User Manual

Parameters: None

Returns: A 32-bit unsigned integer representing the number of seconds since the 'Epoch', or 1 January 1970.

TLS Root Certificate Management

Connecting to secure TLS/SSL based servers requires a root certificate to verify that the certificate data from the

remote server is valid. A set of common root certificates is included in the Featherlib by default, but custom certificates

can also be added to the chain via the .addRootCA helper function, described below.

See the AdafruitTCP documention for more information on TLS and connecting to secure servers.

Default Root Certificates

By default, the following root certificates are included in Featherlib, meaning you only need to add a root certificate

authority if it isn't included in the list below.

These default root certificates cover many common websites without any additional effort on your part:

Baltimore CyberTrust Root

adafruit-download.s3.amazonaws.com (may include other Amazon S3 servers)

DigiCert High Assurance EV Root CA

twitter.com

facebook.com

github.com

GeoTrust Global CA

google.com

GeoTrust Primary Certification Authority - G3

adafruit.com

Starfield Services Root Certificate Authority - G2

aws.amazon.com

bool useDefaultRootCA ( bool enabled )

Enables the default list of root CAs in FeatherLib.

Note: These will be enabled automatically by default if you try to use the .connectSSL functions without having

previously added any custom root CAs via .addRootCA. This function is provided primarily to

disable

the default root

certificates since they consume a reasonable chunk of heap memory.

Parameters:

enabled: Set this to 'true' (1) to enable the default root CA list, or 'false' (0) to disable them.

Returns: 'True' (1) if the operation succeeded, otherwise 'false' (0).