Set up your cer­tifi­cate on iPhone or iPad

Mac Format - - APPLE SKILLS -

1 Trans­fer to your iPhone

The sim­plest way to trans­fer your ex­ported cer­tifi­cate is to email the p12 file to your­self. Make sure you set a strong pass­word on the file in the first place to pro­tect the cer­tifi­cate, in case it’s in­ter­cepted in tran­sit.

2 Open the p12 file

Mail on your iPhone, then lo­cate and open the mes­sage you sent to your­self. Tap the p12 file that’s at­tached to open it. Mail should in­di­cate the file is an Iden­tity Cer­tifi­cate, but that it’s not signed. Tap In­stall to con­tinue.

3 In­stall the pro­file

En­ter your de­vice’s pass­code, then read the warn­ing about the pro­file not be­ing signed. That’s fine; just tap In­stall twice to con­tinue. En­ter the pass­word you ap­plied to the p12 file, then tap Next, fol­lowed by Done.

4 View your pro­file

If the pro­file doesn’t au­to­mat­i­cally show up, switch to the Set­tings app and go to Gen­eral > Pro­files. Tap your name to view your pro­file; this is also where you’d go if you ever want to delete the cer­tifi­cate from your iOS de­vice.

5 Link it to your ac­count

Go to Mail, Con­tacts, Cal­en­dars at the top of Set­tings and tap your ac­count. If it’s the pri­mary iCloud one, tap Mail > Ad­vanced > Ad­vanced. If it’s a sec­ondary ac­count, tap its name > Mail > Ad­vanced. For oth­ers, tap their name > Ad­vanced.

6 En­able S/MIME

At the bot­tom of the page you’ll find an S/MIME switch. Turn on that switch and then tap the Sign row that ap­pears be­low it. To en­able dig­i­tal sign­ing of your mes­sages, turn on the Sign switch; your cer­tifi­cate should be vis­i­ble and se­lected.

7 En­crypt by de­fault

Tap Back and then tap the op­tion to en­crypt mes­sages by de­fault, and then turn on its switch; it’ll only be ap­plied for re­cip­i­ents who’ve shared their S/MIME cer­tifi­cate with you. Re­turn to the top of your ac­count set­tings and tap Done.

8 Get ready to use it

All fu­ture mail you send from this ac­count will be au­to­mat­i­cally signed by de­fault. To en­crypt mes­sages with a se­lected con­tact, first re­quest that they send you a mes­sage that has their own dig­i­tal sig­na­ture at­tached.

9 Add their cer­tifi­cate

Tap the sender’s name in the From part of their mes­sage’s header, then tap View Cer­tifi­cate. If you’re happy with it, tap In­stall to make it trusted, then tap Done. From now on your con­ver­sa­tions with that per­son will be en­crypted, too.

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