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clear block data before copy

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merlokk 2021-07-31 20:38:27 +03:00
commit b12abd8f73
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client/src/mifare/desfirecore.c
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@ -694,6 +694,7 @@ static void DesfireJoinBlockToBytes(uint8_t *blockdata, size_t blockdatacount, s
static void DesfireSplitBytesToBlock(uint8_t *blockdata, size_t *blockdatacount, size_t blockdatasize, uint8_t *dstdata, size_t dstdatalen) { static void DesfireSplitBytesToBlock(uint8_t *blockdata, size_t *blockdatacount, size_t blockdatasize, uint8_t *dstdata, size_t dstdatalen) {
size_t len = 0; size_t len = 0;
for (int i = 0; i < *blockdatacount; i++) { for (int i = 0; i < *blockdatacount; i++) {
memset(&blockdata[i * blockdatasize + 1], 0, blockdatasize - 1);
size_t tlen = len + blockdata[i * blockdatasize]; size_t tlen = len + blockdata[i * blockdatasize];
if (tlen > dstdatalen) { if (tlen > dstdatalen) {
tlen = dstdatalen; tlen = dstdatalen;