After taking some courses on cryptography, Alice and Bob decide to try it out in their communication. They agree that they will use Vigenere cipher for data encryption/decryption, and RSA for sharing secrete key, where the key of Vigenere cipher only uses letters A, B,..., Jand letters in a key are encoded as digits 0,1,...,9 for RSA. For instance, the key BAJ is 109.Alice chooses a RSA public key (n. e) = (341,7). Bob uses the Vigenere cipher to encrypt a sentence and encrypt the Vigenere key by Alice's RSA public key. Then Bob sends the following message to Alice:61. Tfsgnhgs zq tadnov zuws gutoiosgoz dfiqsk vik ffgfmopf. Ov jy uuxkdz.Answer the following questions:• What is the Nigenere key used by Bob?• What is the original message from Bob?
After taking some courses on cryptography, Alice and Bob decide to try it out in their communication. They agree that they will use Vigenere cipher for data encryption/decryption, and RSA for sharing secrete key, where the key of Vigenere cipher only uses letters A, B,..., J
and letters in a key are encoded as digits 0,1,...,9 for RSA. For instance, the key BAJ is 109.
Alice chooses a RSA public key (n. e) = (341,7). Bob uses the Vigenere cipher to encrypt a sentence and encrypt the Vigenere key by Alice's RSA public key. Then Bob sends the following message to Alice:
61. Tfsgnhgs zq tadnov zuws gutoiosgoz dfiqsk vik ffgfmopf. Ov jy uuxkdz.
Answer the following questions:
• What is the Nigenere key used by Bob?
• What is the original message from Bob?
Trending now
This is a popular solution!
Step by step
Solved in 6 steps with 6 images
