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Create a message • SHA-1 used to generate 160-bit hash code • Hash encrypted with RSA using sender's private key, the result is prepended to the message • The receiver uses RSA with senders public key • The receiver decrypts the hash with the senders public key. The receiver generates a new hash code from the received message and compares it with the decrypted hash to prove authenticity.

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1. Create a message • SHA-1 used to generate 160-bit hash code • Hash encrypted with RSA using sender's private key, the result is prepended to the message • The receiver uses RSA with senders public key • The receiver decrypts the hash with the senders public key. The receiver generates a new hash code from the received message and compares it with the decrypted hash to prove authenticity.





 
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