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add setup oldkey if we change the same key

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This commit is contained in:
merlokk 2021-07-16 19:57:11 +03:00
commit a35e185b5b
1 changed files with 13 additions and 6 deletions
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19
client/src/cmdhfmfdes.c
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@ -4932,14 +4932,14 @@ static int CmdHF14ADesChangeKey(const char *Cmd) {
uint8_t oldkey[DESFIRE_MAX_KEY_SIZE] = {0};
uint8_t keydata[200] = {0};
int keylen = sizeof(keydata);
CLIGetHexWithReturn(ctx, 13, keydata, &keylen);
if (keylen && keylen != desfire_get_key_length(oldkeytype)) {
PrintAndLogEx(ERR, "%s old key must have %d bytes length instead of %d.", CLIGetOptionListStr(DesfireAlgoOpts, oldkeytype), desfire_get_key_length(oldkeytype), keylen);
int oldkeylen = sizeof(keydata);
CLIGetHexWithReturn(ctx, 13, keydata, &oldkeylen);
if (oldkeylen && oldkeylen != desfire_get_key_length(oldkeytype)) {
PrintAndLogEx(ERR, "%s old key must have %d bytes length instead of %d.", CLIGetOptionListStr(DesfireAlgoOpts, oldkeytype), desfire_get_key_length(oldkeytype), oldkeylen);
return PM3_EINVARG;
}
if (keylen)
memcpy(oldkey, keydata, keylen);
if (oldkeylen)
memcpy(oldkey, keydata, oldkeylen);
uint8_t newkeynum = arg_get_int_def(ctx, 14, 0);
@ -4949,6 +4949,7 @@ static int CmdHF14ADesChangeKey(const char *Cmd) {
uint8_t newkey[DESFIRE_MAX_KEY_SIZE] = {0};
memset(keydata, 0x00, sizeof(keydata));
int keylen = sizeof(keydata);
CLIGetHexWithReturn(ctx, 16, keydata, &keylen);
if (keylen && keylen != desfire_get_key_length(newkeytype)) {
PrintAndLogEx(ERR, "%s new key must have %d bytes length instead of %d.", CLIGetOptionListStr(DesfireAlgoOpts, newkeytype), desfire_get_key_length(newkeytype), keylen);
@ -4967,6 +4968,12 @@ static int CmdHF14ADesChangeKey(const char *Cmd) {
SetAPDULogging(APDULogging);
CLIParserFree(ctx);
// if we change the same key
if (oldkeylen == 0 && newkeynum == dctx.keyNum) {
oldkeytype = dctx.keyType;
memcpy(oldkey, dctx.key, desfire_get_key_length(dctx.keyType));
}
if (appid == 0x000000) {
PrintAndLogEx(WARNING, "Changing the root aid (0x000000)");