tiny AES128
works great as portable C library
how to use Initialization Vector (IV)
AXTLS:
FAQ
keys:
online generation
8266:
example code for TLS
another example
(check this one first)
certificates
chain file explanation and usage
explanation of process
another explanation/tutorial
Getting certificate chain to work for letsencrypt
root cert for letsencrypt needed (in PEM format)
there's extra spaces at the end of the cert. Take them out.
add BEGIN CERTIFICATE and END CERTIFICATE as “described”
here
.
confirm the cert is good/readable. Tips on that as well as converting between formats
here
convert to DER format using same link above
use
this
to find out how many characters long the DER format cert is
convert cert to hex using
this
References
view cert in
a hex editor
if needed
pointers, including identifying the correct root cert to us
letsencrypt certificates
how to get the root cert of a CA