Convert p12 APNS certificate to base64 string

Question

I want to send the .p12 file of APNS certificate to One Signal API, but I need first to convert the .p12 file to base64 string. How do I do that? The API documentation is below: https://documentation.onesignal.com/reference#create-an-app

The script that I have tried but did not work: new Buffer(fs.readFileSync(__dirname + "/ios_push_certificate.p12", 'binary')).toString('base64') — anestis, Sep 21 '16 at 10:09

score 17 · Answer 1 · answered May 09 '20 at 12:00

17

If you're on a Mac you can use the base64 utility that comes with Mac.

base64 -i certificate.p12 -o outputfile

answered May 09 '20 at 12:00

Nuno Gonçalves

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Is it possible to reverse this process? – SPatel Apr 26 '21 at 06:10
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I mean base64 to p12 – SPatel Apr 26 '21 at 06:11
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@SPatel ```base64 --decode -i outputfile > certificate.p12``` – Dnyaneshwar Harer Apr 14 '23 at 04:09

score 1 · Answer 2 · answered Sep 21 '16 at 00:46

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This depends on the programming language you are using.

For example, here's how to do it in Ruby:

base64_encoded_p12 = Base64.encode64(File.read('/path/to/your/file.p12'))

answered Sep 21 '16 at 00:46

Gdeglin

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score 0 · Accepted Answer · answered Sep 22 '16 at 12:38

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new Buffer(fs.readFileSync(__dirname + "/ios_push_certificate.p12")).toString('base64')

That is the correct script after all.

answered Sep 22 '16 at 12:38

anestis

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score 0 · Answer 4 · answered Oct 15 '21 at 08:33

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You can use this on Linux

base64 file.p12

To write the base64 output to any file, you can use this

base64 file.p12 > output.base64

Note: This works for any files not only .p12

answered Oct 15 '21 at 08:33

harshaaliaschinna

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Convert p12 APNS certificate to base64 string

4 Answers4