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Plaintext is easily readable or, to be more accurate, decrypted/unencrypted text.
This is opposed to ciphertext, which is encrypted.
If you used an encryption algorithm to encode your message of "Hello, there" to "4hgu28fhdjf83291".
The plaintext form would be: "Hello, there"
The ciphertext form would be: "4hgu28fhdjf83291"
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Write a program to dycrypt the text kpfkc to get original string India using string concept in c?
char cyphertext[] = "kpfkc"; char plaintext[sizeof(cyphertext)]; int i; for (i=0; i<sizeof(cyphertext); i++) plaintext[i] = cyphertext[i] - 2; Note: This is not portable, and depends on the USASCII character set.
What is key of hill cipher if we have plain text and cipher text?
Assume Plaintext = P, Ciphertext = C, and the Key = K. C = P * K Therefore, multiply both sides by the inverse of P and you will get: C * P^(-1) = K Or, (ciphertext) * (inverse plaintext) = key If the size of the key is known as well, then use that same size when creating P and C matrices.
Is standard email transfer secure Why not How would you make it secure?
No, email is transmitted in plaintext. A secure solution would involve encrypting your email or using a more secure protocol (secure ftp, ssh, https, etc)
Briefly define the monoalpabetic cipher?
A monoalphabetic cipher uses fixed substitution over the entire message, whereas a polyalphabetic cipher uses a number of substitutions at different positions in the message, where a unit from the plaintext is mapped to one of several possibilities in the ciphertext and vice versa.
What are2 examples of data encryption methods?
cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called a cipher) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is information (in cryptography, referred to as ciphertext). The reverse process, i.e., to make the encrypted information readable again, is referred to as decryption (i.e., to make it unencrypted).
