * Copyright Stephan Mueller <smueller@chronox.de>, 2014 - 2019 * * License * ======= @@ -53,32 +53,45 @@ struct rand_data * of the RNG are marked as SENSITIVE. A user must not * access that information while the RNG executes its loops to * calculate the next random value. */ - uint64_t data; /* SENSITIVE Actual random number */ - uint64_t old_data; /* SENSITIVE Previous random number */ - uint64_t prev_time; /* SENSITIVE Previous time stamp */ + uint64_t data; /* SENSITIVE Actual random number */ + uint64_t prev_time; /* SENSITIVE Previous time stamp */ #define DATA_SIZE_BITS ((sizeof(uint64_t)) * 8) - uint64_t last_delta; /* SENSITIVE stuck test */ - int64_t last_delta2; /* SENSITIVE stuck test */ - unsigned int osr; /* Oversample rate */ - int fips_enabled; /* FIPS enabled? */ - unsigned int stir:1; /* Post-processing stirring */ - unsigned int disable_unbias:1; /* Deactivate Von-Neuman unbias */ + uint64_t last_delta; /* SENSITIVE stuck test */ + uint64_t last_delta2; /* SENSITIVE stuck test */ + unsigned int osr; /* Oversampling rate */ #define JENT_MEMORY_BLOCKS 64 #define JENT_MEMORY_BLOCKSIZE 32 #define JENT_MEMORY_ACCESSLOOPS 128 #define JENT_MEMORY_SIZE (JENT_MEMORY_BLOCKS*JENT_MEMORY_BLOCKSIZE) - unsigned char *mem; /* Memory access location with size of - * memblocks * memblocksize */ - unsigned int memlocation; /* Pointer to byte in *mem */ - unsigned int memblocks; /* Number of memory blocks in *mem */ - unsigned int memblocksize; /* Size of one memory block in bytes */ - unsigned int memaccessloops; /* Number of memory accesses per random - * bit generation */ + unsigned char *mem; /* Memory access location with size of + * memblocks * memblocksize */ + unsigned int memlocation; /* Pointer to byte in *mem */ + unsigned int memblocks; /* Number of memory blocks in *mem */ + unsigned int memblocksize; /* Size of one memory block in bytes */ + unsigned int memaccessloops; /* Number of memory accesses per random + * bit generation */ + + /* Repetition Count Test */ + int rct_count; /* Number of stuck values */ + + /* Adaptive Proportion Test for a significance level of 2^-30 */ +#define JENT_APT_CUTOFF 325 /* Taken from SP800-90B sec 4.4.2 */ +#define JENT_APT_WINDOW_SIZE 512 /* Data window size */ + /* LSB of time stamp to process */ +#define JENT_APT_LSB 16 +#define JENT_APT_WORD_MASK (JENT_APT_LSB - 1) + unsigned int apt_observations; /* Number of collected observations */ + unsigned int apt_count; /* APT counter */ + unsigned int apt_base; /* APT base reference */ + unsigned int apt_base_set:1; /* APT base reference set? */ + + unsigned int fips_enabled:1; + unsigned int health_failure:1; /* Permanent health failure */ }; /* Flags that can be used to initialize the RNG */ -#define JENT_DISABLE_STIR (1<<0) /* Disable stirring the entropy pool */ -#define JENT_DISABLE_UNBIAS (1<<1) /* Disable the Von-Neuman Unbiaser */ +#define JENT_DISABLE_STIR (1<<0) /* UNUSED */ +#define JENT_DISABLE_UNBIAS (1<<1) /* UNUSED */ #define JENT_DISABLE_MEMORY_ACCESS (1<<2) /* Disable memory access for more entropy, saves MEMORY_SIZE RAM for entropy collector */ @@ -137,6 +150,8 @@ unsigned int jent_version(void); #define EMINVARVAR 6 /* Timer variations of variations is too small */ #define EPROGERR 7 /* Programming error */ #define ESTUCK 8 /* Too many stuck results during init. */ +#define EHEALTH 9 /* Health test failed during initialization */ +#define ERCT 10 /* RCT failed during initialization */ /* -- BEGIN statistical test functions only complied with CONFIG_CRYPTO_CPU_JITTERENTROPY_STAT -- */ |