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Merge pull request #3408 from AndrzejKurek/hamming-distance-improvements

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Hamming distance improvements
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Andrzej Kurek 2020-06-22 08:28:55 +01:00 • committed by GitHub
commit e5425a0944
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5 changed files with 21 additions and 18 deletions
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13
include/tinycrypt/ecc.h
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@ -155,7 +155,8 @@ extern const uECC_word_t curve_b[NUM_ECC_WORDS];
* @param random OUT -- random integer in the range 0 < random < top
* @param top IN -- upper limit
* @param num_words IN -- number of words
* @return a random integer in the range 0 < random < top
* @return UECC_SUCCESS in case of success
* @return UECC_FAILURE upon failure
*/
int uECC_generate_random_int(uECC_word_t *random, const uECC_word_t *top,
wordcount_t num_words);
@ -163,9 +164,9 @@ int uECC_generate_random_int(uECC_word_t *random, const uECC_word_t *top,
/* uECC_RNG_Function type
* The RNG function should fill 'size' random bytes into 'dest'. It should
* return 1 if 'dest' was filled with random data, or 0 if the random data could
* not be generated. The filled-in values should be either truly random, or from
* a cryptographically-secure PRNG.
* return 'size' if 'dest' was filled with random data of 'size' length, or 0
* if the random data could not be generated. The filled-in values should be
* either truly random, or from a cryptographically-secure PRNG.
*
* A correctly functioning RNG function must be set (using uECC_set_rng())
* before calling uECC_make_key() or uECC_sign().
@ -181,8 +182,8 @@ typedef int(*uECC_RNG_Function)(uint8_t *dest, unsigned int size);
/*
* @brief Set the function that will be used to generate random bytes. The RNG
* function should return 1 if the random data was generated, or 0 if the random
* data could not be generated.
* function should return 'size' if the random data of length 'size' was
* generated, or 0 if the random data could not be generated.
*
* @note On platforms where there is no predefined RNG function, this must be
* called before uECC_make_key() or uECC_sign() are used.