A cipher is a technique for encryption to conceal words or text by transposing or substituting other letters, numbers, or symbols for the original ones. Transposition and substitution together are frequently used. The ciphertext is another name for encrypted text. Ciphers are frequently used in email to prevent unauthorized users from reading an encrypted message and enable private communication. If you are a regular investor, you must have used bitcode method index AI to trade bitcoin.
How does cipher work?
A symmetric-key cryptosystem is claimed to contain ciphers where the message is encrypted and decrypted using the same key by both the recipient and the sender. A public-key cryptosystem consists of ciphers where data is encoded and decoded using a pair of keys. One is freely given to the public, and the other is identifiable only to the recipient. This program uses ciphers that use an asymmetric-key cryptosystem.
There are thousands of known ciphers. Some were created thousands of years ago by famous scientists or leaders; others were created only last week by a tech expert teenager.
What are the different cipher techniques?
In digital fraud, various approaches are employed to protect our data from hackers and other third parties. The data or message that results when some algorithms or approaches are used to modify plain text is known as ciphertext. The ciphertext is the short name for the process of turning plain text, or readable text, into unintelligible text. Below we shall discuss different cipher techniques being employed in the circumstances.
1. Caesar Technique:
In this technique, any other character, symbol, or number is used in place of the group of plain text characters. It is a highly ineffective method of text concealment. Each letter in the phrase is substituted three places lower in Caesar’s cipher. Now let us look at one instance. The text is just HUTBA. Each letter of the alphabet is changed three positions down in a Caesar cipher so that H becomes K, D becomes G, U becomes X, T becomes W, B becomes E, and A becomes D. The plain text, in this case, is HUTBA, and the ciphertext is KWED.
2. Monoalphabetic technique:
Each letter in plain text in monoalphabetic can be substituted with any other letter other than the original letter. In other words, any letter between B to Z can take the place of A. Due to random substitutions and abundant permutations and combinations, monoalphabetic ciphers are challenging to decipher.
3. Homophonic Substitution technique:
The main distinction between a homophonic substitution technique and a monoalphabetic cipher technique is that in the former, the alphabet is changed to a fixed alphabet or collection of fixed alphabets. In contrast, in the latter, it is changed to any other random alphabet aside from the original alphabet.
4. Polygram technique:
This cipher replaces plain text block by block instead of letter by letter.
5. Polyalphabetic substitution technique:
Cipher is a technique used in Polyalphabetic Substitution to encode alphabetic texts. For encrypting, it employs numerous substitution alphabets. The text is encoded using the Vigenere table or Vigenere square. The table has 26 alphabets in different rows, each circularly moved to the left based on the alphabet before it, creating the equivalent of all twenty-six possible Caesar Ciphers. The cipher uses a distinct letter from one of the rows at various stages of the encryption algorithm.
6. Playfair technique:
The method employed to encode the data is cryptography. This technique has the following steps:
- Matrix development and population
- The encryption procedure.
7. Hill Cipher technique:
The Hill cipher technique functions simultaneously on several alphabets. The Hill cipher functions as follows:
- Each letter in the plain text is assigned a number.
- The plain text message is organized in number format as a matrix of numbers based on the 1st
- Multiply the above matrix with a selected key which must be the size of the rows of the plaintext matrix.
- Both matrices of step 2 and step 3 are then multiplied.
- Take out the mod 26 value of the above result.
- The numbers are now translated into letters.
- The answer becomes the ciphertext.
Conclusion
Ciphers are essential in trading cryptocurrency that supports DeFi applications such as bitcoin.
