Question

In cryptography, what is cipher?
क्रिप्टोग्राफी में, सिफर (cipher) क्या है?
Select one:
a. Algorithm for performing encryption and decryption
एन्क्रिप्शन और डिक्रिप्शन के लिए एल्गोरिथ्म
b. Both (a) and (b)
A और B दोनों
c. None of the mentioned
उल्लेख में से कोई भी नहीं
d. Encrypted message
एन्क्रिप्टेड संदेश​

Answer 1

Answer:

The correct answer is...

a. Algorithm for performing encryption and decryption...

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Answer 2

Option A: Algorithm for performing encryption and decryption

In cryptography the cipher is:

• A cypher (or cypher) in cryptography is a set of predetermined steps that can be used as a technique to achieve encryption or decryption.
• Encipherment is a different, less frequently used term. Information is transformed into a code or cypher when it is encoded or enciphered.
• Any technique for changing a message to hide its meaning is a cypher. The phrase is also used interchangeably with ciphertext or a cryptogram to refer to the message's encrypted form.
• Ciphertext is plaintext that has been encrypted using a cryptographic algorithm. Ciphertext must first be decrypted (turned into plaintext) with a key before it can be read.
• The procedure used in the decryption cypher converts the ciphertext back to plaintext.

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