What is the objective of digital signature brainly?
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Answer:
A birthday attack is a type of cryptographic attack that exploits the mathematics behind the birthday problem in probability theory. This attack can be used to abuse communication between two or more parties. The attack depends on the higher likelihood of collisions found between random attack attempts and a fixed degree of permutations (pigeonholes). With a birthday attack, it is possible to find a collision of a hash function in {\textstyle {\sqrt {2^{n}}}=2^{n/2}}{\textstyle {\sqrt {2^{n}}}=2^{n/2}}, with {\textstyle 2^{n}}{\textstyle 2^{n}} being the classical preimage resistance security. There is a general (though disputed[1]) result that quantum computers can perform birthday attacks, thus breaking collision resistance, in {\textstyle {\sqrt[{3}]{2^{n}}}=2^{n/3}}{\textstyle {\sqrt[{3}]{2^{n}}}=2^{n/3}}.
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DIGITAL PRESENTATION
Digital signature:
A digital signature or digital signature scheme is a mathematical scheme to denote the authenticity of a digital message or document. A valid digital signature assures the recipient that the message was produced by a known sender and was not altered in transit. Digital signatures are commonly used in software distribution, financial transactions, and other such cases where counterfeiting and tampering detection is more important.
Digital signatures are often used to implement electronic signatures, a broad term that refers to any electronic data that accompanies the purpose of a signature, but not the use of a digital signature in all electronic signatures. is done.
In some countries, including the United States and the European Union, electronic signatures have legal significance. However, the laws relating to electronic signatures do not always clarify whether they are used here in the sense of digital seedwriting signatures and, therefore, their importance, to some extent, is misleading, aside from the legal definition.
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