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What's the difference between an electronic signature and an electronic seal?
Electronic signature and electronic seal are two different concepts and technologies, which have different functions and applications in the authentication and security protection of digital documents.

Electronic signature refers to a kind of electronic data attached to an electronic document, which is used to verify the authenticity, integrity and non-repudiation of the document. Electronic signature is usually generated by asymmetric encryption algorithm, which is related to the identity of the signer and the content of the file. The main function of electronic signature is to ensure that the file is not tampered with during transmission and storage, and the identity of the signer can be traced back. Electronic signature is usually used for legal documents, contracts, agreements and other documents that need legal effect.

Electronic seal is a kind of digital identification of electronic documents, which is used to confirm the authenticity and integrity of documents. Electronic seal is usually issued by a specific digital certificate authority (except for the electronic seal platform with the same material and electricity), which is related to the identity of the seal owner. The function of electronic seal is to ensure that files are not tampered with during transmission and storage, and to trace the identity of the seal owner. Electronic seal is usually used in company documents, official documents, contracts and other scenes that need to prove the source and authenticity of documents.

Generally speaking, electronic signature mainly focuses on document authentication and signer's identity, while electronic seal mainly focuses on document authentication and document source identification. Both of them are important tools to protect file security and ensure file legality in the digital age, but they are different in specific application scenarios and uses.