How are certificates used for encryption?
An SSL/TLS certificate is just one part of the data encryption process that works based on public key infrastructure (PKI) and public key encryption. It’s a digital file that contains information that helps your web server validate and establish a secure, encrypted connection.
Do certificates utilize asymmetric keys?
For example, in SSL communications, the server’s SSL Certificate contains an asymmetric public and private key pair. Then sends it to the server. Server decrypts the encrypted session key using its asymmetric private key to get the symmetric session key.
What do you need to know about X509 certificate?
An X509 certificate is a method of exchanging public keys. It sounds like the vendor probably wants you to continue to AES encrypt and then encrypt the AES key with their public key so that you can transmit the AES key without it being susceptible to being intercepted.
How is an X.509 certificate used in cryptography?
One of the structural strengths of the X.509 certificate is that it is architected using a key pair consisting of a related public key and a private key. Applied to cryptography, the public and private key pair is used to encrypt and decrypt a message, ensuring both the identity of the sender and the security of the message itself.
What do you need to know about X.509 key usage?
X.509 “Key Usage” defines what the issuer allows the certificate to be used for. Remember that not all applications follow this requirement however. There are several extensions which restrict usages for a certificate. A basic certificate, without any extension, is deemed “fit for any purpose”, as far as X.509 is concerned.
How are X.509 certificates used in Azure IoT?
You can use X.509 certificates to authenticate devices to an Azure IoT Hub. A certificate is a digital document that contains the device’s public key and can be used to verify that the device is what it claims to be. X.509 certificates and certificate revocation lists (CRLs) are documented by RFC 5280.