Tags » Private-key

private keys, certificate, certificate agent list, root certificate: how to generate whole chain using opensll

What are those?

Private keys, certificate, certificate agents and root certificate enable security between client server communication.  At a typical handshake phase of ssl / tls session, the server provides certificate and corresponding certificate agent list to the client. 785 more words

Certificate

PicoCTF 2017 – Keyz

Another day, another challenge…

In today’s blog post we’re going to solve the “Keyz” challenge in the PicoCTF.

Let’s get started.

Going to the challenge we see the following: 146 more words

Bitcoin Stolen on Live TV

On December 20, 2013 Bloomberg reporter Matt Miller was hosting “12 Days of Bitcoin” when he showed his bitcoin paper wallet on Live TV.

Little did he realize that he just showed the QR code on the paper wallet for his private bitcoin address (not the public address!) and a guy who was watching the show scanned the code quickly and instantly was $20 richer. 84 more words

Bitcoin

Wannakey_

Усе відносно – слабка реалізація механізмів шифрування ставить під загрозу захист інформації,
а правильне застосування криптографічних функцій дозволяє зловмисникам заробляти на Ransomware.

Через недолік реалізації криптографічних функцій в ОС Widnows XP досліднику Adrien Guinet… 15 more words

Infosec

Homomorphic Encryption Or Nude In The Dark Room

Maybe you still remember the times of good old analogue cameras. They had a film , which had to be send to be developped. You made some really good photos of your friend and for good reason you don’t wanted them to be seen by anybody else. 241 more words

Powershell - Split PFX certificates

Hi!!
It’s been awhile since I’ve posted something but last week I wrote a small script which I think will be useful to you!

Part of my many tasks where I work is to manage our PKI and in general work with and issue certificates. 826 more words

Powershell

linux: WARNING: UNPROTECTED PRIVATE KEY FILE!

If you face this kind of problem on Debian 8:


@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0644 for '/home/iplsdk/.ssh/id_rsa' are too open. 10 more words
Linux