IOS数字证书的基础知识

在讲数字证书之前必须要讲非对称加密算法和摘要算法，因为数字证书的基础就是各种加解密算法（非对称加密、摘要算法），而其中的核心就是非对称加密算法了。目前而言加密方法可以分为两大类。一类是单钥加密（private key cryptography）也可以称为对称加密，还有一类叫做双钥加密（public key cryptography）也可称为非对称加密。前者的加密和解密过程都用同一套密码，后者的加密和解密过程用的是不同的密码。下面来看看对称加密、非对称加密以及摘要算法，他们是怎样应用在数字证书中的。

对称加密

RADIUS Server Access Control

for WiFi Hot Spots

Army’s standardized encryption chip comes to the RESCUE

ABERDEEN PROVING GROUND, Md. — Almost every…

SSH login phase hijacking on RPI

Oct 19 02:04:01 ##### logger: ’SCP: root 10.0.14.200 46784 10.0.14.13 22:’   -r -f /var/log

Even if we had sudo for acting like a super user, we started to realise that, somehow, we could obtain the root password and, more important, escalate the…

TREZOR Firmware 1.3.4 enables SSH login

A few days ago we released a new 1.3.4 version of TREZOR firmware. This is an optional stable release, which includes the following changes:

• TREZOR now shows seconds counter during PIN lockdown (after wrong PIN is entered), so you now…

Ready. Steady. Go! The speed of VM creation and SSH access on AWS, DigitalOcean, Linode, Vexxhost, Google Cloud, Rackspace and Microsoft Azure.

07 March 2015