Questions Technology

What are the advantages and disadvantages of classical cryptography?


Joseph T Ortega

Be a Warrior and not a Worrier

We are living in an era of the cyber world, where we are witnessing advancements on a daily basis. One such massive development that revolutionized our way of living is the Internet. In the present scenario, we rely on the Internet for almost all our daily tasks, including management of all our finances.

Before hopping directly into the main topic, let us first know about Cryptography.

What is Cryptography?    

Cryptography in simple terms means the art of writing any information in code language, which can be read only to a group of selected individuals. It is the art of encrypting any important document to prevent unauthorized users from accessing the same.

Classical Cryptography was generated by hand and was used to deliver secret messages and prevent enemies from accessing the information.

Let us move forward to the advantages and disadvantages of classical cryptography.


  • Classical Cryptography is independent of the medium of transmission, and hence can be used to transmit highly sensitive data over long distances. 

  • Classical Cryptography is highly flexible and can be implemented in hardware, software, or a combination of both.

  • Classical Cryptography does not require the use of computers or any such costly devices, and also classical cryptography does not require any special specification for the medium of transmission (courier), and thus considered as a cheap way of encryption of sensitive information.

  • The one-time pad algorithm in classical cryptography is practically uncrackable.

  • When used properly, classical cryptography protects your plain text from all sorts of casual snooping.


  • The algorithms used in classical cryptography are not completely free from loopholes. As a result of such loopholes, the hackers can use it to crack the encrypted information and then use the same to perform all sorts of unethical activities.

  • The key size used n classical cryptography is comparatively smaller. Resulting, reduces the life expectancy of the algorithms.

  • Classical Cryptography is easier to implement, but it requires massive computation to make the algorithms effective.

  • The one-time pad is a cumbersome way of encrypting and requires a personal meeting for the exchange of the pads.

  • If you’re using classical cryptography without the use of OTP, all individuals having proper knowledge in cryptography will be able to crack your code and extract all information.

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