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tinycrypt: Fix discrepancy of ecc_make_key definition and declaration

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ecc_make_key declaration has random size of NUM_ECC_DIGITS * 2 but
definition has (and use) only NUM_ECC_DIGITS.

Change-Id: I18f0d7992b21a2ed7ed99851b1b795cff0a08a10
Signed-off-by: Szymon Janc <ext.szymon.janc@tieto.com>
This commit is contained in:
Szymon Janc 2016-05-12 10:19:52 +02:00 • committed by Anas Nashif
commit f23582fe71
1 changed files with 1 additions and 3 deletions
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4
lib/crypto/tinycrypt/include/tinycrypt/ecc_dh.h
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@ -90,15 +90,13 @@ extern "C" {
* *
* @note You must use a new non-predictable random number to generate each * @note You must use a new non-predictable random number to generate each
* new key pair. * new key pair.
* @note p_random must have NUM_ECC_DIGITS*2 bits of entropy to eliminate
* bias in keys.
* *
* @note side-channel countermeasure: algorithm strengthened against timing * @note side-channel countermeasure: algorithm strengthened against timing
* attack. * attack.
*/ */
int32_t ecc_make_key(EccPoint *p_publicKey, int32_t ecc_make_key(EccPoint *p_publicKey,
uint32_t p_privateKey[NUM_ECC_DIGITS], uint32_t p_privateKey[NUM_ECC_DIGITS],
uint32_t p_random[NUM_ECC_DIGITS * 2]); uint32_t p_random[NUM_ECC_DIGITS]);
/** /**
* @brief Determine whether or not a given point is on the chosen elliptic curve * @brief Determine whether or not a given point is on the chosen elliptic curve