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Memset kcv to 0 always when called.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos 2022-08-10 23:58:01 +02:00
parent 356eeea505
commit ffd31f2ea7
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1 changed files with 3 additions and 0 deletions
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3
src/hsm/dkek.c
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@ -108,6 +108,7 @@ int import_dkek_share(uint8_t id, const uint8_t *share) {
int dkek_kcv(uint8_t id, uint8_t *kcv) { //kcv 8 bytes
uint8_t hsh[32], dkek[DKEK_SIZE];
memset(kcv, 0, 8);
int r = load_dkek(id, dkek);
if (r != CCID_OK)
return r;
@ -119,6 +120,7 @@ int dkek_kcv(uint8_t id, uint8_t *kcv) { //kcv 8 bytes
int dkek_kenc(uint8_t id, uint8_t *kenc) { //kenc 32 bytes
uint8_t dkek[DKEK_SIZE+4];
memset(kenc, 0, 32);
int r = load_dkek(id, dkek);
if (r != CCID_OK)
return r;
@ -130,6 +132,7 @@ int dkek_kenc(uint8_t id, uint8_t *kenc) { //kenc 32 bytes
int dkek_kmac(uint8_t id, uint8_t *kmac) { //kmac 32 bytes
uint8_t dkek[DKEK_SIZE+4];
memset(kmac, 0, 32);
int r = load_dkek(id, dkek);
if (r != CCID_OK)
return r;