Fingerprints to authenticate and encrypt messages.
If you are communicating with James via Apple Messages, you can turn on Verification, and make sure the Public Verification code of the person you're talking to matches:
APKTIDAKcuWwU0uV44YjjzCh03Q8HZv_ID5V8vbEYXdjHK9-GcMg
For more information, see Apple’s article.
If you would like to exchange signed and/or encrypted
email, James’ public key has
ID 88A1EDAE
and fingerprint
886E E5C1 8380 CAC2 02F4 7BC9 7086 32BF 88A1 EDAE
.
For more information, you can look
into Gnu
Privacy Guard, which is the suite of tools that James
uses.