Example
To encrypt a message addressed to Alice in a hybrid cryptosystem, Bob does the following:
- Obtains Alice's public key.
- Generates a fresh symmetric key for the data encapsulation scheme.
- Encrypts the message under the data encapsulation scheme, using the symmetric key just generated.
- Encrypt the symmetric key under the key encapsulation scheme, using Alice's public key.
- Send both of these encryptions to Alice.
To decrypt this hybrid ciphertext, Alice does the following:
- uses her private key to decrypt the symmetric key contained in the key encapsulation segment.
- uses this symmetric key to decrypt the message contained in the data encapsulation segment.
Read more about this topic: Hybrid Cryptosystem
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“Our intellect is not the most subtle, the most powerful, the most appropriate, instrument for revealing the truth. It is life that, little by little, example by example, permits us to see that what is most important to our heart, or to our mind, is learned not by reasoning but through other agencies. Then it is that the intellect, observing their superiority, abdicates its control to them upon reasoned grounds and agrees to become their collaborator and lackey.”
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