Vigenère Cipher Case Study
Part A
( 1 ) The Vigenère cipher is a method of encrypting alphabetic text by using a key known as a running key, which is generated by a keyword. In a Caesar cipher, we have to shift every letter of the alphabet with other number of places The Vigenère cipher consists of many Caesar ciphers in sequence with different shift values. The Caesar cipher with digraph coding provides a means of increasing the key space from 26 to 676 , so the key can take any value between 0 and 675 .
( 2 ) This digraph cipher much harder to break than a single letter cipher. The key remains constant 25, but using a Caesar cipher with digraph coding we encrypt letters as pairs (digraphs) instead of singly that increases the key space so it can take any value …show more content…
They were students at MIT, Massachusetts Institute of Technology, when they decided to create the RSA cryptosystem together. This algorithm was created in 1977. In later years, the three students started the company “RSA Security LLC” in 1982. RSA Cryptosystem’s main aim was to encrypt, hide, private messages between the sender and recipient, so that only them could unlock and discover the message while it’s being sent through an unsecure channel. The process of encryption and decryption was and still is successful. Due to the fact that it utilizes complex mathematical techniques and formulas, that makes the system …show more content…
It was created by three MIT students in 1977. The technique itself was found by Clifford Cocks in 1973, this was a secret that was revealed in 1997. After creating it lots have tried to break it, but due to the mechanisms used and mathematical problems implemented in creating a RSA cryptosystem, they always end up accepting the fact that it can not be broken. The real threat that is faced when using the RSA algorithm, would be if both the random chosen numbers, as mentioned above p and q, were small numbers or even if they were related in some way, one is derived from the other, since there have been created algorithms recently that could retrieve and find the private key and break the encrypted message in a short time in such situations. However, when using a complex number that has many integers, it is almost impossible in the meantime to decrypt it without knowing the private key used to encrypt it along with the n. Yet, it is considered 100% and fully secured algorithm till this
( 1 ) The Vigenère cipher is a method of encrypting alphabetic text by using a key known as a running key, which is generated by a keyword. In a Caesar cipher, we have to shift every letter of the alphabet with other number of places The Vigenère cipher consists of many Caesar ciphers in sequence with different shift values. The Caesar cipher with digraph coding provides a means of increasing the key space from 26 to 676 , so the key can take any value between 0 and 675 .
( 2 ) This digraph cipher much harder to break than a single letter cipher. The key remains constant 25, but using a Caesar cipher with digraph coding we encrypt letters as pairs (digraphs) instead of singly that increases the key space so it can take any value …show more content…
They were students at MIT, Massachusetts Institute of Technology, when they decided to create the RSA cryptosystem together. This algorithm was created in 1977. In later years, the three students started the company “RSA Security LLC” in 1982. RSA Cryptosystem’s main aim was to encrypt, hide, private messages between the sender and recipient, so that only them could unlock and discover the message while it’s being sent through an unsecure channel. The process of encryption and decryption was and still is successful. Due to the fact that it utilizes complex mathematical techniques and formulas, that makes the system …show more content…
It was created by three MIT students in 1977. The technique itself was found by Clifford Cocks in 1973, this was a secret that was revealed in 1997. After creating it lots have tried to break it, but due to the mechanisms used and mathematical problems implemented in creating a RSA cryptosystem, they always end up accepting the fact that it can not be broken. The real threat that is faced when using the RSA algorithm, would be if both the random chosen numbers, as mentioned above p and q, were small numbers or even if they were related in some way, one is derived from the other, since there have been created algorithms recently that could retrieve and find the private key and break the encrypted message in a short time in such situations. However, when using a complex number that has many integers, it is almost impossible in the meantime to decrypt it without knowing the private key used to encrypt it along with the n. Yet, it is considered 100% and fully secured algorithm till this