Adding playfair-cipher written in C language and also updating Quick_hull.cpp with commented output
Raven1233 opened this issue · comments
This is a(n):
- [Yes ] New algorithm
- [Yes ] Update to an existing algorithm
- Error
- Proposal to the Repository
Details:
The Playfair Cipher Encryption Algorithm:
The Algorithm consists of 2 steps:
1)Generate the key Square(5×5):
The key square is a 5×5 grid of alphabets that acts as the key for encrypting the plaintext. Each of the 25 alphabets must be
unique and one letter of the alphabet (usually J) is omitted from the table (as the table can hold only 25 alphabets). If the
plaintext contains J, then it is replaced by I.
The initial alphabets in the key square are the unique alphabets of the key in the order in which they appear followed by the
remaining letters of the alphabet in order.
- Algorithm to encrypt the plain text: The plaintext is split into pairs of two letters (digraphs). If there is an odd number of
letters, a Z is added to the last letter.
@AdiChat Sir, I have added the PR. Please review it