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Express Learning: Cryptography and Network Security by ITL Education Solutions Limited

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6

Asymmetric-key Algorithms

1. What are the requirements of asymmetric-key cryptography?            Or            What are the characteristics that an asymmetric-key cryptographic algorithm must possess?

Ans.: Asymmetric-key cryptography requires the use of two different keys: the public key for encryption and private key for decryption. The public key is known to everyone, whereas the private key is known to its owner only. Diffie and Hellman laid out some requirements that must be fulfilled by the algorithms used for asymmetric-key cryptography. These requirements are listed below:

images   It should be easy for the receiver to generate the pair ...

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