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In cryptography, a Schnorr signature is a digital signature produced by the Schnorr signature algorithm that was described by Claus Schnorr.It is a digital signature scheme known for its simplicity, among the first whose security is based on the intractability of certain discrete logarithm problems.
Proofs of knowledge are useful tool for the construction of identification protocols, and in their non-interactive variant, signature schemes. Such schemes are: Schnorr signature; They are also used in the construction of group signature and anonymous digital credential systems.
The Digital Signature Algorithm (DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. In a public-key cryptosystem, a pair of private and public keys are created: data encrypted with either key can ...
In public-key cryptography, Edwards-curve Digital Signature Algorithm (EdDSA) is a digital signature scheme using a variant of Schnorr signature based on twisted Edwards curves. [1] It is designed to be faster than existing digital signature schemes without sacrificing security.
Schnorr's contributions to cryptography include his study of Schnorr groups, which are used in the digital signature algorithm bearing his name. Besides this, Schnorr is known for his contributions to algorithmic information theory and for creating an approach to the definition of an algorithmically random sequence which is alternative to the ...
In the original paper by Schnorr, he defined y=g-x and therefore could rely on +x to have it work out mathematically. Markovisch 12:33, 6 May 2019 (UTC) The international Standard ISO/IEC defines SDSA and FSDSA (Schnorr and Full Schnorr DSA) as well as their EC pendants with s=k+ex.
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In cryptography, the Fiat–Shamir heuristic is a technique for taking an interactive proof of knowledge and creating a digital signature based on it. This way, some fact (for example, knowledge of a certain secret number) can be publicly proven without revealing underlying information.