Animal spies

Have you heard animal spies before? It is creative to train animals to support or even replace the work of human agents.

Animal is rarely viewed with suspicion and tend to be left out because they often appear in our surroundings. Animals usually be trained as messengers or listener-in.

During World War 2, pigeons not only acted as secret message carriers but also like a scout. They were trained to fly along specific routes and then released carrying tiny cameras that took photos automatically at specific intevals revealing the location of enemy forces.

As for dog, one of the most familiar animals for people, they were used for the best messengers in the war because of their fast speed and sensitive sense of smell. When it was too dark, or too foggy, wet for people and pigeons, they can still work.

Moreover, people implanted electronic device into animals like microphone, transmitter and battery. But I just wonder did it demage animal's health, such as reduce their life?

The US Navy uses specially trained dolphins and sea lions to patrol harbors. Besides, people also train the mice, Sphinx moths and so on.

secret toolkit

We could see many spys and some secret toolkits on movie. But what exact types of secret toolkit that spys apply in history or even current society?

I read the book named "Spy", which is written by Richard Platt. It is all about spys and other things related with spy. The most interesting part is the secret toolkit. There are various types of methods to provide convenience for spys' work and safety.

The most expressed method is the hidden card. In World War 2, spys used a pack of playing card to conceal maps in order to help plan escape. They torn each card apart revealed a small area of the map. The playing cards fit together like a puzzle.

In addition, spys usually need to take some picture or record some conversation. It is very important for them to apply proper methods to prevent from disclosing. So, there are two intellengent equipment. The first one is supersmall snapper. This tinny digital cameral concealed inside a cigarette ligter case, which could be carried in s spy's pocket to be available when an opportunity arose to take a secret picture. This tool could help spys to take photographys without attracting attention. The other one is listening pen. This pen is inconspicuous in the pocket and would not attract attention in a dest drawer. It concealed a microphone to ecesdrop on an nearby conversation.

There till so many different types of secret toolkits in this book. It is very interesting to know such amazing methods.

improtant!!

I have heard that a boy showed his affection to a girl and asked the girl whether or not she wants to be his girlfriend. And you know what? The girl did not say neither "yes" or "no", but left a encrypted message. She said if the boy could decode the message, she would be his girlfriend.

It is interesting right? So, this story shows another importance of the knowledge about cryptology. :)

Endless War

After reading the article about DirecTV. I found the war between DirecTV and hacking community just likes that between codemakers and codebreakers. It requires advanced technology and carefulness. It is a war without smoke and irrelated with military. However, it damages both producers and consumers' benefits and security.

I just wonder whether or not there is some law designed for banning hackers' attack and then protecting public safety. In some way, the fighting between DirecTV and hacking community can promote development of technology. Nonetheless, overall, it is not good for society's stability and will cause a great amount of loss for coporations and customers.

As for code itself, "h" card is the main key in the whole case. DirecTV try improving the technique to protect the cards' information and destroying the cards, which were caught by hacking community. While hacking community just want to catch the satellite stream and gain the cards' information and then change them.

The procedure repeats again and again, and then the war between DirecTV and hacking community is endless.

thoughs about cryptology

There is an idea comming up that what do other people think about cryptology. And then, I do a research about this question and ask eight people.

The first person answered: Well, I it is about deciphering…spy…

The second person said: I think it is about mystery.

The third person said: In my mind, it just about secret, some important information related to military secrets…something like that.

The forth person said: It is about calculation, math…

The fifth person replied: It is a hard question to answer because cryptology involves a lot of knowledge and subjects. I do not think I can answer it ……

The sixth person answered: About code? telegram? War?

The seventh person answered: I really have no ideas about cryptology, can you tell me?……

The last person said: I am really interested about cryptology just because it represents to mystery, to disclose some hidden truth.

See, “There are a thousand Hamlets in a thousand people's eyes”. Different people have different understanding about cryptology.

language barrier

There are various culture and languages around the world. Because of such diversity, different groups of people living in different areas do not know other groups of people's language. People living in current society also have no ideas about ancient languages if the language has changed a lot or even has been extinct.

In the chapter 5 of "The Code Book",cryptographers cooperate with archeologers working on abstruse symbols, which represents different meanings in an ancient language. It is very difficult to figure out the exact meaning of each symbols without any knowledge about the type of language.

Based on the place, where archeologer unearth the materials with those symbols on it, people who are proficient in the language will start work, like comparing those language to other language which used near the discovery place.

According to "The Code Book", I found cryptology relates to many other subjects such as language, math, archeology, geography,physics, chemistry and so on.

Because of combination of various fields, cryptology seems like whimsical riddle, which strongly incites people's curiosity.

promote equity

Most time, people utilize code to keep secret secure. For example, military always has special organization to create code in order to keep crucial communication secure as well as to break enemies' code in order to gain important information. As for daily life, some people will apply code to prevent other people from reading their private blog, only someone who know the author's password can have access to read it.

Actually, code can also promote equity. In our accounting class, sometimes, we have to do quiz on the computer. In order to prevent some student do the quiz earlier or even leak out the question to others, professor set the code. Only until professor tells us the code we could do quiz. In addition, professor will change the code at next quiz. As a result, it promote equity that every one knows the quiz at the first time and starts the quiz at nearly the same time.

always change password

I find when I logged in my account on college's computer, it will remind me of changing my password. Have you found it?

It seems a little bit inconvenient for us to change the password from time to time. In addition, because we can not just use the most familiar and frequently used password forever, it increases the possibility that we forget the password.

So, is it necessary to change our college account password nearly every two months? Maybe it could somewhat keep our accounts at high level of security. What about your idears?

cryptology puzzle

I found a very interesting website about cryptology puzzle!!

http://www.mindfun.com/crypto/

However, it does not tell us the type of cryptology only provide answer.

Try it!

can you udnersatnd?

Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, It deosn't mttaer in waht oredr the ltteers in a wrod are,the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae.The rset can be a total mses and you can sitll raed it wouthit porbelm.

It seems interesting, right? So, I just wonder if it is right, the sender can mix the order of words in plain text and then compile it. May be it can raise the difficulty to decipher...