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Should I use PEM or DER format for certificates?

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davidfellowes@gmail.com
davidfellowes@gmail.com
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A Czech government site needs a root certificate installed in my MacBook Air running Lion OS X. They offer 18 versions: Root QCA, Qualified CA, Public CA, Root QCA 2, Qualified CA 2 and Public CA 2, each in DER, PEM and/or TXT formats. Which should I use?

A Czech government site needs a root certificate installed in my MacBook Air running Lion OS X. They offer 18 versions: Root QCA, Qualified CA, Public CA, Root QCA 2, Qualified CA 2 and Public CA 2, each in DER, PEM and/or TXT formats. Which should I use?

Ọ̀nà àbáyọ tí a yàn

They will probably all work including the TXT (base64) version, so just choose one format and if it doesn't work then try that same certificate in another format.

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cor-el
cor-el
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Ọ̀nà àbáyọ Tí a Yàn

They will probably all work including the TXT (base64) version, so just choose one format and if it doesn't work then try that same certificate in another format.