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——————————————————————————————— In this network security video tutorial we will study the working of RSA Algorithm.
RSA Algorithm theory –
1. Ron Rivest, Adi Shamir and Len Adlemen developed the method called as RSA algorithm.
2. Most popular and proven asymmetric key cryptography algorithm
3. Based on the mathematical fact that it is easy to find and multiply large prime numbers together, but it is extremely difficult to factor their product.
RSA Algorithm Steps –
1. Choose two large prime numbers P and Q.
2. Calculate N = P * Q
3. Select the public key (i.e. the encryption key) E such that it is not a factor of [(P – 1) * (Q – 1)].
4. Select the private key (i.e. the decryption key) D such that the following equation is true:
(D * E) mod (P – 1) * (Q – 1) = 1
5. For encryption calculate the cipher text CT from the plain text PT as follows: CT= PT^E mod N
6. Send CT as the cipher text to the receiver
7. For decryption calculate the plain text PT from the cipher text CT as follows: PT = CT^D mod N
Complete Network Security / Information Security Playlist – https://www.youtube.com/watch?v=IkfggBVUJxY&list=PLIY8eNdw5tW_7-QrsY_n9nC0Xfhs1tLEK
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