Khác biệt giữa các bản “Chữ ký điện tử”

* [ Introduction to cryptography] from the PGP international website
* [ OpenOffice Electronic Signatures and Security specification (OpenOffice format)], also in [ pdf format]. Incorporates standards for document format and XML Digital Signatures. Includes a comparison of document signature software and features from Adobe (Acrobat), Microsoft (Word) and Mozilla.
* [] chu ky so
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