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[M487/NUC472] zeroize random data on the stack memory

pull/5454/head
cyliangtw 2017-11-09 16:01:14 +08:00
parent 76c2c19853
commit e252b10148
2 changed files with 2 additions and 2 deletions
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2
targets/TARGET_NUVOTON/TARGET_M480/trng_api.c
View File

@ -92,10 +92,10 @@ int trng_get_bytes(trng_t *obj, uint8_t *output, size_t length, size_t *output_l
output += 32; output += 32;
} }
if( length > *output_length ) { if( length > *output_length ) {
trng_zeroize(tmpBuff, sizeof(tmpBuff));
trng_get(tmpBuff); trng_get(tmpBuff);
memcpy(output, &tmpBuff, (length - *output_length)); memcpy(output, &tmpBuff, (length - *output_length));
*output_length = length; *output_length = length;
trng_zeroize(tmpBuff, sizeof(tmpBuff));
} }
return 0; return 0;

2
targets/TARGET_NUVOTON/TARGET_NUC472/trng_api.c
View File

@ -97,10 +97,10 @@ int trng_get_bytes(trng_t *obj, uint8_t *output, size_t length, size_t *output_l
output += 32; output += 32;
} }
if( length > *output_length ) { if( length > *output_length ) {
trng_zeroize(tmpBuff, sizeof(tmpBuff));
trng_get(tmpBuff); trng_get(tmpBuff);
memcpy(output, &tmpBuff, (length - *output_length)); memcpy(output, &tmpBuff, (length - *output_length));
*output_length = length; *output_length = length;
trng_zeroize(tmpBuff, sizeof(tmpBuff));
} }
return 0; return 0;