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Posted: September 9th, 2022
PKI introduction
The PKI refers to a set of software, hardware, processes, and policies needed to develop, manage, dispense, utilize, store, and repeal digital certificates and public keys. PKIs are the groundwork that makes it possible to utilize technologies like encryption and digital signatures, across big user populations (Ballad, Ballad & Banks, 2010). As such, PKIs distribute the components vital for a safe and trusted business environment for the growing Internet of Things (IoT) and e-commerce. It is important to note that PKIs utilizes a mixture of asymmetric and symmetric processes. An initial “handshake” between the parties that are communicating utilizes asymmetric encryption to safeguard the secret key which is exchanged to make symmetric encryption possible.
How messages are sent using PKI
PKI applies the use of encryption. Encryption is carried out so as to ensure the privacy and safety of information sent from one person to another. Keys are utilized in locking (encrypting) and unlocking (decrypting) the data is transmitted (Winter et al., 2015). This technique works when the key that is utilized is kept totally secure, and as a secret between the two parties that are communicating. In this regard, in order to send a message, a key is used to encrypt the message. Notably, a key denotes to a long string of bits-a number. Once the message is encrypted using a key, it is sent.
How messages are received using PKI
In order to receive messages utilizing a PKI, the recipient should have a private key (provided by the sender). This is the key that is going to decrypt the message. As such, the first step entails decrypting the one time symmetric key with the private key. The next step is to decrypt the message utilizing a one-time symmetric key.
References
Ballad, B., Ballad, T., & Banks, E. (2010). Access control, authentication, and public key infrastructure. Jones & Bartlett Publishers.
Winter, G., Periaux, J., Fox, P., Ecer, A., & Satofuka, N. (2015). Parallel computational fluid dynamics 2004: Multidisciplinary applications. Elsevier.
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