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# Encryption

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### Encryption

1. 1. A PRESENTATION ON “DATA ENCRYPTION” Presented by: Anu bala Roll no 3373
2. 2.       Data encryption definition. Types of data encryption. Difference between symmetric and asymmetric. Encryption Methods. Data Encryption Standard (DES). Public Key Cryptosystem CONTENT
3. 3.  Data encryption refers to mathematical calculations and algorithmic schemes that transform plaintext into cyphertext, a form that is non-readable to unauthorized parties. The recipient of an encrypted message uses a key which triggers the algorithm mechanism to decrypt the data, transforming it to the original plaintext version Data encryption definition
4. 4. Data encryption
5. 5. *plaintext *encryption algorithm *public and private key *cipher text * decryption algorithm A public key encryption scheme has six ingredients
6. 6.  In symmetric (Single key): The encryption and decryption keys are the same. Types of data encryption
7. 7. .  Symmetric key encryption is also known as private encryption, because it uses the same key and same cryptographic algorithm to encrypt and decrypt data.
8. 8. A symmetric encryption scheme has five ingredients  * Plaintext * Encryption Algorithm * Secret key * Cipher Text * Decription
9. 9.  In asymmetric (two keys): The encryption and decryption keys are different. .
10. 10. .
11. 11.    The symmetric one key is used for symmetric and a symmetric but in asymmetric different keys are use for encryption and description. In symmetric, sender and receiver must share the algorithm and key but in a symmetric sender and receiver must have one matched pair of keys. In symmetric key must be kept secret but in asymmetric two keys must of kept secret. Difference b/w Asymmetric & Symmetric Encryption
12. 12. Thanks