f********f
发帖数: 475 | 1 在做一个小的project, 这是程序:
.h file:
class DES_Encryption
{
private:
static bool bDesBusy;
public:
static void encrypt(UINT16 *in_msg, UINT16 *DES_Key);
static void decrypt(UINT16 *in_msg, UINT16 *DES_Key);
};
.cpp file:
void DES_Encryption::encrypt(UINT16 *inBlock, UINT16 *DES_Key)
{
if (!bDesBusy)
{
bDesBusy = true ;
.............
bDesBusy = false ;
}
}
void DES_Encryption::decrypt(UINT16 *inBlock, UINT16 *DES_Key)
{
if (!bDesBusy)
{
bDe |
|
w**z
发帖数: 8232 | 2 We were recently able to confirm that there was unauthorized access to a
Slack database storing user profile information. We have since blocked this
unauthorized access and made additional changes to our technical
infrastructure to prevent future incidents. We have also released two factor
authentication and we strongly encourage all users to enable this security
feature.
We are very aware that our service is essential to many teams. Earning your
trust through the operation of a secure service w... 阅读全帖 |
|
W***o
发帖数: 6519 | 3 HTTP token 的要点就是encrypt 和decrypt，你的n个服务器如果同时知道一个
encryption secret, 那么它们可以都可以verify http request，而且一般的token加
密的时候你包括一个expiration time，解密的时候判断一下token是否已经过期 |
|
c********1
发帖数: 5269 | 4 It is tricky to manually tracking cookies, and deal with encryption and
https encryption.
You can try curl if resource is not an issue.
curl should not use a lot of more computer resouce than wget. |
|
m*********d
发帖数: 7 | 5 Well, it is "better" not to go through a hostile nation.
What if there is a war between PRC and Japs?
End to End encryption can only protect privacy but
not availability.
Internet _is_ untrusted. What makes you think it's safer for us to
talk directly to USA than through Japan? Use end-to-end encryption
if you want security. |
|
w*******o
发帖数: 32 | 6
3DES is not vulnerable to these academia attacks.
These RSA people don't know Shannon's pure cipher system,
where EDE equals to E (E: encryption, D:decryption).
So-called double encryption and double key problem are not
justifiable in theory, as Shannon's pure cipher theory implied,
but these RSA people (including Ron Rivest) don't read Shannon's
result, and invent a set of vulnerable schemes, then attack
the vulnerable schemes to attract attention.
This is really amazing. |
|
A*****o
发帖数: 222 | 7 What? Nothing to do with dial-up? that was just an encription tool
you can use any encryption tools to encrypt the email |
|
a****8
发帖数: 2771 | 8 【 以下文字转载自 PDA 讨论区 】
发信人: hydralistor (hydralistor), 信区: PDA
标 题: NSA已经破解了主要的加密协议。
发信站: BBS 未名空间站 (Thu Sep 5 16:46:47 2013, 美东)
http://www.nytimes.com/2013/09/06/us/nsa-foils-much-internet-en
---------------------------------------------
在telecomm的设备中加backdoor等等。get precryt access, private key databsse,
etc. MS is named here. hehe
--------------------------------------------------------
At Microsoft, as The Guardian has reported, the N.S.A. worked with company
officials to get pre-encryption ac... 阅读全帖 |
|
d*****f
发帖数: 122 | 9 【 以下文字转载自 deleted 讨论区 】
【 原文由 yujh 所发表 】
right.
actually, I don't know about the 'unprintable' pdf,
but I did the pdf->ps->pdf thing to an encrypted
pdf (which couldn't be selected or modified), and
the encryption was gone after this. |
|
g*****g
发帖数: 34805 | 10 You make it too big a deal, what sensitive data you have in
your PC? Google is not gonna send your credit card information
or anything like that, or it'll get caught by other users in
no time. Google is not gonna collect your contacts and send
spam either. Maybe Google will collect the urls you access,
big deal.
If you are really into protecting your privacy, let me ask
you, how often do you encrypt your emails, how about your friends
sending you email, do they use encrypted email? |
|
z***e
发帖数: 5393 | 11 Usually those attacks have different requirement, such as "encryption only"
or "authentication only".
Chosen cipher attack is a broad concept, kind like "searching algorithm",
but it totally depends on how you do it. Some examples I know is to use
chosen cipher for IPSec, but as I said, it has a lot of limits and only
works if you don't configure your computer well.
encryption != security. |
|
w********e
发帖数: 275 | 12 美国移民局的I-485表格是一个可填写的加密的PDF文件。我想改动一下其可填写区域的
字体和字号，不知道如何改。
不知道帖子中能否加URL链接，Google form I-485就可以找到这个表格。
我用的是Adobe Acrobat Pro 9，先试了Adobe LiveCycle Designer，但这个I-485文件
要求密码才能打开。
后来又想把这个文件打印成PDF文件，然后用Adobe Acrobat Pro 的typewriter工具来
填。可是在打印成PDF文件的过程中出现错误信息：
This PostScript file was created from an encrypted PDF file.
Redistilling encrypted PDF is not permitted.
这个文件倒是可以 Export成非加密的PostScript文件，可是在打开那个PostScript文
件是也出现上面那个错误信息
不知道那位大侠有什么方法？
多谢！ |
|
N******o
发帖数: 3053 | 13 Lab给买的台式机，学校IT部门的人简直就应该吃点屎补补脑子。新机子拿去装一些安
全软件什么，同时做一个ISO备用，用了两个多星期。拿回来一看，猪们把Win7 64位降
到XP 32位，所以买的16G内存被32位只能认到4G，买的500G+500G硬盘，被XP只能认到
500G+40G。
给硬塞进一个McAfee Endpoint Encryption，这玩意简直就是病毒，硬盘狂闪，三代i7
被它搞得基本上干不了什么。进Local Service关了它。后来Office Outlook有点问题
，于是修复，重启。McAfee Endpoint Encryption生气了，挂了，说被Corrupted了。
放狗一看，麻烦的要死，还有失去所有Data可能。日啊，学校IT又拿去折腾了。
以前在federal government时候认为安全等级应该是最高了，到了这个不入流大学，学
校的行政以及Support部门，它们的主要职能就是给你找麻烦。来了一个半月了，电脑
都没有搞掂。要不是Lab老板的才能，鬼才会来这个穷乡僻壤，不入流的大学。康州真
是个鬼地方。 |
|
z*****n
发帖数: 7639 | 14 Hi,
I got a problem at the last step.
I followed the way as you said, but using adobe PS printer
instead of yours. Everything is ok to generate PS document
containing the clipped figure. But when use gsview to
output pdf file, it always says:
This PostScript file was created from an encrypted PDF file.
Redistilling encrypted PDF is not permitted.
Unrecoverable error: undefined in get
Operand stack:
--nostringval-- --nostringval-- quit
gsapi_execute_cont returns -21
gsapi_exit returns 0
op |
|
s***l
发帖数: 2236 | 15 【 以下文字转载自 Science 讨论区 】
【 原文由 shell 所发表 】
关于密码学我知道的也不是很多，所以在说量子密码学前我先说一点密码学的基本
知识，目的是让对密码学一点没概念的朋友易于了解大家讨论的出发点。不过我也
不是学这个的，所以都是自己的理解，欢迎批判指正。
密码学(cryptography)简单的说就是通过某种方式只能将信息传递给特定的接受者。
实现的手段基本上就是对要传递的信息实行加密 (encryption) 和解密 (decryption)
算法，从而使任何其它人没有办法获得原始信息。密钥 (key) 指的是一串特定的参数，
发送信息的一方用密钥和原始信息进行加密运算得到密文 (cryptogram)，接收方用密
钥和密文进行解密运算得到原始信息。加密和解密的算法是公开的，密文的保密性依赖
于密钥的保密性。密钥的保密性依赖于密钥的随机性和有足够的长度。密钥分两类，一
类是对称密钥 (Symmetric key) ，发送和接收方用同样的密钥进行加密解密，比如DES
(Data Encryption Standard) 算法；另一类是非对称密钥 (Asymme |
|
m***y
发帖数: 35 | 16 probelm:
1. hard to do it in digital sytem(limited states)
2. based on some unproven assumption that chaoz is hard with no proof.
What happens if it is not hard in quantum computer? Actually if you have
unlmited computing power,I don't see why you can't break the chaoz encryption.
It is not everlasting. It may takes you 1month or 1 year to break it, but you
know, if you can break it if u have unlimited ocmputing power.
anyway, this everlasting encryption is great IMO since it only assumes
limite |
|
s***l
发帖数: 2236 | 17 关于密码学我知道的也不是很多，所以在说量子密码学前我先说一点密码学的基本
知识，目的是让对密码学一点没概念的朋友易于了解大家讨论的出发点。不过我也
不是学这个的，所以都是自己的理解，欢迎批判指正。
密码学(cryptography)简单的说就是通过某种方式只能将信息传递给特定的接受者。
实现的手段基本上就是对要传递的信息实行加密 (encryption) 和解密 (decryption)
算法，从而使任何其它人没有办法获得原始信息。密钥 (key) 指的是一串特定的参数，
发送信息的一方用密钥和原始信息进行加密运算得到密文 (cryptogram)，接收方用密
钥和密文进行解密运算得到原始信息。加密和解密的算法是公开的，密文的保密性依赖
于密钥的保密性。密钥的保密性依赖于密钥的随机性和有足够的长度。密钥分两类，一
类是对称密钥 (Symmetric key) ，发送和接收方用同样的密钥进行加密解密，比如DES
(Data Encryption Standard) 算法；另一类是非对称密钥 (Asymmetric key) ，发送
和接收方用不同的密钥进行加密解密，发送方用公用密钥 (P |
|
l*******s
发帖数: 7316 | 18 【 以下文字转载自 PDA 讨论区 】
发信人: llaalways (熊大), 信区: PDA
标 题: Shadowsocks 翻墙教程
发信站: BBS 未名空间站 (Sun Jan 8 20:12:36 2017, 美东)
Shadowsocks 翻墙教程
A．在linux服务器安装shadowsocks（以ubuntu为例）
https://www.linuxbabe.com/linux-server/setup-your-own-shadowsocks-server-on-
debian-ubuntu-centos
A1. 安装python-pip 和 python-m2crypto
sudo apt-get install python-pip python-m2crypto
A2. 通过pip 安装shadowsocks
sudo pip install shadowsocks
A3. 创建设置文件
sudo vi /etc/shadowsocks.json
并加入一下内容
{
"server":"your_server_ip",
"server_port":800... 阅读全帖 |
|
l*******s
发帖数: 7316 | 19 【 以下文字转载自 PDA 讨论区 】
发信人: llaalways (熊大), 信区: PDA
标 题: Shadowsocks 翻墙教程
发信站: BBS 未名空间站 (Sun Jan 8 20:12:36 2017, 美东)
Shadowsocks 翻墙教程
A．在linux服务器安装shadowsocks（以ubuntu为例）
https://www.linuxbabe.com/linux-server/setup-your-own-shadowsocks-server-on-
debian-ubuntu-centos
A1. 安装python-pip 和 python-m2crypto
sudo apt-get install python-pip python-m2crypto
A2. 通过pip 安装shadowsocks
sudo pip install shadowsocks
A3. 创建设置文件
sudo vi /etc/shadowsocks.json
并加入一下内容
{
"server":"your_server_ip",
"server_port":800... 阅读全帖 |
|
w*******y
发帖数: 60932 | 20 Seagate FreeAgent Desk 1TB USB 2.0
External Hard Drive * Silver *
ST310005FDA2E1-RK
Seagate Technology:
FRYS.com #: 5725242
When you can't afford to lose anything, you need a drive that can handle
everything. This is the powerful yet simple safeguard.
* Back up all your photos, music, videos, and documents
* Easily protect data with automatic backup software
* Keep important files secure with built-in encryption
So much storage never looked so good.
Get a big block of storage that do... 阅读全帖 |
|
|
w*******y
发帖数: 60932 | 22 Product Description
The Popcorn Hour WN-150 is an 802.11n USB Wi-Fi dongle that lets you connect
your Popcorn Hour A-200 or C-200 player** wirelessly to your home network.
Secure, reliable and fast, the Popcorn Hour WN-150 has the bandwidth to
handle the largest multimedia and hi-def video files, and the robust
broadcasting capabilities to maintain consistent connections from one end of
your house to the other. The WN-150 has the following features: Miniature
size for greater flexibility. USB 2.... 阅读全帖 |
|
w*******y
发帖数: 60932 | 23 For those who want to monitor your network or PC's from your iPhone, iPod,
or iPad. Funny thing is that I believe it only works for Windows PC's and
not iMacs .
Link:
http://itunes.apple.com/us/app/pc-monitor/id405566169?mt=8
Description
** FREE FOR A LIMITED TIME *** Remotely monitor and manage your PC services,
processes, users, memory, system events and more. This securely encrypted
app gives you total control of your computers from anywhere at any time.
Check out the amazing features and fu... 阅读全帖 |
|
w*******y
发帖数: 60932 | 24 Intel 320 Series SSDSA2CW120G3K5 2.5" 120GB SATA II MLC Internal Solid State
Drive (SSD) - $219.99 Less Coupon Code is $199.99 with free shipping.
Google Shopping:
http://www.google.com/products/catalog?hl=en&q=Intel 320 Series 120GB 2.5" Internal SSD&um=1&ie=UTF-8&cid=5606119828459360412&sa=X&ei=z0jHTev-DYnegQfpxbXMBA&ved=0CDYQ8wIwAg#
#" rel="nofollow" target="_blank" onclick="_gaq.push(['_trackEvent', 'thread
', 'click', '2910265 - intel-320-series-120gb-sata-ii-mlc-2.5-internal-
notebook-ssd... 阅读全帖 |
|
w*******y
发帖数: 60932 | 25 (Please delete if this is a repost)
PCWorld Exclusive: Laplink's PC Lock Secures Notebook PCs (FREE Today only--
Save $30)
While Windows' user data encryption is fine for most users, laptop owners
might want a bit more control over the security of their data. After all,
laptop theft is on the rise worldwide. Laplink:
http://www.pcworld.com/downloads/search?qt=laplink
's PC Lock:
http://www.laplink.com/pclocklaunch
utility (free today, $15 the rest of this week, $30 with a 30-day trial
thereaft... 阅读全帖 |
|
w*******y
发帖数: 60932 | 26 Seagate FreeAgent GoFlex 500GB USB 3.0 Ultra-Portable External Hard Drive,
Black $49 at Walmart
linly:
http://www.walmart.com/ip/Hard-Drive-Enclosures/15222297
This is the small USB powered portable kind (2.5" drive - no external AC
cord needed)
Description:
quote
This Seagate FreeAgent GoFlex 500GB USB 3.0 Ultra-Portable External Hard
Drive is no ordinary external drive. It is the world's most versatile
external drive, allowing it to deliver a truly customizable experience. This
Seagate FreeAge... 阅读全帖 |
|
w*******y
发帖数: 60932 | 27 Cisco Valet M10 Wireless BroadBand Router 54Mbps 802.11N M10-RM
This item is Cisco Certified Refurbished
Cisco Valet M10 300Mbps Wireless N Router with Parental controls, Easy Setup
USB Key Included for PC and MAC, Cisco Recertified
Manufacturer Part # M10
Features/Specifications:
General Features:
Broadband router
Wireless Access Point
Four port 10/100 Ethernet switch
Complies with IEEE 802.11n as well as IEEE 802.11b/g
2.4 GHz operating frequency
Supports WEP & WPA2 wir... 阅读全帖 |
|
w*******y
发帖数: 60932 | 28 TP-LINK TL-WN951N wireless-n 802.11bgn 300mbps wireless pci adapter $14.99
shipped
Link:
http://www.mwave.com/mwave/SKUSearch.asp?px=DS&scriteria=BA2548
Description:
TL-WN951N Wireless N PCI Adapter complies with IEEE 802.11n (Draft 2.0),
IEEE 802.11g, and IEEE 802.11b standards. Wireless transmission rates can
reach up to 300Mbps. The PCI Card adopts MIMO as well as SST technologies,
has three external detachable omni directional antennas providing even
better wireless performance, transmission... 阅读全帖 |
|
