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sm: only return prepared random data during ec key generation

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This commit is contained in:
Matthias Ringwald 2017-04-13 16:10:14 +02:00
parent b8ae70b42a
commit 5198fffa56
1 changed files with 5 additions and 2 deletions
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7
src/ble/sm.c
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@ -2777,7 +2777,9 @@ static void sm_handle_encryption_result(uint8_t * data){
}
#ifndef HAVE_HCI_CONTROLLER_DHKEY_SUPPORT
// @return OK
static int sm_generate_f_rng(unsigned char * buffer, unsigned size){
if (ec_key_generation_state != EC_KEY_GENERATION_ACTIVE) return 0;
int offset = setup->sm_passkey_bit;
log_info("sm_generate_f_rng: size %u - offset %u", (int) size, offset);
while (size) {
@ -2785,12 +2787,13 @@ static int sm_generate_f_rng(unsigned char * buffer, unsigned size){
size--;
}
setup->sm_passkey_bit = offset;
return 0;
return 1;
}
#ifdef USE_MBEDTLS_FOR_ECDH
// @return error
static int sm_generate_f_rng_mbedtls(void * context, unsigned char * buffer, size_t size){
UNUSED(context);
return sm_generate_f_rng(buffer, size);
return sm_generate_f_rng(buffer, size) == 1;
}
#endif
#endif