"Digital Signature" Essays and Research Papers

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Digital Signature

Digital Signature Act 1997 The primary intent of the Digital Signature Act 1997 is to regulate the use of digital signatures and to provide for matters connected therewith. We start with the privacy implications of digital signatures in general. A digital signature is a 'message digest' encrypted using the sender's private key. The recipient can recreate the message digest from the message they receive using the sender's public key. He can then compare the two results to satisfy himself...

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Digital Signature

. 1 A digital signature is the term used for marking or signing an electronic document, by a process meant to be equivalent to paper signatures, but which makes use of a technology known as public-key cryptography. Additional security properties are required of signatures in the electronic world. This is because the probability of disputes rises dramatically for electronic transactions without face-to-face meetings, and in the presence of potentially undetectable modifications to electronic...

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Digital Signature

   DIGITAL SIGNATURE A digital signature is an electronic signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and possibly to ensure that the original content of the message or document that has been sent is unchanged. Why use certificate signatures? Many business transactions, including financial, legal, and other regulated transactions, require high assurance when signing documents. When documents are distributed electronically...

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Digital Certificates Can They Be Trusted

 Digital Certificates Can They Be Trusted Table of Contents Introduction We now live in a world where we as consumers are free to shop 24/7. The world wide web has given us greater access to consumer goods than ever before. As more and more purchases are taking place virtually, where there is no face to face interaction between a buyer and a seller, the need to ensure that online transactions have been made securely is vital to the online shopping community. For e-commerce to...

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Microsoft Word

Microsoft Windows | Type | Word processor | License | Proprietary EULA | DIGITAL SIGNATURE :- Definition A digital signature or digital signature scheme is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid 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. Digital signatures are commonly used for software distribution, financial transactions, and in other...

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Public Key Encription

another concept involving key pairs: one for encrypting, the other for decrypting. This concept, as you will see below, is very clever and attractive, and provides a great deal of advantages over symmetric-key: • Simplified key distribution • Digital Signature • Long-term encryption However, it is important to note that symmetric-key still plays a major role in the implementation of a Public-key Infrastructure or PKI. 1.1 A definition Public-key is commonly used to identify a cryptographic...

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Lab: Align Appropriate PKI Solutions Based on Remote Access and Data Sensitivity

establishes who is sending/receiving data. Integrity - the data has not been altered in transmission. Non-repudiation - parties to a transaction cannot convincingly deny having participated in the transaction. The public key infrastructure provides for a digital certificate that can identify an individual or an organization and directory services that can store and, when necessary, revoke the certificates. The public key infrastructure assumes the use of public key cryptography, which is the most common method...

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Public Key Cryptography Case Study

session key to the client who requested it. When requesting for a TGT from the authentication server (AS), the client will send its digital certificate along with the concatenation of nonce and ID of the AS which has been digitally signed using the client’s private key. Upon receiving the message, the AS will verify the identity of the client by decrypting the digital signature using the public key extracted from the client’s certificate. After the verification, AS will generates a session key for communication...

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Unit 2 Assignment 2

Vulnerability of a Cryptosystem 1. Microsoft is aware that research was published at a security conference proving a successful attack against X.509 digital certificates signed using the MD5 hashing algorithm. This attack method could allow an attacker to generate additional digital certificates with different content that have the same digital signature as an original certificate. The MD5 algorithm had previously shown a vulnerability, but a practical attack had not yet been demonstrated. Solution...

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Digital Signature

Digital Signatures CONTENTS 1. ABSTRACT 2. INTRODUCTION 3. DESIGN PRINCIPLES & EXPLANATION 3.1. MODULES 3.2. MODULE DESCRIPTIOIN 4. PROJECT DICTIONARY 4.1. DATAFLOW DIAGRAMS 5. FORMS & REPORTS 5.1. I/O SAMPLES 6. BIBILIOGRAPHY 1. ABSTRACT The security of information available to an organization was primarily provided through physical and administrative means. For example, rugged file cabinets with a combination lock were used for storing sensitive documents and...

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