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Isiah Collins. mathematical scheme for demonstrating the authenticity of a digital message or document. (Wiki) A way to protect important documents sent.

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Presentation on theme: "Isiah Collins. mathematical scheme for demonstrating the authenticity of a digital message or document. (Wiki) A way to protect important documents sent."— Presentation transcript:

1 Isiah Collins

2 mathematical scheme for demonstrating the authenticity of a digital message or document. (Wiki) A way to protect important documents sent over the Web ensuring that the information is from the intended person and has not been tampered with.

3 In 1976, Whitfield Diffie and Martin Hellman first described the notion of a digital signature scheme Ronald Rivest, Adi Shamir, and Len Adleman invented the RSA algorithm, which could be used to produce primitive digital signatures First widely marketed software package to offer digital signature was Lotus Notes 1.0, released in 1989, which used the RSA algorithm

4 Information is being hacked and infringed all the time. To provide Authenticity, Integrity and Non- repudiation to electronic documents Digital signature gives a recipient reason to believe that the message was created by a known sender, and that it was not altered in transit. To be able to use the Internet as a safe and secure medium for e-Commerce

5 Commonly used for software distribution Financial transactions also use these signatures Cases where it is important to detect forgery or tampering. Tax forms Financial Aid

6 Private Keys used for making digital signature This key is only known by the owner Public keys used for verifying the digital signature This key is publicly available to everyone NO MINE! OK YOU CAN HAVE THIS ONE

7 Using Keyed Hash function Using asymmetric key Cipher Putting the private key on a smart card. Using smart card readers with a separate keyboard. Other smart card designs. Using digital signatures only with trusted applications

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10 Digital Signatures are a way to protect important documents sent over the Web Each person has a pair of keys one public key known to anyone and a private key only know to the sender. First thought of in the late 1970s They are used on government documents and can be used on personal documents

11 Diffie Diffie %80%93Hellman_key_exchange %80%93Hellman_key_exchange ificate ificate nature nature


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