A*******n
发帖数: 625 | 1 试过，得到的就是blank，我觉得没法做，很多可能性。 谢了 |
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y********o
发帖数: 2565 | 3 I have never encrypted the connection string. Would you please give more de
tails?
1. Do we encrypt the connection string with an encryption algorithm of our
choice?
2. And then put the encrypted connection string, presumably something like
"AE0139FADDE2AD009EADFEEAA23EAE61F329882E3F", in web.config?
3. Suppose it is the case that 2 is true, then don't we have to decrypt it
in the code behind like below?
SqlConnection conn =
new SqlConnection(DecryptMyConnectionString(myEncryptedConnection |
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z**r
发帖数: 17771 | 4 The MOS value has too little to do with the platform, as long as the processor
is power enough to process the p2p connections and encryption/decryption.
MOS cares about the codec and network most.
So to answer your question, the quality depends on what network you use for
your PDA |
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v**n
发帖数: 951 | 5 I am interested too.
please keep us posted. Thanks
software
would need, routing protocols, firewalling, site2site and remote access
VPN (especially GRE/IPsec), IPS/IDS, VoIP, QoS etc. I highly doubt that
it can compete with Cisco ISR in terms of performance,IOS is purposely
built for fast-switching packets after all, besides IPsec
encryption/decryption will eat up a lot of CPU cycles if there is no
separate module takes the load off CPU. Of course, feature richness
wise, it does not co: me eve |
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c**t
发帖数: 2744 | 6 They are encrypted, hard for 3rd party to decrypt. But for caller itself,
the encryption is not a issue
know |
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s*****g
发帖数: 1055 | 7 How does that work? when you connect to your broker via SSL connection, you
encrypt the session with the key derived from your boker's public key and other
parameters only you and your broker's webserver know , only your broker has
corresponding private key, without the private key, how can the firewall
decrypt the session?
If this is doable, then what will stop a hacker from placing such device in the middle
and capture all SSL session information? |
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c**t
发帖数: 2744 | 8 After more googling, I found:
Tunnel encrypts the header and payload of each packet.
I had the capatured packets (by wireshark), they are all encrypted, question
now becomes how to decrypt. I have the device (iPad, iPhone). |
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d*2
发帖数: 2053 | 9 RHEL 5.8 x64
Nexus 5548, (10Gbit switch and 10Gbit card from Intel), dedicated switch
scp from one node to another node, only get about 60MB/s~70MB/s
tftp get 600MB/s~700MB/s
scp will do some encryption/decryption, but the overhead seems to be too
much? |
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t****g
发帖数: 35582 | 10 我记得我当时用的一个软件就是自己先decrypt，然后写成一个iso。
拿这个iso刻盘，就没有区码限制了，什么碟机都能放。 |
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i***l
发帖数: 9994 | 12 Brilliant Idea, man!
Only drawback is what if new technique later appears that can decrypt the
file? |
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l***h
发帖数: 9308 | 13 不知道为啥教程中VPN Tunneling中服务器协议把默认的UDP改成TCP，我照猫画虎也改成
TCP，刚才看别的教程用UDP，更改成UDP后，任务栏中的OpenVPN GUI灯变成绿色，显示
联通10.8.0.6，
不过无法浏览网页，仔细看Log，最后还有点问题：Authenticate/Decrypt packet err
or: cipher final failed
明天再折腾 |
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L***s
发帖数: 1148 | 15 没人贴这个？
http://lavabit.com/
May 20th, 2014
My Fellow Citizens,
My legal saga started last summer with a knock at the door, behind which
stood two federal agents ready to serve me with a court order requiring the
installation of surveillance equipment on my company’s network.
My company, Lavabit, provided email services to 410,000 people, and thrived
by offering features specifically designed to protect the privacy and
security of its customers. I had no choice but to consent to the
installation o... 阅读全帖 |
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R****r
发帖数: 227 | 17 A simple way to do this:
1. client authenticate itself with the server
2. client send its public key K to the server
3. the server generate the symmetric secret key n
4. the server encrypt n using K and send the result K(n) to the client
5. the client decrypt K(n) using its own private key, and get n
Of course, this simple method is vunerable to many attacks.
There are more sophisticated protocols that you can find on the internet. |
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d******g
发帖数: 18 | 18 【 以下文字转载自 Programming 讨论区,原文如下 】
发信人: doodling (foxtail), 信区: Programming
标 题: crypto++ and Java
发信站: Unknown Space - 未名空间 (Fri Sep 3 13:35:09 2004) WWW-POST
I am new to cryptogrpahy, especially for java cryptography.
Is there any good crypto library in Java such that it can
work fine with crypto++. i.e. strings encrypted using crypto++ can be
decrypted using the java crypto library, and vice versa.
Any suggestions are welcome.
Thanks a lot. |
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w*******e
发帖数: 285 | 19 我在server和client之间的传输用AES加密解密，String和byte[]之间的转换都用UTF8
编码
public String decrypt(String CipherText) {
try {
byte[] raw = decoder.decodeBuffer(CipherText);
byte[] stringBytes = decrypt_cipher.doFinal(raw);
String PlainText = new String(stringBytes, "UTF8");
return PlainText;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public String encrypt(String PlainText) {
try {
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m******t
发帖数: 2416 | 20 Are you running multiple encrypting/decrypting threads? |
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g*****g
发帖数: 34805 | 21 Certificate is public key, you import certificate from server so that you
can
encrypt your request and the server can decrypt it. If the server doesn't
operate on non-secure mode, I am afraid you can't do that.
the
https |
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g*****g
发帖数: 34805 | 22 You always need a keystore on server side, which contain
public and private keys. Server sends the public key (certificate)
to client first time the client connects. The client uses
the cert to encrypt the traffic and it can be only decrypted with
the keystore. This is assymetric (actually a random key is generated
to do symmetric entryption and the random key itself is encrypted
assymetrically)
Now the problem is the public key, a public key needs to be signed
by a trusted CA or your browser wi |
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r*****l
发帖数: 2859 | 23 You need to balance security and usability. If you want automatic restart,
then the only way you can protect your password is to use access control.
However, root can get everything. If you make sure that you are the root and
make the password file only readable by root and your application user,
then you are ok. I am not a *nix guru though. Weblogic is using similar
approach. Look at its SerializedSystemIni.dat file. However, if someone can
read that file, he/she can decrypt the password with v... 阅读全帖 |
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r*****l
发帖数: 2859 | 24 You need to balance security and usability. If you want automatic restart,
then the only way you can protect your password is to use access control.
However, root can get everything. If you make sure that you are the root and
make the password file only readable by root and your application user,
then you are ok. I am not a *nix guru though. Weblogic is using similar
approach. Look at its SerializedSystemIni.dat file. However, if someone can
read that file, he/she can decrypt the password with v... 阅读全帖 |
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S***d
发帖数: 1802 | 26 try this:
Two Perl implementations courtesy of MIT Student Information Processing
Board members Keith Winstein and Marc Horowitz. The shorter one, qrpff, is
472 bytes (discounting newlines). The faster one, 531 bytes long, caches the
permutation corresponding to CSStab1, and is actually fast enough to use to
watch a movie. The program takes a five-byte title key on the command line
(five decimal numbers in least to most-significant order, separated by
colons) and an MPEG2 Program Stream VOB file... 阅读全帖 |
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z**r
发帖数: 17771 | 27 ☆─────────────────────────────────────☆
zher (民工.铜豌豆) 于 (Mon Aug 2 03:01:27 2010, 美东) 提到:
家里很多俺闺女看的少儿DVD，都是正版的，可经常放来放去，有些已经磨损了，想
copy一下留个备份，发现直接copy不行，都有版权保护。有什么办法可以留个备份呢？
☆─────────────────────────────────────☆
xiaoju (可爱的龙猫) 于 (Mon Aug 2 03:11:14 2010, 美东) 提到:
Google一下一堆工具。
☆─────────────────────────────────────☆
zher (民工.铜豌豆) 于 (Mon Aug 2 03:29:47 2010, 美东) 提到:
以前就google过，很多说是免费，结果都是功能不全，也懒得一个一个去试了。哪个软
件比较靠谱？windows下的也行
☆─────────────────────────────────────☆
xiaoju (可爱的... 阅读全帖 |
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x****s
发帖数: 921 | 28 手边没有DVD，see here:
http://club.myce.com/f62/tutorial-dvd-video-file-structure-7764
and man ffmpeg:
· You can transcode decrypted VOBs:
ffmpeg -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k -g 300
-bf 2 -c:a libmp3lame -b:a 128k snatch.avi
This is a typical DVD ripping example; the input is a VOB file,
the output an AVI file with MPEG-4 video and MP3 audio. Note
that in this command we use B-frames so the MPEG-4 stream is
DivX5 compatible, and GOP siz... 阅读全帖 |
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