Summary
In this chapter, we saw how asymmetric encryption solved the problem of securely sharing a secret key in a data transaction. We compared two methods to achieve this, by using encryption or Diffie-Hellman, a key agreement protocol. We also saw how standards such as the PKCS assure vendor interoperability.
By now, you understand some of the requirements needed to create a strong algorithm, along with the importance of effectively managing both public and private keys. We saw the many uses for asymmetric encryption, which include key exchange, securing our email, generating a blockchain, and creating digital signatures.
We then compared a few asymmetric algorithms, such as RSA, PGP, and ECC. We also recognized that there are two main methods to provide trust when using a public key. The two ways to assure trust are the CA in a large environment such as the internet, or the Web of Trust in a smaller environment, such as an office. Finally, we saw how public-key encryption...
