Kerckhoff's Principle says that it should be assumed of a cryptosystem that an attacker knows.. the key and the encryption / decryption algorithms the key but not the encryption / decryption algorithms not the key but the encryption / decryption algorithms not the key and not the encryption / decryption algorithms
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Kerckhoff's principle states that " A cryptosystem should be secure even if everything about the system, except the key is public knowledge."
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- Can you explain more about this question 1. How many passes should you do if the keys were all different? Answer here: Minimum 200 words where you discuss the specific implications (i.e., I don’t want a hunch or opinion, base it on facts…maybe use math). I’m understanding that any modern cipher should be secure with one pass. We should have only one pass because any modern cipher should be secure with one pass. The ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it. This process prevents the loss of sensitive information via hacking.so, we do have only one pass.For each of the following cryptographic algorithms, describe what they do your own words and state where they are commonly used in application security. Identify them as either hashing, key exchange, symmetric encryption, or asymmetric encryption. AES RSA Triple DES MD5 SHA256 PKI RC4 Diffie-HellmanUsing asymmetric encryption methods, such as those found in public-key cryptography, is a prudent move that should be taken. The use of public keys within the realm of cryptography is proof of this fact.
- Part 1: Please answer the following questions about the fundamental of cryptography. Each question has only one correct answer. 1, Which description about block ciphers is NOT correct? Block ciphers encrypt the message block by block. A block cipher with a small block is vulnerable to the codebook attack. The encryption and decryption algorithms in block ciphers use the same secret key. The key length for block cipher should be very short to defend against the exhaustive key search attacks. 2, If the key length of a block cipher is 64 bits, what is the size of the key space? Hint: The key space consists of all possible keys. 64 264 232 2128 3, Modern block ciphers combine substitution S and permutation P operations to improve security. Based on the security rule, the cipher should not use consecutive substitutions or consecutive permutations. In the following combinations, which one violates the above security rule? ?1?1?2?2 B. ?1?1?2?2 C. ?1?1?2?2 4, Which…Give the properties of “trustworthy”encryption system.In order to protect communications between itself and its abroad peers, a government agency decides to adopt encryption. During a discussion with its equivalents, it was decided to build a proprietary cryptographic algorithm in order to: Are there any reasons why this decision was made. What dangers are involved?
- What aspects of the RSA cryptographic algorithm give it an advantage over other symmetrical encryption systems, and how did these aspects come about?Using two instances, explain the rationale for and fundamental concepts of cryptography.Decrypt Encryption and decryption are mathematical inverses using the Caesar/Rail Fence Cipher Hint: This a split key - one part of the key is used for the Caesar and the other part of the key is used for the Rail Fence. The full key (Caesar and Rail Fence], in hexidecimal, is: 0x7F.
- A government department decides it needs to use encryption to protect communication between itself and its international counterparts. At a meeting with its counterparts, it is decided to develop a proprietary cryptographic algorithm for this purpose. Is this decision justifiable? What risks are being taken?To overcome two important concerns, public key cryptography was invented. The first was key delivery. Using an example, briefly describe the process of distributing keys.How did the RSA cryptographic algorithm develop its advantages over previous symmetrical encryption systems?