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Reject unsupported secure-messaging class bytes

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos
2026-08-14 19:57:22 +02:00
parent 4bcdaad49b
commit 7844361ad2
1 changed files with 3 additions and 0 deletions
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src/apdu.c
+3
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@@ -73,6 +73,9 @@ int process_apdu(void) {
is_chaining = false;
}
}
if (!(CLA(apdu) & 0x10) && (CLA(apdu) & 0x0C)) {
return SW_CLA_NOT_SUPPORTED();
}
if (INS(apdu) == 0xA4 && P1(apdu) == 0x04 && (P2(apdu) == 0x00 || P2(apdu) == 0x4)) { //select by AID
if (select_app(CONST_BYTE_ARRAY(apdu.data, apdu.nc)) == PICOKEYS_OK) {
return SW_OK();