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Keychain Access User Guide
- Welcome
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- Get information about a certificate
- Determine if a certificate is valid
- Change the trust settings of a certificate
- Request a certificate from a certificate authority
- Add certificates to a keychain
- Create your own certificate authority
- Create self-signed certificates
- Issue new certificates
- Create a certificate preference
- Keyboard shortcuts
- Copyright
You can create a self-signed certificate using Certificate Assistant in Keychain Access. Self-signed certificates don’t provide the guarantees of a certificate signed by a certificate authority, but can be useful if the person signing it is trusted.
In the Keychain Access app
on your Mac, choose Keychain Access> Certificate Assistant> Create a Certificate.Enter a name for the certificate.
Choose an identity type, then choose the type of certificate.
For an explanation of certificate types, click Learn More.
To manually specify the information in the certificate, such as key pairs, extensions, and encryption, click “Let me override defaults,” then follow the instructions. If you have questions while creating your certificate, click Learn More.
Note: You can create RSA keys up to 4096 bits. RSA keys smaller than 2048 bits are no longer supported.
Click Create.
Review the certificate, then click Done.
on your Mac, choose Keychain Access> Certificate Assistant> Create a Certificate.See alsoWhat’s a certificate?
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