"Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption of ciphertext."
A type of cryptography that uses the same key for encryption and decryption.
Encryption: The process of converting plain text into a coded language that can only be deciphered with a secret key.
Decryption: The process of retrieving the original plain text from the encrypted message using the secret key.
Keys: Symmetric cryptography uses the same key for encryption and decryption. The key must be kept secret to prevent unauthorized access.
Block ciphers: Symmetric algorithms that encrypt data in fixed-size blocks, often using multiple rounds of substitution and permutation.
Stream ciphers: Symmetric algorithms that encrypt data in a continuous stream, typically by generating a key stream using a secret key and a non-secret initialization vector.
Modes of operation: Ways in which block ciphers can be used to encrypt large amounts of data, such as CBC, OFB, and CTR.
Key distribution: The process of securely sharing secret keys between two or more parties to enable secure communication.
Authentication: Techniques such as message authentication codes and digital signatures that ensure the integrity of messages and the identity of senders.
Key management: The process of generating, distributing, and storing secret keys securely to prevent unauthorized access.
Strength of cryptographic algorithms: The measure of the level of security offered by a particular cryptographic algorithm, often measured by the length of the secret key required to break it.
AES: Advanced Encryption Standard is the most widely used symmetric encryption algorithm that ensures secure data communication.
Blowfish: A symmetric encryption algorithm designed by Bruce Schneier, which uses 64-bit block sizes and key lengths of up to 448 bits.
CAST-128: A symmetric encryption algorithm that uses a 128-bit key and 64-bit blocks, developed by Carlisle Adams and Stafford Tavares.
DES: Data Encryption Standard is a symmetric encryption algorithm that has been widely adopted due to its simple design and easy implementation.
IDEA: International Data Encryption Algorithm that was designed by James Massey, Xuejia Lai and S.H. Low. This algorithm provides more security compared to DES and AES.
RC2: Rivest Cipher 2 is a symmetric key encryption algorithm that was developed by Ron Rivest.
RC4: Rivest Cipher 4 is a stream cipher that uses variable-length keys and small memory footprint.
Serpent: Serpent encryption algorithm was designed by Ross Anderson, Eli Biham, and Lars Knudsen. This algorithm has a 128-bit block size and key lengths of 128, 192 or 256 bits.
Triple DES: Triple Data Encryption Standard is a symmetric encryption standard that uses three 56-bit keys to encrypt data.
Twofish: A symmetric encryption algorithm that was designed by Bruce Schneier, and uses a key size of 128, 192 or 256 bits.
Camellia: A symmetric encryption algorithm that was developed by NTT and Mitsubishi Electric Corporation, which is a block cipher with 128-bit block size and key lengths of 128, 192 or 256 bits.
Kuznyechik: A lightweight symmetric encryption algorithm that was designed by the Russian Federal Security Service, it uses a 128-bit block and 256-bit key.
ARIA: ARIA encryption algorithm was developed by Korean researchers in the year 2003. This algorithm is used by South Korean government agencies and banks for secure data communication.
SEED: A symmetric encryption algorithm that uses a 128-bit block and a 128-bit key, and was developed by the Korea Information Security Agency.
Salsa20: A symmetric encryption algorithm that was designed by Daniel J. Bernstein, and is widely used for data encryption and authentication on internet communication services.
Chacha20: Another symmetric encryption algorithm designed by Daniel J. Bernstein, which uses a larger block size compared to Salsa20.
GOST: A symmetric key block cipher algorithm that was developed in Russia, and is widely used for encryption in Russian government organizations.
CRYPTO-1: A symmetric key stream cipher algorithm that is used by some RFID tags for communication.
Skipjack: A symmetric key block cipher algorithm that was developed by the US government, and was used in the Clipper chip to enable law enforcement access to encrypted communications.
RC5: Rivest Cipher 5 is a symmetric key algorithm that can have variable-length keys and blocks, and was designed by Ron Rivest for better performance compared to RC4.
SAFER: Secure And Fast Encryption Routine is a series of symmetric key algorithms, with each version offering increased security and speed over the previous one.
MISTY: Multiple Substitution-Permutation Network is a symmetric key block cipher algorithm that was developed by Mitsubishi Electric Corporation, and is widely used for encryption in Japanese government organizations.
"The keys, in practice, represent a shared secret between two or more parties that can be used to maintain a private information link."
"The keys may be identical, or there may be a simple transformation to go between the two keys."
"The requirement that both parties have access to the secret key is one of the main drawbacks of symmetric-key encryption, in comparison to public-key encryption."
"With exception of the one-time pad, they have a smaller key size, which means less storage space and faster transmission."
"Asymmetric-key encryption is often used to exchange the secret key for symmetric-key encryption."
"With exception of the one-time pad, they have a smaller key size, which means less storage space and faster transmission."
"The keys, in practice, represent a shared secret between two or more parties that can be used to maintain a private information link."
"The keys may be identical, or there may be a simple transformation to go between the two keys."
"Asymmetric-key encryption is often used to exchange the secret key for symmetric-key encryption."
"The requirement that both parties have access to the secret key is one of the main drawbacks of symmetric-key encryption, in comparison to public-key encryption."
"With exception of the one-time pad, they have a smaller key size, which means less storage space and faster transmission."
"Symmetric-key algorithms use the same cryptographic keys for encryption and decryption, while asymmetric-key algorithms use different keys."
"The keys, in practice, represent a shared secret between two or more parties that can be used to maintain a private information link."
"Asymmetric-key encryption is often used to exchange the secret key for symmetric-key encryption."
"With exception of the one-time pad, they have a smaller key size, which means less storage space and faster transmission."
"With exception of the one-time pad, they have a smaller key size, which means less storage space and faster transmission."
"The requirement that both parties have access to the secret key is one of the main drawbacks of symmetric-key encryption, in comparison to public-key encryption."
"The keys, in practice, represent a shared secret between two or more parties that can be used to maintain a private information link."
"The keys, in practice, represent a shared secret between two or more parties that can be used to maintain a private information link."