How PKI ensures the secure electronic transfer of information?
How PKI ensures the secure electronic transfer of information?

Steam engines, digital technology, and mass production, our world, and businesses prospered to a great extent. Due to increased dependency on electronic transactions and digital information standards, policies and regulations of security have also changed. All we need in the digital world is to update systems timely. Secure systems utilize digital credentials to deal with the threats of malicious insiders and cyber attacks. It defines usage privileges to entities and users to access critical data resources and sensitive information. If you want to go beyond to set different identities to services, devices, and entities with the help of digital certificates and signatures, PKI performs all these activities. Can we ensure information security without PKI? How PKI ensures the secure electronic transfer of information? Stay with us right there and get answers to all of your questions. 

PKI is all about encryption of data

The security of data and information in businesses is the biggest challenge nowadays. Communication over the internet, providing us many benefits and helping in generating significant revenues. But it is also increasing the fear of identity theft, malicious code injections, ransomware, trojans, and many other such kinda hacking techniques. So, PKI, by utilizing SSL/TSL encrypts the data before communication over the internet. If you say that PKI made the e-commerce market practical, then it would not be wrong. Because of the encryption of data, PKI ensures confidentiality, non-repudiation, authorization, authentication, and integrity in any data. 

Two key encryption 

How PKI works? It works mainly on the asymmetric and symmetric cryptography concepts by providing users with a set of keys. The public keys used for encrypting the data and private keys for decrypting the data. Only the authentic users with their private keys can decrypt the data. The first rule to implement ultimate security in any organization is to manage who has access. So, mainly PKI is providing authentication, but how does it work? 

As we mentioned above, that PKI gives unique identities to servers, users, and computer systems. The certificate authority manages and checks these unique identities and reject false entities from the systems after authentication. Certificate authority also authorizes the registration authority to make available digital certificates to users. The encrypted certificate database is responsible for managing the requested, received, and revoked certificates of both CA and RA. 

Classification of symmetric and asymmetric encryption in PKI

Public key infrastructure uses asymmetric and symmetric key encryption. The symmetric key used during the initial exchange of data between two parties. For efficient and robust encryption, public-key encryption, also known as the asymmetric cryptography uses two keys. The secret and public keys both used for plain text encryption. Both encryption schemes used in PKI and where there is a need to make the encryption powerful to a great extent, the combo of symmetric and asymmetric helps a great deal. Let’s explore the different ways by which PKI ensures the secure electronic transfer of information. 

PKI prevents from malware injections and tampering 

The public key infrastructure protects and digitally signs the data after verification of legitimate code. It protects the data from getting tampered. Also, because of data disclosure only after the authentic user decrypt it with the private key, there are no chances of malware injections and trojans, etc. Not only malware injection, you can also prepare your business against cyber security attacks.

Tamper evident seal 

PKI forms the digital signatures for the verification of authentic users. After the verification process gets completed, it creates a tamper-evident seal and makes it a compliant and secure document. 

Assigning unique identities to each IoT endpoints 

The public key infrastructure builds the trust and unique identities in IoT ecosystems. Every single endpoint and device comprised of unique ids and digital certificates to communicate with each other securely over the internet. 

Properly configured certificates 

Access control policies and enabling the multi-factor authentication approve the devices, users, and entities who have unique ids and digital certificates. Only the supported devices and nodes can communicate and access the critical folders with sensitive data over the network. Moreover perform penetration testing periodically to check whether the security devices configured properly or not.

Shield against phishing and data loss 

PKI follows the procedure of firstly verifying the message origin, so there is no chance of non-repudiation. The nodes and let’s suppose internal emails without verified certificates go to spam folders, and there are fewer chances that important business information falls for phishing attacks. 


The above discussion depicts the importance of PKI in ensuring the security of businesses. You can not implement proper security controls in any organization without considering the access controls and authentication parameters. Only encryption through symmetric keys can fulfill the parameters of confidentiality, but PKI assigns the right to an authentic user to decrypt the critical data information. If any organization also wants to build the service trust, then authentication and authorization are essential factors. Without PKI, non-repudiation and authentication can not be acheived. So, it is a crucial factor and ensures the security of information and data in any business. 

To make yourselves safe from cyber attacks, it is also essential to be updated with the latest security tools and hacking techniques. Mstweaks keeps you updated with all the latest technological advancements. For any queries or discussion on any topic related to information security, contact us


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