1. Amazon OpenID. https://docs.aws.amazon.com/cognito/latest/developerguide/open-id.html. Accessed on today. Amazon OpenID. https://docs.aws.amazon.com/cognito/latest/developerguide/open-id.html. Accessed on today.
2. BLAKE2 - fast secure hashing. https://blake2.net/. Accessed on today. BLAKE2 - fast secure hashing. https://blake2.net/. Accessed on today.
3. Facebook Login. https://developers.facebook.com/docs/facebook-login. Accessed on today. Facebook Login. https://developers.facebook.com/docs/facebook-login. Accessed on today.
4. Google Identity Platform -- OpenID Connect. https://developers.google.com/identity/protocols/OpenIDConnect. Accessed on today. Google Identity Platform -- OpenID Connect. https://developers.google.com/identity/protocols/OpenIDConnect. Accessed on today.
5. JSON Web Tokens. https://jwt.io/. Accessed on today. JSON Web Tokens. https://jwt.io/. Accessed on today.