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A symmetric cipher is an algorithm that uses the same secret (private key) for both encryption and decryption. An asymmetric cipher is an algorithm that uses two different secrets, a public key for encryption, and a private key for decryption.
In English, basically the job of cryptography algorithms are to make text or files jumbled so it can't be read except by the desired recipients. Different algorithms use different techniques for doing this such as switching the order of letters or substituting them with a different letter, and the secret provides the exact instructions on how to do that.
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A cipher is called symmetric if it takes just as much computing time to encrypt a plaintext as it does to decrypt a ciphertext?
A symmetric cipher means that the key is the same for scrambling and unscrambling the data. Symmetric = same
Which symmetric cipher is considered the most secure?
OTP
What symmetric algorithm encrypts data one bit at a time?
Example of a stream cipher
What are the characteristics of the advance symmetric block cipher?
Some characteristics of an Advanced Symmetric Block Cipher are key dependent S-boxes, data dependent rotation, variable plaintext or ciphertext block length, and operations on both plain and ciphered data.
How are classical encryption techniques like modern symmetric-key cipher?
In symmetric key techniques there is a single key and that key is kept secret. Symmetric key is a like a sub part of classical encryption.
Why is it important to study feistel cipher?
Is the structure used by many signifi-cant symmetric block ciphers currently in use.
What is the diffie-hellman cipher?
Diffie-Hellman is not as much a cipher as a means of securing exchanging keys. You would use it to securely notify someone else of a symmetric shared key that you both would use for encrypting data. Think of it as more a key exchange method utilizing public and private keys than an actual cipher methodology.
How many keys are required for ten people to communication via a cipher?
n(n-1)/2 is the answer. Hence; 10(10-1)/2= 45 shared pairs. but this applies to symmetric only.
What is The essential ingredients of asymmetric cipher?
Symmetric ciphers use only one key. By contrast, an asymmetric cipher will use two keys. One key is kept "private" by the the owner while the other is "published" or otherwise released to the public (hence known as the "public key"). Data encrypted by one key can only be decrypted using the other key.
How are the graphs of inverse functions symmetric?
symmetric about the y-axis symmetric about the x-axis symmetric about the line y=x symmetric about the line y+x=0
How BAUDOT code made?
The BAUDOT code is made from a cipher. The cipher that does this is also known as a Bacon cipher.
How to you read pigpen cipher?
how to read pigpen cipher
