Encryption Baabtra.com-No.1 Supplier of quality freshers

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document of baabtra –Mentoring Partner
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3. Reshmy c.s
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ENCRYPTION

4. CONTENTS
• What is encryption?
• why is it important?
• Why use encryption?
• Examples of Encryption
• How it works??

5. Encryption
• Encryption is the most effective way to
achieve data security
• Encryption is the process of converting data to
an unrecognizable or "encrypted" form.
• Encryption is also used to secure data sent
over wireless networks and the Internet

6. why is it important?
• Encryption is important because it allows you
to securely protect data that you don't want
anyone else to have access to.

7. Why use encryption?
• Authentication
• Protects personal data such as passwords.
 Privacy
• Provides for confidentiality of private
information.
• Integrity
• Ensures that a document or file has not
been altered.

8. Examples of Encryption
• Web browser encryption
• Email encryption
• Hard drive encryption

9. How it works??
• Start with a message that has to be sent
securely. This could be
Text.
Numeric Data.
Secret Codes
Next we need an encryption key. This could be a phrase
like ‘My secret password phrase
The computer receiving the message knows the digital key
and so is able to work out the original message.

10. Encryption methods
• Hashing Encryption
Since a hash is unique to a specific message,
even minor changes to that message result in
a dramatically different hash, thereby alerting
a user to potential tampering. Some common
hashing algorithms are Message Digest 5
(MD5) and Secure Hashing Algorithm (SHA).

11. • Symmetric Methods
– also called private-key cryptography, is one of the
oldest and most secure encryption methods
– A sender encodes a message into ciphertext using
a Private key, and the receiver uses the same key
to decode it

12. • Asymmetric Forms
 Asymmetric, or public key, cryptography is,
potentially, more secure than symmetric methods
of encryption.
 Uses two keys, a "private" key and a "public key,"
to perform encryption and decryption

13. Thankyou…

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