Let string be “zap” and the key is 1 then “z” is replaced by “a”.Įncryption and Decryption of a string Implementation in Python def Encryption(s,k): Similarly, the same process is applied on the whole string if you get to the end of the string then you must start from the beginning again. Here I am changing the values of alphabets according to the key that is the first alphabet in the string is “S” so the value is shifted by 5 places from S that is “T”, “U”, “V”, “W”, “X” so the output is “X”. Now let us see simple encryption and decryption example and then go for the final implementationĮnter the string to encrypt and decrypt: Shravan ![]() Now, What is this ciphertext it is nothing but the encrypted text of your given message it is non-understandable but can be only understood after decrypting.ĭecryption: It is the reverse process of encryption so the ciphertext will be converted back to plaintext using the same key which we used earlier or maybe a different one. What is meant by encryption and decryption of a stringĮncryption: It is the process of converting a plain text string into a ciphertext. These are very interesting and are used for security purposes. Now what are this Encryption and Decryption, Why should you know about them? Well, ![]() In this post, we will learn a very interesting concept from cryptography that is Encryption and Decryption of strings using Python.
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