cryptography

CRYPTOGRAPHY-a way out of Network Security concern

Securing any network infrastructure is like securing possible entry points of attacks on a country by deploying appropriate defense. Computer security is more like providing means of self-defense to each individual citizen of the country. The former is better and practical to protect the civilians from getting exposed to the attacks. The preventive measures attempt to secure the access to individual computers--the network itself--thereby protecting the computers and other shared resources such as printers, network-attached storage connected by the network. Attacks could be stopped at their entry points before they spread. As opposed to this, in computer security the measures taken are focused on securing individual computer hosts. A computer host whose security is compromised is likely to infect other hosts connected to a potentially unsecured network. A computer host's security is vulnerable to users with higher access privileges to those hosts.Thus the way out of these network security problems araises through the concept of CRYPTOGRAPHY.

The term is often used to refer to the field as a whole, as is cryptology ("the study of secrets"). The study of how to circumvent the confidentiality sought by using encryption is called cryptanalysis or, more loosely, "code breaking." The field is a rich source of jargon, some of it humorous. Cryptography is the study of message secrecy. In modern times, it has become a branch of information theory, as the mathematical study of information and especially its transmission from place to place. The noted cryptographer Ron Rivest has observed that "cryptography is about communication in the presence of adversaries." It is a central contributor to several fields: information security and related issues, particularly, authentication, and access control. One of cryptography's primary purposes is hiding the meaning of messages, not usually the existence of such messages. Cryptography also contributes to computer science, central to the techniques used in computer and network security for such things as access control and information confidentiality. Cryptography is also used in many applications encountered in everyday life; the security of ATM cards, computer passwords, and electronic commerce all depend on cryptography.Thus I have chosen this topic to discuss the verious issues that stands in the way of providing the secure an reliable networking through various network.

Yahoo Messenger

Yahoo buddy spy, Multi Yahoo, Yahoo decodecs are some of the notty softwares i use to use yahoo messenger to the maximum level.

**Yahoo buddy spy lets u to know any of our friends who is online but remains in invisible mode.

**Multi Yahoo is kinda one in which u could use to login into different yahoo ids using yahoo messenger all at the same time. maximum one could login into three accounts at a time using this.

**Yahoo decodes is one which decodes the message archive and shows the conversation or chat we have done without having to login into messenger, i.e offline and that too without password. but u have to keep your message archive on in ur messenger.

hope u try these things and plz reply how helpful were they.

vnrs@home 

Sensible story

A woman came out of her house and saw 3 old men with long white beards sitting in her front yard. She did not recognize them. She said "I don't think I know you, but you must be hungry. Please come in and have something to eat."

"Is the man of the house home?", they asked.


"No", she replied. "He's out."

"Then we cannot come in", they replied.
In the evening when her husband came home, she told him what had happened.
"Go tell them I am home and invite them in!"
The woman went out and invited the men in"

"We do not go into a House together," they replied.


"Why is that?" she asked.

One of the old men explained: "His name is Wealth," he said pointing to one of his friends, and said pointing to another one, "He is Success, and I am Love." Then he added, "Now go in and discuss with your husband which one of us you want in your home."

The woman went in and told her husband what was said. Her husband was overjoyed. "How nice!!", he said. "Since that is the case, let us invite Wealth. Let him come and fill our home with wealth!"

His wife disagreed. "My dear, why don't we invite Success?"

Their daughter-in-law was listening from the other corner of the house. She jumped in with her own suggestion: "Would it not be better to invite Love? Our home will then be filled with love!"

"Let us heed our daughter-in-law's advice," said the husband to his wife.
"Go out and invite Love to be our guest."
The woman went out and asked the 3 old men, "Which one of you is Love? Please come in and be our guest."

Love got up and started walking toward the house. The other 2 also got up and followed him. Surprised, the lady asked Wealth and Success: "I only invited Love, Why are you coming in?"

The old men replied together: "If you had invited Wealth or Success, the other two of us would've stayed out, but since you invited Love, wherever He goes, we go with him. Wherever there is Love, there is also Wealth and Success!!!!!!"


MY WISH FOR YOU...

-Where there is pain, I wish you peace and mercy.-Where there is self-doubting, I wish you a renewed confidence in your ability to work through it.-Where there is tiredness, or exhaustion, I wish you understanding, patience, and renewed strength.-Where there is fear, I wish you love, and courage.

Nice joke

1. Compaq is considering changing the command "Press Any Key" to "Press Return Key" because of the flood of calls asking where the "Any" key is.
2. AST technical support had a caller complaining that her mouse was hard to control with the dust cover on. The cover turned out to be the plastic bag the mouse was packaged in.
3. Another Dell customer called to say he couldn't get his computer to fax anything. After 40 minutes of troubleshooting, the technician discovered the man was trying to fax a piece of paper by holding it in front of the monitor screen and hitting the "Send" key.
4. Yet another Dell customer called to complain that his keyboard no longer worked. He had cleaned it by filling up his bathtub with soap and water and soaking the keyboard for a day, then removing all the keys and washing them individually.
5. A Dell technician received a call from a customer who was enraged because his computer had told him he was "Bad and an invalid." The tech explained that the computer's "bad command" and "invalid" responses shouldn't be taken personally.
6. A confused caller to IBM was having trouble printing documents. He told the technician that the computer had said it "couldn't find printer." The user had also tried turning the computer screen to face the printer-but that his computer still couldn't "see" the printer.
7. An exasperated caller to Dell Computer Tech Support couldn't get her new Dell Computer to turn on. After ensuring the computer was plugged in, the technician asked her what happened when she pushed the power button.
Her response, "I pushed and pushed on this foot pedal and nothing happened." The "foot pedal" turned out to be the computer's mouse...
8. Another customer called Compaq tech support to say her brand new computer wouldn't work. She said she unpacked the unit, plugged it in and sat there for 20 minutes waiting for something to happen.
When asked what happened when she pressed the power switch, she asked, "What power switch?"
9. Another IBM customer had trouble installing software and rang for support. "I put in the first disk, and that was OK. It said to put in the second disk, and had some problems with the disk. When it said to put in the third disk, I couldn't even fit it in..."
The user hadn't realized that "Insert Disk 2" implied removing Disk 1 first.
10. A story from a Novell NetWare SysOp:
CALLER: "Hello, is this Tech Support?" TECH: "Yes, it is. How may I help you?" CALLER: "The cup holder on my PC is broken -and I am within my warranty period. How do I go about getting that fixed?" TECH: "I'm sorry, but did you say a cup holder?" CALLER: "Yes, it's attached to the front of my computer." TECH: "Please excuse me. If I seem a bit stumped, it's because I am. Did you receive this as part of a promotional at a trade show? How did you get this cup holder? Does it have any trademark on it?" CALLER: "It came with my computer. I don't know anything about a promotional. It just has '4X' on it." At this point, the Tech Rep had to mute the caller because he couldn't stand it. He was laughing too hard. The caller had been using the load drawer of the CD-ROM drive as a cup holder and it had snapped it off the drive.
11. A woman called the Canon help desk with a problem with her printer. The tech asked her if she was "running it under windows."
The woman responded, "No, my desk is next to the door. But that is a good point. The man sitting in the cubicle next to me is under a window and his printer is working fine."
12. And last but not least:
TECH SUPPORT: "O.K. Bob, let's press the control and escape keys at the same time. That brings up a task list in the middle of the screen. Now type the letter "P" to bring up the Program Manager."
CUSTOMER: "I don't have a 'P'". TECH SUPPORT: "On your keyboard, Bob." CUSTOMER: "What do you mean?" TECH SUPPORT: " 'P' on your keyboard, Bob." CUSTOMER: "I'm not going to do that!"