blocks|key|2081824|text|原来你所要做的就是选择左侧面板上的“我的证书”，它就会启用.p12选项。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2081825|​|2081826|📷|atomic|offset|length|2081827|2081828|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/8f299980eb53e4a7ddf4b0d567baa83e.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

Turns out all you have to do is select &quot;My Certificates&quot; on the left panel and it enables the .p12 option.
<a href="https://i.stack.imgur.com/uLlex.png" rel="noreferrer"><img src="https://i.stack.imgur.com/uLlex.png" alt="enter image description here" /></a>

blocks|key|2081863|text|在我的例子中，我将.cer文件设置为“系统”选项，而不是“登录”选项。然后我将.cer文件从“系统”移动到“登录”选项，然后按“我的证书”，然后导出它.p12是ok。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2081864|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case, I made the .cer file into "system" option not the "login" option. then I move the .cer file from the "system" to "login" option then press "My Certificates" then export it .p12 is ok..

blocks|key|2081759|text|Apple不会存储您用来创建证书的私钥。你需要在你的机器上已经有一个副本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2081760|听起来可能是其他人请求了您正在尝试下载的推送证书，或者您在另一台计算机上请求了它。如果找不到私钥，则需要创建一个新的证书请求并通过开发人员门户上传。|2081761|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Apple do not store the private key you used to create your certificates. You need to already have a copy of it on your machine.

It sounds as if perhaps either somebody else requested the push certificate you're trying to download, or you requested it on another machine. If you can't find the private key you will need to create a new certificate request and upload it via the developer portal.

blocks|key|1868187|text|除了验证证书是否由同一台计算机上的keychain+Access+->证书助手发出的证书请求颁发外，还要确保收到的.cer文件已安装到正确的密钥链中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1868188|最好的方法是在左边的密钥链下选择适当的密钥链，最可能是“登录”，确保在“类别”下选择“我的证书”，然后将.cer文件拖放到主文件列表区域。|1868189|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

In addition to verifying that the certificate was issued from certificate request from the Keychain Access -> Certificate Assistant on the same computer, ensure that the received .cer file is installed into the correct keychain. 

The best way to do this is select the appropriate keychain under the left Keychains, most likely 'login', ensure 'My Certificates' is selected under Category, then drag and drop the .cer file into the main file list area.

blocks|key|2081922|text|对我来说，不是右键单击Keychain+Access中的主证书行并选择Export，而是必须单击正在尝试导出的证书旁边的下拉箭头，然后右键单击该证书下面的条目，然后选择Export。那么您实际上选择的是私钥部分，而不是公钥部分。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2081923|entityMap^0|Z|6|2C|6|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

For me, instead of right-clicking on the main certificate row within Keychain Access and selecting <code>Export</code>, I had to click the drop-down arrow next to the certificate that I was trying to export and then right-click the entry below that and then select <code>Export</code>. Then you are actually selecting the private key part instead of the public key part.

blocks|key|2081937|text|在我的例子中，证书直到我按它的名字进行搜索时才出现！我甚至拍了一段视频作为证据。“登录”和“我的证书”都被选中，我经历了两次从头开始重新生成的完整流程，每次证书不在那里时，我都要导出.p12文件。一旦我在搜索栏中输入它的名称，它就会出现！:flip_table_emoji：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2081938|苹果，修好你的虫子！我生命中的两个小时再也不会回来了。|2081939|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

In my case, the certificate did not appear until I searched by its name! I even took a video as proof.
&quot;Login&quot; and &quot;My Certificates&quot; were both selected, I went through the full flow to regenerate it from scratch twice and every time the certificate was not there for me to export the .p12 file. Once I entered its name in the search bar it appeared!
:flip_table_emoji:
Apple, fix your bugs! 2 hours of my life that will never come back.

blocks|key|1868148|text|使您选择的是私钥而不是公钥，因为列表中可能同时包含这两种类型。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1868149|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Make you are selecting a private key and not a public key because you probably have both types on the list.

blocks|key|2081929|text|您可以使用Onesignal+provisionator+tool创建推送SSL证书。它是免费的，并且为你做了所有令人困惑的事情。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2081930|它会在你生成它的时候撤销你当前的文件，所以如果你是在线的，那么在上传到相关的地方时，快速上传是很重要的。|2081931|这对我的OneSignal推送通知很有效，但我看不出为什么它对其他推送通知不起作用。|2081932|entityMap|0|LINK|mutability|MUTABLE|url|https://onesignal.com/provisionator^0|5|S|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

You can use the <a href="https://onesignal.com/provisionator" rel="nofollow noreferrer">Onesignal provisionator tool</a> to create a push SSL certificate. It's free and does all the confusing bit for you.
It will revoke your current one as you generate it, so it's important to be quick when uploading it to the relevant place if you are live.
This worked with me for OneSignal push notifications, but I see no reason why it wouldn't work for other push notifications.

blocks|key|2081949|text|您需要在访问密钥链中选择[证书]选项卡。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2081950|​|2081951|📷|atomic|offset|length|2081952|2081953|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/6fbfbcc704fe14364daab427399d96ba.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

You need to select &quot;Certificates&quot; tab in Access Key Chain.
<a href="https://i.stack.imgur.com/Cd0o3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Cd0o3.png" alt="enter image description here" /></a>

I am using Urban airship in my application for push notification. So, I need to download the push SSL certificate from Apple developer portal. After downloading, I added that in keychain access. But no private key was created for the certificate. When I tried to right click and export the certificate, I was not able to export that as .p12 file as the .p12 file extension was disabled while saving. I am unable to attach the screenshots here due to lesser reputation.

Someone please tell me where is the issue here. How should I do that?

Unable to export Apple production push SSL certificate in .p12 format

我正在使用城市飞艇在我的申请推送通知。因此，我需要从Apple developer portal下载推送SSL证书。下载后，我在keychain access中添加了它。但是没有为证书创建私钥。当我尝试右击并导出证书时，由于.p12文件扩展名在保存时被禁用，我无法将其导出为.p12文件。我无法在这里附加截图，因为较少的声誉。谁来告诉我这里的问题在哪里。我该怎么做呢？

问无法以.p12格式导出Apple production push SSL证书
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