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- Welcome to lesson four:

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Fundamentals of Cryptography and PKI.

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This lesson starts with an
overview of the basic components

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of cryptography and introducing
public key infrastructure.

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You will then learn

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about different encryption
and hashing algorithms

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and which ones to avoid because
of security vulnerabilities.

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We will go over secure socket layer,

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transport layer security

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and how digital certificates

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are used in today's modern environments.