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Except from using password, can I use a digital cert to assign for encoding the password to prevent people open the zip file? Thanks.

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up vote 1 down vote accepted

According to Wikipedia

PKWARE SecureZIP also supports … Digital Certificate-based encryption

Or you could use something like PGP to encrypt a Zip symmetric-encryption password that you want to exchange with another person.

Or you could use PGP to encrypt a zip file (with or without Zip password protection)

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