0
Why do some block cipher modes of operation only use encryption while others use both encryption and decryption?
Some block cipher modes of operation only use encryption because the input is set to
some initialization vector and the leftmost bits of the output of the encryption function
are XORed with the first segment of plain text p1 to produce the first unit of cipher text
C1 and it is transmitted. While in decryption, the cipher text is XORed with the output of
the encryption function to produce the plain text.
What else can I help you with?
What is the system of secret writing?
A system of secret writing, often referred to as a cipher or code, is a method used to encode messages so that they can only be understood by someone who knows the key or method of decryption. These systems can include techniques like substitution, where letters or words are replaced with others, and transposition, where the order of letters or words is rearranged. Historically, secret writing has been employed for espionage, secure communications, and to protect sensitive information. Examples include the Caesar cipher and the use of modern encryption algorithms in digital communications.
Identify the primary cryptographical techniques employed when producing cipher text?
The primary cryptographical techniques used to produce ciphertext include substitution, where characters or bits are replaced with others based on a key, and transposition, which rearranges the order of characters without altering them. Additional techniques include symmetric key encryption, where the same key is used for both encryption and decryption, and asymmetric key encryption, which uses a pair of keys (public and private). Hash functions may also be used for integrity verification, though they do not produce reversible ciphertext. Together, these techniques enhance data security and confidentiality.
How can data encryption can be used to transfer data securely?
Important files can be encrypted with the use of a program (many of which are free) then sent to others (as an e-mail attachement, or a stored file on a web storage site like 4Shared or OpenDrive. The decryption key can either be sent separately (which is not the safest, but is better than no encryption at all), or the recipiant can be made aware of the decryption key beforehand (preferably by personal conversation, so there is no digital record,) which is generally much safer.
What is Another word for code and is a way to transform text in order to conceal meaning?
There are only a couple different synonyms for the word code. These synonyms include cipher, key, hieroglyphics, and the word cryptogram.
What is transportation cipher?
A transportation cipher, often referred to as a transposition cipher, is a method of encryption where the positions of the characters in the plaintext are rearranged according to a specific system or key, rather than substituting characters with others. This results in a scrambled output that retains the original characters but alters their order, making it challenging to decipher without the key. Common techniques include columnar transposition and rail fence ciphers. The security of this method relies on the complexity of the reordering process.
What do you do to get the key word to a vigenere cipher when you want to solve the cipher?
It depends on the cipher used. Some can be attacked and broken in minutes; others are unbreakable in practise; and some can never be broken.
What is open SSL?
Open SSL is a Linux based application made to create SSL certificates on your server. Once you have create an SSL, you may either use it as a Self-Signed SSL meaning that the SSL has been assigned by your server or you may purchase an SSL certificate from a known and trusted SSL provider such as verisign to avoid Alert messages such as SSL is not trusted from your browser.
What do you need encryption for?
Encryption of data is like locking up your house. Nobody can access the data, unless they have the "key", or decryption code. It is used for transporting sensitive data, in organizations like the military, so that hackers cannot access the data. Of course, there are ways of "Brute Forcing" the data to decrypt it, which is often used is someone, like a hacker, is trying to access the data. There are also different "levels" of encryption. Such as: 8-bit 16-bit 32-bit 64-bit 128-bit And so on.... The higher the level of encryption, the harder the data is to decrypt.
What are the advantages that come from the use of SSL encryption?
SSL encryption prevents others from hacking into transactions. This will protect data such as credit card and banking information from falling into the wrong hands.
What is cipher code?
There are several different meanings to the word cipher (cypher) * A secret or disguised way of writing, a code * The number zero, 0 * A person of no importance, an agent of others * A monogram - a design fromed from a person's initials * The continuous sounding of an organ pipe
What is understood by the term co-operation?
Co-operation is to act in accord with others.
How does data encryption help keep data secure?
When data is stored or sent, it can be sent as it is, when over a network this would be packets. But when data is encrypted, its simply like saying, if i sent you an email that says Hi, How are you H = 103343 i = 408300 , = 985742 The numbers are sent not the letters so the computer on the other end, Decrypts this data for your display.
