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Author Archives: ysj

ISO 27001 structure and granularity of the content

Posted on July 22, 2017 by ysj

I’m new to ISO 27001 and my goal is to come up with an ISMS policy for an mid-size organisation. As I did not purchase the standards, I went to read up advisera’s articles and went through their free foundation video course.

Now, I’m this… Continue reading ISO 27001 structure and granularity of the content→

Posted in corporate-policy, iso27000, iso27001

Approach to hack RFID Cards

Posted on September 21, 2015 by ysj

Recently RFID cards 13.56Mhz band caught my eye. What is the step by step approach to hack RFID Cards? I have a rough idea, but there are still quite a few doubts.

Identify the type of the card. Eg. Mifare Classic

Questions:
How do you… Continue reading Approach to hack RFID Cards→

Posted in rfid | Tagged NFC

Hash extension(padding) attack

Posted on April 27, 2013 by ysj

I recently came across this website talking about sha1 padding attack.

https://web.archive.org/web/20140729003849/http://www.vnsecurity.net/2010/03/codegate_challenge15_sha1_padding_attack/

After reading here are some of … Continue reading Hash extension(padding) attack→

Posted in Cryptography, hash

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