Cryptographic primitives | Digital signature
A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature, where the prerequisites are satisfied, gives a recipient very high confidence that the message was created by a known sender (authenticity), and that the message was not altered in transit (integrity). Digital signatures are a standard element of most cryptographic protocol suites, and are commonly used for software distribution, financial transactions, contract management software, and in other cases where it is important to detect forgery or tampering. Digital signatures are often used to implement electronic signatures, which includes any electronic data that carries the intent of a signature, but not all electronic signatures use digital signatures. Electronic signatures have legal significance in some countries, including Canada, South Africa, the United States, Algeria, Turkey, India, Brazil, Indonesia, Mexico, Saudi Arabia, Uruguay, Switzerland, Chile and the countries of the European Union. Digital signatures employ asymmetric cryptography. In many instances, they provide a layer of validation and security to messages sent through a non-secure channel: Properly implemented, a digital signature gives the receiver reason to believe the message was sent by the claimed sender. Digital signatures are equivalent to traditional handwritten signatures in many respects, but properly implemented digital signatures are more difficult to forge than the handwritten type. Digital signature schemes, in the sense used here, are cryptographically based, and must be implemented properly to be effective. They can also provide non-repudiation, meaning that the signer cannot successfully claim they did not sign a message, while also claiming their private key remains secret. Further, some non-repudiation schemes offer a timestamp for the digital signature, so that even if the private key is exposed, the signature is valid. Digitally signed messages may be anything representable as a bitstring: examples include electronic mail, contracts, or a message sent via some other cryptographic protocol. (Wikipedia).
Fundamental concepts of Digital Signatures are discussed. ElGamal and Schnorr Digital Signature schemes are analyzed. Digital signature standard is presented.
From playlist Network Security
Fundamental concepts of Digital Signatures are discussed. ElGamal and Schnorr Digital Signature schemes are analyzed. Digital signature standard is presented.
From playlist Network Security
Signatures - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
From playlist Applied Cryptography
Digital Signatures and Digital Certificates
This video explains the purpose of digital signatures and how they work. It begins by reviewing encryption and decryption using an asymmetric pair of keys, and then explains the significance of this when it comes to digital signatures, namely that it doesn’t matter which of the key pair i
From playlist Cryptography
In this video I briefly go over the advantage to the Schnorr signature, and how to sign and verify.
From playlist Cryptography and Coding Theory
A high-level explanation of digital signature schemes, which are a fundamental building block in many cryptographic protocols. More free lessons at: http://www.khanacademy.org/video?v=Aq3a-_O2NcI Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and
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MATH3411 Information, Codes and Ciphers This problem presents digital signatures via the DSS scheme. We are asked to find a public key from a private key, to generate a digital signature, and to check the validity of a received signature. Presented by Thomas Britz, School of Mathematics
From playlist MATH3411 Information, Codes and Ciphers
DSA Algorithm | DSA Algorithm Explained | Digital Signature Algorithm | Simplilearn
In this video on the DSA Algorithm, we learn about the global standard in authentication and verification of digital signatures. We learn about the basics of public key cryptography, and how digital signatures are used in today's internet sphere. Moving on, the origin and specifics of the
From playlist Cyber Security Playlist [2023 Updated]🔥
RSA and DSA Encryption Algorithms Explained | Cryptography & Network Security Tutorial | Simplilearn
In today's video on the RSA and DSA encryption algorithms explained, we cover the two most well known symmetric encryption algorithms in our cryptography & network security tutorial. We learn the steps needed to encrypt digital signatures and general data using RSA and DSA algorithms. The
From playlist Cyber Security Playlist [2023 Updated]🔥
Digital Signatures: RSA and El Gamal
We describe the theory and applications of digital signatures, and provide two examples of digital signature algorithms: RSA and El Gamal
From playlist PubKey
Bitcoin Q&A: Cryptographic Primitives
How are cryptographic primitives employed in Bitcoin? What are hashes and digital signatures? How does elliptic curve cryptography work? See details in Chapters 4 and 6 of 'Mastering Bitcoin': https://github.com/bitcoinbook/bitcoinbook/blob/f8b883dcd4e3d1b9adf40fed59b7e898fbd9241f/ch04.a
From playlist English Subtitles - aantonop Videos with subtitles in English