Digital Signatures and Public-key Cryptography
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چکیده
منابع مشابه
Privacy for Private Key in Signatures
One of the important applications of digital signature is anonymous credential or pseudonym system. In these scenarios, it is essential that the identity of the signer is kept secret from any third party, except the trusted authority. The identity in such a system is uniquely identified by the secret key (or the signing key) rather than the public key, since the public key may be repeatedly ran...
متن کاملEncryption: Strengths and Weaknesses of Public-key Cryptography
Public key cryptography has become an important means of ensuring confidentiality, notably through its use of key distribution, where users seeking private communication exchange encryption keys. It also features digital signatures which allow users to sign keys to verify their identities. This research presents the innovations in the field of public-key cryptography while also analyzing their ...
متن کامل- 111 - Foundations of Cryptography
The idea of a "digital signature" first appeared in Diffie and Hellman’s seminal paper, "New Directions in Cryptography" [DH76]. They propose that each user U publishes a "public key", while keeping secret a "secret key". User U’s signature for a message m is a value σ depending on m and his public and secret keys such that U can generate σ and anyone can verify the validity of σ using U’s publ...
متن کامل34 Network Security and Secure Applications Attack Prevention @bullet Attack Avoidance @bullet Secret Key Cryptography @bullet Public Key Cryptography @bullet Authentication and Digital Signatures @bullet Attack and Intrusion Detection 34.1 Introduction
34.
متن کاملLecture 15 - Digital Signatures
Definition of digital signatures. Recall that we had the following picture: Private Key Public Key Secrecy Private Key Encryption Public key Encryption Integrity Message Authentication Codes (MAC) ?? Digital signatures complete this picture by giving a public key analog of message authentication codes. Digital signatures were suggested by Diffie and Hellman in their seminal paper, but unlike th...
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