Fix potential crash on loading dkek.

polhenarejos · polhenarejos · commit 25c93c279fcf · 2024-04-17T19:42:47.000+02:00
Signed-off-by: Pol Henarejos &lt;pol.henarejos@cttc.es&gt;
diff --git a/src/hsm/kek.c b/src/hsm/kek.c
@@ -110,7 +110,7 @@ int mse_decrypt_ct(uint8_t *data, size_t len) {
 
 int load_dkek(uint8_t id, uint8_t *dkek) {
     file_t *tf = search_file(EF_DKEK + id);
-    if (!tf) {
+    if (!file_has_data(tf)) {
         return CCID_ERR_FILE_NOT_FOUND;
     }
     memcpy(dkek, file_get_data(tf), DKEK_KEY_SIZE);

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ int mse_decrypt_ct(uint8_t *data, size_t len) {`
`110`	`110`
`111`	`111`	`int load_dkek(uint8_t id, uint8_t *dkek) {`
`112`	`112`	`file_t *tf = search_file(EF_DKEK + id);`
`113`		`- if (!tf) {`
	`113`	`+ if (!file_has_data(tf)) {`
`114`	`114`	`return CCID_ERR_FILE_NOT_FOUND;`
`115`	`115`	`}`
`116`	`116`	`memcpy(dkek, file_get_data(tf), DKEK_KEY_SIZE);`