Abandon key.pem file to on-the-fly key validation

[SJCaldwell]

Static keys don't allow for rolling changes with Microsoft's public key.

It is important to note that these keys rollover on a periodic basis and, in an emergency, could be rolled over immediately. All applications that use Azure AD should be able to programmatically handle the key rollover process or establish a periodic manual rollover process.

As Microsoft states here, those applications that roll their own API interaction instead of using a supported azure library will have to be wary to update public keys.

As a security-critical application, we cannot afford to have a static key that needs updating.

We must be able to poll Microsoft's key repository to ensure our key is up-to-date. I used a node library to convert the jwk to a pem file that openssl could use for validation previously, but I'll have to do it in C code (int jwk_to_pem_rsa(cJSON jwk){...}) instead.

[Jnchi]

Static keys don't allow for rolling changes with Microsoft's public key.

It is important to note that these keys rollover on a periodic basis and, in an emergency, could be rolled over immediately. All applications that use Azure AD should be able to programmatically handle the key rollover process or establish a periodic manual rollover process.

As Microsoft states here, those applications that roll their own API interaction instead of using a supported azure library will have to be wary to update public keys.

As a security-critical application, we cannot afford to have a static key that needs updating.

We must be able to poll Microsoft's key repository to ensure our key is up-to-date. I used a node library to convert the jwk to a pem file that openssl could use for validation previously, but I'll have to do it in C code (int jwk_to_pem_rsa(cJSON jwk){...}) instead.

aadd - Azure Active Directory Daemon?

Source: src/getkeys.c

See also: pam_ftp, pam_mkhomedir, pam_userdb

LDAP authentication using pam_ldap and nss_ldap

Simple example of daemon for Linux (GitHub)

[Jnchi]

https://github.com/CyberNinjas/pam_useradd