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Merge pull request #153 from solokeys/rng-fix

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Fix buffer overrun and use correct size for random u32
This commit is contained in:
Conor Patrick
2019-03-26 15:37:51 -04:00
committed by GitHub
parent 98a209e330 40b9dae38a
commit 54a6a82ca0
1 changed files with 2 additions and 2 deletions
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4
targets/stm32l432/src/rng.c
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@@ -17,7 +17,7 @@ int __errno = 0;
void rng_get_bytes(uint8_t * dst, size_t sz) void rng_get_bytes(uint8_t * dst, size_t sz)
{ {
uint8_t r[8]; uint8_t r[4];
unsigned int i,j; unsigned int i,j;
for (i = 0; i < sz; i += 4) for (i = 0; i < sz; i += 4)
{ {
@@ -33,7 +33,7 @@ void rng_get_bytes(uint8_t * dst, size_t sz)
for (j = 0; j < 4; j++) for (j = 0; j < 4; j++)
{ {
if ((i + j) > sz) if ((i + j) >= sz)
{ {
return; return;
} }