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Learn how DSA works as a public-key cryptosystem for digital signatures, based on modular exponentiation and discrete logarithm problem. See the key generation, signing and verification operations, and the history and specification of DSA.
A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. Learn about the definition, history, methods, and applications of digital signatures, as well as the difference between digital and electronic signatures.
Learn about the digital signature scheme based on discrete logarithms, invented by Taher Elgamal in 1985. Find out how it works, its history, security and variants.
Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee the code integrity. Learn how code signing works, what benefits it provides, and how to use it in different platforms and scenarios.
ECDSA is a cryptographic algorithm that uses elliptic-curve cryptography to sign messages. Learn how it works, its key and signature sizes, its verification and recovery methods, and its security issues.
FIPS 186-5 is the latest revision of the U.S. standard for digital signatures, published in 2023. It defines the Digital Signature Algorithm, RSA signatures, and Elliptic Curve Digital Signature Algorithm.
Schnorr signature is a digital signature scheme based on discrete logarithm problems and hash functions. It is simple, efficient and secure, and can be used for identification and signature purposes.
EdDSA is a fast and secure signature scheme based on Schnorr signatures and twisted Edwards curves. Ed25519 is the variant of EdDSA that uses SHA-512 and Curve25519, and is used in SSH, GnuPG, and other applications.