Is it possible for steve to reveal contents of ryan message

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Assignment:

Ryan uses a 256-bit asymmetric encrypt algorithm in CBC mode. He has a plain text message called P1. Ryan encrypts P1 using his private key to produce ciphertext C1. For additional security, Ryan encrypts C1 with his public key to produce C2. Ryan then sends C2 to Kevin. Steve is eavesdropping on the communication between Ryan and Kevin. Is it possible for Steve to reveal the contents of Ryan's message? Why or why not?

Reference no: EM133268339

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