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What is the opposite of security?
For the verb "secure"- the opposite of secure (to fasten) is to release or detach- the opposite of secure (to obtain) is to lose or forfeitFor the adjective "secure" (safe, protected), the opposite in insecure, non-secure, unsafe, unprotected, or threatened.
What is the opposite of jealous?
The opposite could be trusting, or secure, or unconcerned, unworried.
What is the best way of referring to the output of a secure hash function?
The output from a hash function is referred to as the hash value, hash code, hash sum, checksum or just plain "hash" as in "the hash of the file is...". Generally a hash function is presumed to be secure or it wouldn't be used. If a hash is not secure it could be referred to as "worthless" or "false sense of security".
How do people use encryption in everyday life?
The most common application for encryption is in Internet browsing; whenever someone enters a "secure" website (indicated by shttp as the page protocol type) an encryption system is used to secure traffic between the user and the site.
What is the most insecure hash for storing passwords?
Of the conman ones in use today MD5 is the least secure.
What is a vigenre cipher?
A Vigenère cipher is a method of encrypting alphabetic text by using a simple form of polyalphabetic substitution. It employs a keyword, where each letter of the keyword corresponds to a shift in the alphabet for the letters of the plaintext. The encryption process involves aligning the keyword with the plaintext and shifting each letter of the plaintext by the position of the corresponding letter in the keyword. This makes the Vigenère cipher more secure than a basic Caesar cipher, as it uses multiple shifts, complicating frequency analysis.
Is standard email transfer secure Why not How would you make it secure?
No, email is transmitted in plaintext. A secure solution would involve encrypting your email or using a more secure protocol (secure ftp, ssh, https, etc)
What is the difference between an unconditionally secure cipher and a computationally secure cipher?
unconditional security no matter how much computer power or time is available, the cipher cannot be broken since the ciphertext provides insufficient information to uniquely determine the corresponding plaintext computational security given limited computing resources (eg time needed for calculations is greater than age of universe), the cipher cannot be broken
What is a secure encryption?
Encryption is a process of translating a message from the Plaintext, into an encoded message, called the Ciphertext. This is usually accomplished using a secret Encryption Key and a cryptographic Cipher. ss of translating a message, called the Plaintext, into an encoded message, called the Ciphertext. This is usually accomplished using a secret Encryption Key and a cryptographic Cipher.
What is the difference between monoalphabetic cipher and polyalphabetic cipher with pdf?
A monoalphabetic cipher substitutes each letter of the plaintext with a fixed letter from the alphabet, meaning the same letter is always replaced by the same letter in the ciphertext. In contrast, a polyalphabetic cipher uses multiple substitution alphabets, allowing the same letter in the plaintext to be encrypted as different letters in the ciphertext based on its position or a key. This makes polyalphabetic ciphers generally more secure against frequency analysis than monoalphabetic ciphers. For a more in-depth explanation, you may refer to a PDF document on cryptography fundamentals.
What is the rc4 used for?
RC4 is a stream cipher widely used for encrypting data in various applications, particularly in network protocols like SSL/TLS and WEP for wireless security. It operates by generating a pseudorandom stream of bits that is combined with plaintext to produce ciphertext. Despite its historical popularity, RC4 is now considered insecure due to several vulnerabilities, leading to its declining use in favor of more secure encryption algorithms.
Caesar cipher when?
The Caesar cipher is a substitution cipher that dates back to ancient Rome, named after Julius Caesar, who reportedly used it to communicate with his generals. It works by shifting each letter in the plaintext by a fixed number of places down the alphabet. For example, with a shift of three, A becomes D, B becomes E, and so on. Although it's easy to implement, the Caesar cipher is not secure by modern standards and can be easily broken with frequency analysis or brute force.
What is text written in cipher or code called?
Text written in cipher or code is called "ciphertext." This type of text is transformed from its original form, known as "plaintext," using a specific algorithm or key, making it unreadable without the appropriate decryption method. Ciphertext is commonly used in cryptography to secure sensitive information from unauthorized access.
Could the ciphertext JOHN A1 be a valid ciphertext for the plaintext JOSE C1?
Of course it COULD be. Even a simple substitution cipher could be used to generate the given ciphertext from the given plaintext since they both have the same number of characters. Whether or not it actually IS a valid ciphertext depends on the algorithm used to encrypt it.
What is a method of encrypting TCP and IP transmissions?
SSL or Secure Sockets Layer
Which symmetric cipher is considered the most secure?
OTP
How is encryption commonly used?
Data encryption the process of scrambling stored or transmitted information so that it is unintelligible until it is unscrambled by the intended recipient. Historically, data encryption has been used primarily to protect diplomatic and military secrets from foreign governments. It is also now used increasingly by the financial industry to protect money transfers, by merchants to protect credit-card information in electronic commerce, and by corporations to secure sensitive communications of proprietary information. All modern cryptography is based on the use of algorithms to scramble (encrypt) the original message, called plaintext, into unintelligible babble, called ciphertext. The operation of the algorithm requires the use of a key. Until 1976 the algorithms were symmetric, that is, the key used to encrypt the plaintext was the same as the key used to decrypt the ciphertext.
