+A digital signature is a mathematical scheme ensuring the authenticity and [Data integrity](/wiki/data_integrity) of digital messages or documents. Like a handwritten signature, it proves the sender's identity and confirms the data hasn't been tampered with, often relying on [Public-key cryptography](/wiki/public-key_cryptography) for its unbreakable bond.
+## See also
+- [Cryptography](/wiki/cryptography)
+- [Authentication](/wiki/authentication)
+- [Hashing](/wiki/hashing)
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