Mifare classic 1k

[vas]

I have some keytags with the following manufacturer block:

1. 4550ce65be0804006263646566676869

2. c7ba8023de0804006263646566676869

3. 37897123ec0804006263646566676869

Does anyone know who is the chip manufacturer for these keytags?

These keytags can't be broken by PROXMARK3!

Thanks in advance.

[Jonathan_Iglesias]

Dear Vasile Cadinoiu,

Hope you are doing great, I would like to know what is the purpose of trying to break the tags you mention, using the PROXMARK3.

BR

Jonathan

[vas]

It is known that 1k mifare is vulnerable to key and data readout. I make mifare 1k keyfob readers, which I use for building access systems. I'm interested that these keyfobs can not be cloned. We have tested several types of 1k mifare from several manufacturers. This type I noticed can not be broken with proxmark3, but I do not know who the producer is. That's all. Thanks for reply.

[vas]

Dear Jonathan,

Have you a reply for my request?

Thanks.