what are weak cryptographic algorithms?
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A weak cipher is defined as an encryption/decryption algorithm that uses a key of insufficient length. ... The larger the key size the stronger the cipher. Weak ciphers are generally known as encryption/ decryption algorithms that use key sizes that are less than 128 bits (i.e., 16 bytes …
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Secure Hash Algorithm (SHA) is one of many available hashing algorithms used to verify data integrity. The other options are not hashing algorithms, but symmetric encryption algorithms.
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What are the two principal requirements for the secure use of symmetric encryption? (1) a strong encryption algorithm; (2) Sender and receiver must have obtained copies of the secret key in a secure fashion and must keep the key secure.
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There are two main families of encryption algorithms: symmetric and public key. A symmetric algorithm uses one key for both encryption and decryption. A public key algorithm uses two matching keys; when you encrypt with one of the keys, you use the other one to decrypt.
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Message digests are algorithmic numbers. Based on the network security protocols, among algorithms RSA, SHA-1, DES and MD5, the ones used to generate message digests are SHA-1 and MD5. The reason behind this is that DES and RSA are used solely for encryption purposes.
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In cryptography, MD5 (Message-Digest algorithm 5) is a widely used cryptographic hash function with a 128-bit hash value. As an Internet standard (RFC 1321), MD5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of files.
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  When combined, steganography and cryptography can provide two levels of security.   Computer programs exist which encrypt a message using cryptography, and hide the encryption within an image using steganography. Another form of steganography is in null ciphers, or unencrypted text messages.
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['algorithm. analog. app. application. array.', 'backup. bandwidth. binary. bit. bite. bitmap. ... ', 'cache. caps lock. captcha. CD. CD-ROM. client. ... ', 'dashboard. data. data mining. database. debug. ... ', 'email. emoticon. encrypt. encryption. enter. ... ', 'FAQ (frequently asked questions) file. finder. firewall. firmware. ... ', 'gigabyte. graphics.', 'hack. hacker. hardware. home page. host.']
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Linear cryptanalysis focuses on statistical analysis against one round of decrypted cipher text. Differential analysis focuses on statistical analysis of two inputs and two outputs of a cryptographic algorithm.
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Symmetric Encryption schemes like AES, DES use a key of defined bit size. The key is generated during the course of the algorithm by a mathematical function called as PRNGs(Pseudo Random Number Generators). ... The encryption keys generated in modern cryptographic algorithms are generated depending upon the algorithm used.
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['Automatic repeat request (ARQ)', 'Forward error correction.', 'Hybrid schemes.', 'Minimum distance coding.', 'Repetition codes.', 'Parity bit.', 'Checksum.', 'Cyclic redundancy check.']
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Python Cryptography Toolkit (pycrypto) This is a collection of both secure hash functions (such as SHA256 and RIPEMD160), and various encryption algorithms (AES, DES, RSA, ElGamal, etc.). The package is structured to make adding new modules easy.
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ECC is an approach — a set of algorithms for key generation, encryption and decryption — to doing asymmetric cryptography. Asymmetric cryptographic algorithms have the property that you do not use a single key — as in symmetric cryptographic algorithms such as AES — but a key pair.
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In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code.
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Least Privilege. Simplicity (of design) Minimization (of implementation) Fail Safe Defaults / Fail Secure.
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Prime Factorization (or integer factorization) is a commonly used mathematical problem often used to secure public-key encryption systems. A common practice is to use very large semi-primes (that is, the result of the multiplication of two prime numbers) as the number securing the encryption.
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['Bing. ... ', 'Yandex. ... ', 'CC Search. ... ', 'Swisscows. ... ', 'DuckDuckGo. ... ', 'StartPage. ... ', 'Search Encrypt. ... ', 'Gibiru.']