CRYPTOGRAPHY.

Cryptography;This is the system of hiding texts. A science of encrypting and decrypting information in the form of text is the one so called cryptography. This topic is very important since it can be used in the security purposes for example in the provision of data confidentiality, integrity and electronic signatures.

The very interesting thing in this topic is about “Enigma”; this enigma is a type of cryptographic machine developed and used by Germany during the war especially in the World War II. The Germany military force used this machine to encrypt whatever the conversations they made with their troops so that no one else can understand whatever they were planning to do. By this technique they advanced a lot until the British scientist man Alan Touring came out with the machine which decrypted the codes made by this enigma machine.

In fact the discussion on this topic was good and it was very understandable to me. Since then I was able to know the common types of cryptography and the importance of them. There are several ways of classifying cryptography but in our discussion we sited on the two common types of cryptography based on number of keys employed for encrypting and decrypting namely “Secret key Cryptography” and the “Public Key Cryptography”.The secret key Cryptograph is the one which is common to us since the key used for encrypting is the same as the one used for decrypting for example in our daily life we use the same key for closing and opening things the same applied for this matter of locking and unlocking.

The interesting one is this is the public key cryptography were different keys are used for locking and unlocking the data. It is somehow difficult to make the imagination on how one key can be used for locking and another key used for unlocking data. In normal situation is difficult but for the case of computer it is quite easy. What is done here is that the data can be unlocked by a dedicated person only and no reply can be done since the key for unlocking can not be used for locking.

Although the cryptograph is very important to our life especially in the security purposes but there are some challenges which face the situation of hiding the data and information. Crackers are the worriers of the cryptograph, they tend to break the codes and read whatever is written. Also in other side to perform this thing it needs a skilled person whereby the connected people take the advantage.

Research Field in Computer Science.

Today I have started my Diary (Learning Review) on the Research Field of computer Science and I wish to finish it at the end of this semester i.e from today 16Th March 2009 up to around June 2009. I know that it is going to be a tough activity but I have to commit myself and consider this diary as my closest friend to which everything I do should be shared with my diary.

I promise to share with you all the points of view I got from different books and different authors which will lead me to improve my education level especially in this field of Computer Science. You! who viewing this blog I wish you will never laugh at me when I do foolish things, instead you will put a comment which will help me in correcting the mistakes I have made.

I will make sure that whatever I do is profitable to me and the majority who visit this blog. In this research I will base much in the part called "Speaker Recognition". From this speaker recognition you are expecting to have answered questions like "What is Speaker Recognition? Why this speaker recognition? Where to apply this thing? How to use this thing ? and other questions which will be answered as we proceed.

Computing with Society

Computing with Society
I decided to talk about Africa especially Tanzania because I know much about the culture of these people. I am real African, I was born in Africa and grown up in Africa in the very local village so I can explain much the difficulties the African societies are facing the this field of computing.We face these difficulties simply because of the low capital or fund which can help use to wake from the deep sleep we are now. In fact we are poor not only in capital but also in knowledge, I can say it is better to be poor in fund or capital rather than being poor in knowledge. You know in this African continent we have so many resources like minerals etc, but the problem is the proper utilization of the resources we have. Why this? I still asking myself.But may be to some extent you can have the answer, poor knowledge we have is the concrete reason and others then follows. Can you imagine that most of the African families study up to the university level without use a computer or even sometimes to see it? This is real wonderful! we are expecting these student to compete with those from Europe for example who starts using computers from the primary school. Automatically, we will be behind.

Why your married is so stubborn?

There is only one thing which can make your married to be staborn, can you guess what is it? I hope you are now discussing with your mind even together with your friends, but let me help you. Ohhh!....... I have forgoten, just wait till next time.....

Aaah, the thing which you are thinking of is a "TONGUE".

This tongue is a very small part of the human body but it can lead things to be in a difficult situation . From the tongue people are blessed or cursed. The tongue can bring success or failure.
Therefore the tongue is a single matchstick that can destroy a hundred tress in the forest. It is also like the small helm which controls the direction of a very huge ship.

For that reason, it is important for one to make a careful choice of one's words to avoid failure of toruble.

The marrital life is one area where a carful choice of words is important. This is the topic which I prefer today because many people are having some problems in their families without knowing the source of those problems. Now watch out.

As a life plant which needs much attention for its growth, marriage needs watering not by water but with sweet words.

Married people should remember the language they used during courtship and use sweet words which is what is pleasant to the ears. Many people forget this soon after marriege. Words like
"Darling! Sweet heart! You are my everything! Without you life is nothing. I love you from the bottom of my heart!"This might be a difficult exercise which could only be maintained at the time of courtship. Sometimes you had to be dramatic or poetic but it did not matter to you as long as it brought you succcess. But after your marriage your "sweet heart" has become a good for nothing woman. What is the reason?

It is advisable to be cautious before you blame men for changing titles of their wives and calling them nasty names because this treatment is determined by the love the spouses have for each other. The wives shouldn't relax and sit back after marriage, complacent that now, having discarded their maiden names, they are wearing nice wedding rings and have assumed new names reflective of their present respectable status.

Thank you for visiting my blog. Here is not the end it is to be continues.

NEW YEAR

Today I have something to share with you.

Well, I have been asking myself; why people do enjoy and selebrate very much during the end of the year (31 of December) and the begining of the new year (01 of January)?

Hear are some reasons;

• It is proudable to be among the very few people who selected to complete the year and at the same time to start a new year.
• In the new year normally every one asvance in one way or another i.e. those in schools they step foward, those workers they they get high grades and hence increase in salary.

CHRISMAS HOLIDAY

Well, today I just want to talk a litle bit about chrismas.

Chrismas is the day which happens once per year 25th of December. It is a very special day for christian people whereby it si beleaved that it is a day whe the son of God Jesus was born.

ICT AND DEVELOPMENT

Talkind about development, you must make some sort of comparisons. But here I am not interested with what development is. I just want to relate the development with the Information and Communication Technology (ICT).
It is really obvious that when you are talking about development, you must also consider the ICT due to the fact that everything done in any field the computers, phones, internets must be applied in a very high rate.
However you can just take these simple theree examples;

• ICT as a tool in bussiness. If you go to the bank now, you can see and tell me. Everything done there is ful computerized, you can see some different computers which perform different tasks. Some are used for counting money, some for putting the records of costomers, some for communication purposes to other computers in different banks.
• ICT in education has brought very big changes in education systems especially ni Sub-Sahara countries which was lagging behind. Nowdays in Africa we have many Professors, Doctors and also Phd holders. It doesn't mean that before people were having less qualifications, this is due to simplifications brought by computers and Internet.
• ICT in Agriculture, many people have improved the production in their fields due to the improvement of working tools. Before most of the farmers were using hand hoes but nowdays people are using tractors, they also using modern fertilizers etc.

So that is how ICT technology made us AFRICANS to start leavind the dackness.