Digital Signature Standard

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  • This standard specifies a suite of algorithms which can be used to generate a digital signature. Digital signatures are used to detect unauthorized modifications to data and to authenticate the identity of the signatory. In addition, the recipient of signed data can use a digital signature in proving to a third party that the signature was in fact generated by the signatory.

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  • Using Russian digital signature (DS) standards as the underlying scheme there are designed the blind DS protocols that are the first known implementation of the blind DS based on signature standards. There are also proposed blind collective DS protocols based on the DS standards.

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  • This thesis will attempt to describe in detail the concepts of digital signatures and the related background issues. We will begin with a general introduction to cryptography and digital signatures and follow with an overview of the requisite math involved in cryptographic applications.

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  • The Digital Signature Algorithm (DSA) was specified in a U.S. Government Federal Information Processing Standard (FIPS) called the Digital Signature Standard (DSS [70]).

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  • The contents of this chapter include all of the following: Digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, digital signature model, attacks and forgeries, digital signature requirements, direct digital signatures, ElGamal digital signature.

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  • This standard specifies a Secure Hash Algorithm (SHA-1) which can be used to generatea condensed representation of a message called a message digest.

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  • In this chapter: We will continue our discussion on Needham-Schroeder Protocol and will see how does it work, digital signature standard (DSS) and digital signature algorithm (DSA) will be discussed, we will talk about authentication applications, and will study kerberos which is an authentication service developed at MIT.

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  • Encryption is a widely used technique which involves making information indecipherable to protect it from unauthorised viewing or use, especially during transmission or when it is held on removable magnetic media. Encryption is usually based on a key(s) without which the information cannot be decoded (decrypted). The most widely used encryption system is DES (Data Encryption Standard) although increasingly this is being replaced commercially by the more secure public key system RSA.

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  • Cryptography, in particular public-key cryptography, has emerged in the last 20 years as an important discipline that is not only the subject of an enormous amount of research, but provides the foundation for information security in many applications. Standards are emerging to meet the demands for cryptographic protection in most areas of data communications.

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  • "Handbook of applied cryptography" present overview of cryptography; mathematical background; number-theoretic reference problems; public-key parameters; pseudorandom bits and sequences; stream ciphers; block ciphers; public-key encryption; hash functions and data integrity; digital signatures; key establishment protocols; key management techniques; efficient implementation; patents and standards; bibliography of papers from selected cryptographic forums....

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  • The contents of this chapter include all of the following: symmetric key distribution using symmetric encryption, symmetric key distribution using public-key encryption, distribution of public keys, digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, X.509 authentication and certificates.

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