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“Secure Socket Layer”Project Presentation by:

Dwiti Gajab

Mihir Trivedi

Aman Chaurasia

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Contents: Cryptography and Secure Socket Layer

(SSL)

Establishment of Secured connection for “Encryption”

Briefing on Asymmetric Encryption algorithms

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Cryptography:

Security and Integrity

Encryption helps in achieving this.

SSL is one such type of protocols. Its two main functions are:

Encryption

Identification

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Why SSL exists?

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SSL Architecture:

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Few terms: Certificate:

- It is used to authenticate the website.

- Issued by Certificate Authority (CA).

- Mainly contains: Public Key Digital Signature

Hashing:

- It is a process that compresses text to a single number.

- Used in a certificate and in SSL handshaking.

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Data Transfer:

Asymmetric Data Transfer- Used in handshaking- Two Keys are involved:

Public Key: It is used to encrypt. Private Key: It is used to decrypt.

Symmetric Data Transfer

Used in application data transfer. Same key is used in encryption & decryption.

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SSL Handshaking:

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Encryption Algorithms:

RC4

AES

HMAC- SHATriple DESDiffie Hellman

HAC- MD5DESRSA

HashCipherKey

A B

RC4

AES

HMAC- SHATriple DESDiffie Hellman

HAC- MD5DESRSA

HashCipherKey

Computers agree how to encrypt !

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Asymmetric Key Cryptography: Diffi Hellman algorithm Rivest, Shamir and Adleman (RSA) algorithm

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Symmetric key Cryptography:

Used for encryption of data.

Substitution/Transposition/Simple round ciphers.

Modern round ciphers: DES, Triple DES, AES

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Future Scope:

Development of RSA algorithm for better security.

References:

Data communication and Networking, 4E, by Behrouz A. Forouzan

Computer Networks by Ross & Kurose Network Security IOS by CISCO. http://en.wikipedia.org/wiki/Secure_Sockets_Layer http://httpd.apache.org/docs/2.0/ssl/ssl_intro.html

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Any Questions???

Thank You…