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validate vivokey spark1, and more details

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This commit is contained in:
iceman1001 2020-09-24 13:15:23 +02:00
parent 56c99d223c
commit a8185cc8d6
1 changed files with 54 additions and 3 deletions
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57
client/src/cmdhf15.c
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@ -423,6 +423,16 @@ static int nxp_15693_print_signature(uint8_t *uid, uint8_t *signature) {
};
*/
uint8_t i;
uint8_t revuid[8];
for (i = 0; i < sizeof(revuid); i++) {
revuid[i] = uid[7 - i];
}
uint8_t revsign[32];
for (i = 0; i < sizeof(revsign); i++) {
revsign[i] = signature[31 - i];
}
int reason = 0;
bool is_valid = false;
for (i = 0; i < ARRAYLEN(nxp_15693_public_keys); i++) {
@ -432,15 +442,42 @@ static int nxp_15693_print_signature(uint8_t *uid, uint8_t *signature) {
int res = ecdsa_signature_r_s_verify(MBEDTLS_ECP_DP_SECP128R1, key, uid, 8, signature, 32, false);
is_valid = (res == 0);
if (is_valid)
if (is_valid) {
reason = 1;
break;
}
// try with sha256
res = ecdsa_signature_r_s_verify(MBEDTLS_ECP_DP_SECP128R1, key, uid, 8, signature, 32, true);
is_valid = (res == 0);
if (is_valid) {
reason = 2;
break;
}
// try with reversed uid / signature
res = ecdsa_signature_r_s_verify(MBEDTLS_ECP_DP_SECP128R1, key, revuid, sizeof(revuid), revsign, sizeof(revsign), false);
is_valid = (res == 0);
if (is_valid) {
reason = 3;
break;
}
// try with sha256
res = ecdsa_signature_r_s_verify(MBEDTLS_ECP_DP_SECP128R1, key, revuid, sizeof(revuid), revsign, sizeof(revsign), true);
is_valid = (res == 0);
if (is_valid) {
reason = 4;
break;
}
}
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "--- " _CYAN_("Tag Signature"));
if (is_valid == false || i == ARRAYLEN(nxp_15693_public_keys)) {
PrintAndLogEx(INFO, " Elliptic curve parameters: NID_secp128r1");
PrintAndLogEx(INFO, " TAG IC Signature: %s", sprint_hex(signature, 32));
PrintAndLogEx(INFO, " TAG IC Signature: %s", sprint_hex_inrow(signature, 32));
PrintAndLogEx(SUCCESS, " Signature verification: " _RED_("failed"));
return PM3_ESOFT;
}
@ -448,8 +485,22 @@ static int nxp_15693_print_signature(uint8_t *uid, uint8_t *signature) {
PrintAndLogEx(INFO, " IC signature public key name: %s", nxp_15693_public_keys[i].desc);
PrintAndLogEx(INFO, "IC signature public key value: %s", nxp_15693_public_keys[i].value);
PrintAndLogEx(INFO, " Elliptic curve parameters: NID_secp128r1");
PrintAndLogEx(INFO, " TAG IC Signature: %s", sprint_hex(signature, 32));
PrintAndLogEx(INFO, " TAG IC Signature: %s", sprint_hex_inrow(signature, 32));
PrintAndLogEx(SUCCESS, " Signature verification: " _GREEN_("successful"));
switch(reason) {
case 1:
PrintAndLogEx(INFO, " Params used: UID and signature, plain");
break;
case 2:
PrintAndLogEx(INFO, " Params used: UID and signature, SHA256");
break;
case 3:
PrintAndLogEx(INFO, " Params used: reversed UID and signature, plain");
break;
case 4:
PrintAndLogEx(INFO, " Params used: reversed UID and signature, SHA256");
break;
}
return PM3_SUCCESS;
}