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Digital signature

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I need to sign a digital mail file. I am not sure how to do this. What does a digital signature do for me? And just as important, how can I verify the digital signature?

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You can get great reading on a JAR subscription (http://www.cs.princeton.edu/introcs/85application/jar/sign.html) and keep in mind that the JAR is a ZIP with MANIFEST, d say you go with a JAR signature and what it is.

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APPNOTE ( PKWare ZIP) ZIP. , SecureZip. ZIP-.

SecureBlackbox ZIP, ZIP-. PKWare , , .

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Zip files are compressed archives of one or more files and folders. Originally used for archiving purposes, they are now the usual way of ensuring that the person who is downloading files, such as programs or collections of documents, does not miss an important file. The software used to create the zip files does not contain a digital signature function, so you must use external programs. Click here to digitally sign.

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Source: https://habr.com/ru/post/1786221/

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