Encryption-Decryption of Email

ENCRYPTION DECRYPTION OF EMAIL

By shashank singhal

Under supervision of Dr. Krishna Asawa

What is encryption?

A process that converts original information, also called plain text into a difficult-to-interpret form called ciphertext.

Done by using an encryption algorithm, a formula used to turn plain text into ciphertext.

Two types: Asymmetric and Symmetric

Asymmetric Encryption

Symmetric Encryption

Which one is better?

Although, symmetric encryption is fast, it is not as safe as asymmetric encryption because someone could “steal” the key and decode the messages. But because of its speed, it's commonly used for e-commerce transactions.

Asymmetric encryption is more complex--and more secure. Asymmetric encryption's added safety comes at a price: More computation is required, so the process takes longer.

Who’s using encryption?

If you use a computer and the internet, you’re using encryption!

Enables all organizations regardless of their size, to be both user-and-IT friendly.

Why use encryption?

Authentication Protects personal data such as passwords.

Privacy Provides for confidentiality of private

information.

Accountability Prevents denial or plagiarism.

Integrity Ensures that a document or file has not been

altered.

How do you manage encryption? Make sure the encryption system has a

complete key management application. This will help manage and protect the data and

keys, and help you safely match encrypted data with the right key.

Examples of Encryption

Web browser encryption

Email encryption

Hard drive encryption

Operating system protection

A few vendors and their product coverage Blackberry

System, software, hardware, and service.

Global Technologies Group, Inc. (GTGI) Software and hardware.

Hewlett-Packard Company System, software, hardware, and service.

Intellect Security Ltd. Software

How prevalent is it?

According to InformationWeek Research: Of 500 sites surveyed, two-thirds report using

encryption to protect company data.

Of 500 companies surveyed, 43% use encryption on both stored and transmitted data. More than three out of five companies encrypt due to the threat of outsiders intercepting sensitive data.

Continued…

Of 28% of sites surveyed, government regulation requires encryption of stored and transmitted data.

For 38% of companies, the complexity of the technology is an obstacle.

Some businesses aren’t able to use the technology because of the lack of skilled IT personnel and budget limitations.

Want more???

More on what encryption is… http://cplus.about.com/od/introductiontoprogramming/p/encryp

tion.htm http://www.pcworld.com/article/id,15230/article.html http://www.encyclopedia.com/doc/1G1-144388099.html http://www.informationweek.com/news/showArticle.jhtml?articl

eID=6507540 http://security.homeoffice.gov.uk/ripa/encryption/types-of-encry

ption/ http://www.itworld.com/nl/unix_sec/01242002/ http://www.pcmag.com/encyclopedia_term/0,2542,t=encryption

+algorithm&i=42595,00.asp

More on vendors and more detailed products…

http://securitypark.bitpipe.com/olist/Data-Encryption.html

Questions???