How to Create an iOS Development Certificate and Wildcard Provisioning Profile

Overview

This guide explains how to create an iOS Development Certificate, export it as a P12 file, and generate a Wildcard Provisioning Profile through the Apple Developer Portal. These files are required for signing and installing iOS applications during development and testing.

Prerequisites

Before you begin, ensure you have:

• Device UDIDs for any test devices that need to be included in the provisioning profile.

• Permissions to create certificates and provisioning profiles within the Apple Developer account.

Part 1: Create an iOS Development Certificate

Step 1: Create a Certificate Signing Request (CSR)

1. Open Keychain Access on your Mac.

2. Navigate to:

   Keychain Access → Certificate Assistant → Request a Certificate From a Certificate Authority

3. Enter the following details:

   • Email Address: Your Apple Developer account email

   • Common Name: Your name or company name

4. Select Saved to disk.

5. Click Continue.

6. Save the CSR file.

Recommended filename:

ios_cert_request.csr

Step 2: Create an Apple Development Certificate

1. Navigate to the Apple Developer Portal:

   https://developer.apple.com/account

2. Sign in using your Apple Developer account.

3. Open Certificates, Identifiers & Profiles.

4. Select Certificates.

5. Click the + button.

6. Select iOS App Development.

7. Upload the CSR file created in the previous step.

8. Generate the certificate.

9. Download the generated .cer file.

Step 3: Install the Certificate

1. Double-click the downloaded .cer file.

2. The certificate will automatically be installed in:

   Keychain Access → Login → Certificates

3. Verify that the certificate appears as:

   Apple Development: Your Name

4. Ensure a private key is attached beneath the certificate.

Step 4: Export the Development Certificate as P12

1. Open Keychain Access.

2. Navigate to:

   Login → Certificates

3. Locate:

   Apple Development: Your Name

4. Expand the certificate to view the attached private key.

5. Right-click the certificate.

6. Select Export.

7. Save the file as:

   ios_development.p12

8. Create and confirm a password when prompted.

Part 2: Create a Wildcard App ID

Step 5: Create a Wildcard App ID

1. Navigate to:

   Apple Developer Portal → Identifiers

2. Click the + button.

3. Select App IDs.

4. Configure the App ID:

   • Type: App

   • Bundle ID: com.*

   • Description: Wildcard Development App

5. Save the App ID.

Part 3: Register Test Devices

Step 6: Register Device UDIDs

1. Navigate to:

   Apple Developer Portal → Devices

2. Click the + button.

3. Add the UDID for each device that will be used for testing.

4. Save the device registrations.

Part 4: Create a Wildcard Development Provisioning Profile

Step 7: Create a Development Provisioning Profile

1. Navigate to:

   Apple Developer Portal → Profiles

2. Click the + button.

3. Select iOS App Development.

4. Select the previously created Wildcard App ID:

   com.*

5. Select the Apple Development certificate.

6. Select the test devices that should be included.

7. Enter a profile name.

Recommended name:

Wildcard_Dev_Profile

8. Click Generate.

9. Download the generated .mobileprovision file.

Step 8: Install the Provisioning Profile

1. Double-click the downloaded .mobileprovision file.

2. Xcode will automatically install the provisioning profile.

Outcome

Upon completion of this guide, you will have:

• An Apple Development Certificate.

• An exported P12 certificate file.

• A Wildcard App ID.

• Registered test devices.

• A Wildcard Development Provisioning Profile.

• A fully configured signing setup for iOS development and testing.