PKI security provides the encryption technologies required by electronic data interchange to meet the following security objectives:

• Authentication - The process of proving one's identity.
• Confidentiality - Ensuring that no one can read the message except the intended recipient.
• Integrity - Assuring the recipient that the received message has not been altered in any way from the original.
• Non-repudiation - A mechanism to prove that the sender/recipient really sent/received a message.