CRYPTOGRAPHY AND CYBER SECURITY
What is Cryptography?
Cryptography is the science of encrypting or decrypting information to prevent
unauthorized access.
It helps secure the storage and transmission of data between willing parties.
Encryption is the primary route for employing cryptography by adding certain
algorithms to jumble up the data.
Decryption is the process of reversing the work done by encrypting information so
that the data becomes readable again.
Both of these methods form the basis of cryptography.
How Does Symmetric Key Cryptography Work?
Symmetric key cryptography relies on a single key for the encryption and decryption
of information.
Both the sender and receiver of the message need to have a preshared secret key
that they will use to convert the plain text into ciphertext and vice versa.
The secret key should not be sent along with the ciphertext to the receiver because
that would defeat the entire purpose of using cryptography.
Key exchange can be done beforehand using other algorithms like the Diffie-Hellman
key exchange protocol.
Symmetric key cryptography involves the use of a single encryption key that must be
kept secret by both the sender and receiver to prevent snooping by malicious
actors.
The encryption key is used for both encryption and decryption of messages.
The entire architecture of symmetric cryptography depends on the single key being
used, making it of paramount importance to keep it secret on all occasions.
In symmetric key cryptography, there are two categories of ciphers that can be
employed:
What is Cryptography?
Cryptography is the science of encrypting or decrypting information to prevent
unauthorized access.
It helps secure the storage and transmission of data between willing parties.
Encryption is the primary route for employing cryptography by adding certain
algorithms to jumble up the data.
Decryption is the process of reversing the work done by encrypting information so
that the data becomes readable again.
Both of these methods form the basis of cryptography.
How Does Symmetric Key Cryptography Work?
Symmetric key cryptography relies on a single key for the encryption and decryption
of information.
Both the sender and receiver of the message need to have a preshared secret key
that they will use to convert the plain text into ciphertext and vice versa.
The secret key should not be sent along with the ciphertext to the receiver because
that would defeat the entire purpose of using cryptography.
Key exchange can be done beforehand using other algorithms like the Diffie-Hellman
key exchange protocol.
Symmetric key cryptography involves the use of a single encryption key that must be
kept secret by both the sender and receiver to prevent snooping by malicious
actors.
The encryption key is used for both encryption and decryption of messages.
The entire architecture of symmetric cryptography depends on the single key being
used, making it of paramount importance to keep it secret on all occasions.
In symmetric key cryptography, there are two categories of ciphers that can be
employed:
