I see, thanks for your reply. 在2025年4月25日星期五 UTC+8 02:30:58<dke...@mozilla.com> 写道：
> Generally speaking, certificates are represented internally as DER in > Firefox. PEM is just base64-encoded DER with line breaks and a "-----BEGIN > CERTIFICATE-----"/"-----END CERTIFICATE-----" header/footer. When importing > a certificate, if it's PEM, Firefox will decode it by stripping out the > header and footer and converting the base64 to the original DER. When > exporting a certificate as PEM, Firefox will convert the DER to base64 and > add line breaks and the header and footer. > > On Thu, Apr 24, 2025 at 4:14 AM 饼小干 <bingxi...@gmail.com> wrote: > >> Thank you for your response. I would like to understand how Firefox >> handles format conversion. >> As you mentioned, PEM certificates can be exported from the viewer. So, >> when viewing a DER format certificate, how does Firefox perform the format >> conversion when exporting it to PEM? Similarly, when importing a >> certificate into the certificate manager, is it possible to import a DER >> certificate in PEM format? If so, how is this format conversion implemented? >> >> 在2025年4月24日星期四 UTC+8 02:08:28<dke...@mozilla.com> 写道： >> >>> Firefox can import DER or PEM certificates in the certificate manager. >>> In the certificate viewer, Firefox exports PEM. >>> What is it you're trying to do? If you just want to convert PEM to DER >>> or vice-versa, something like openssl (or even a base64 encoder/decoder) >>> would probably be easier to use. >>> >>> On Wed, Apr 23, 2025 at 3:21 AM 饼小干 <bingxi...@gmail.com> wrote: >>> >>>> Does Firefoxe browser involve format conversion when importing or >>>> exporting digital certificates, such as importing local DER format >>>> certificates into PEM format or exporting browser DER format certificates >>>> into PEM format? If so, could you please tell me how to perform such >>>> format >>>> conversions accurately? >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "dev-pl...@mozilla.org" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to dev-platform...@mozilla.org. >>>> To view this discussion visit >>>> https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/09cab96a-f65d-4fbb-9b7a-564b87897cdan%40mozilla.org >>>> >>>> <https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/09cab96a-f65d-4fbb-9b7a-564b87897cdan%40mozilla.org?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- You received this message because you are subscribed to the Google Groups "dev-platform@mozilla.org" group. To unsubscribe from this group and stop receiving emails from it, send an email to dev-platform+unsubscr...@mozilla.org. To view this discussion visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/18433bae-d6c1-4b24-a648-9406ce812e38n%40mozilla.org.
