> For the complete documentation index, see [llms.txt](https://tigerview.gitbook.io/vi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tigerview.gitbook.io/vi/khoa-hoc/cbca/module-1/chu-ky-so.md).

# Chữ ký Số

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