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It involves using asymmetric cryptography techniques to generate a unique digital identifier that can be attached to a document or message. This identifier, known as a digital signature, is generated using a private key and can only be verified using the corresponding public key. Digital signatures are widely used in electronic communications, online transactions, and other scenarios where the authenticity and integrity of data need to be ensured. They provide a secure way to verify the identity of the sender and detect any unauthorized modification of the signed content. The Wikipedia page on digital signatures provides a comprehensive overview of the concept, including its history, cryptographic algorithms used, mathematical principles, and applications in various fields. It also covers the legal aspects and regulatory frameworks surrounding digital signatures in different countries. Additionally, the page explores the challenges and vulnerabilities associated with digital signatures, such as key management, certificate revocation, and potential attacks on the underlying cryptographic algorithms. The page serves as a valuable resource for anyone seeking a deeper understanding of digital signatures and their role in ensuring the security and authenticity of digital communications.