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The Complex email System | Online Assignment Help

Describe the complex email system in the next to last slide from week 7. Describe the benefits of this system.

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Please find the enclosed document and I need in APA format with citations (referential).

Cryptography

Lesson 10

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CISSP-ISSEP® Bootcamp Seminar v10

Technical Management

Public Key Infrastructure

Chapter 7

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2

Key Management

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3

2

Usage Control

5

6

7

Storage

Recovery

Escrow

8

Zeroization

1

3

Creation

Change and Expiry

4

Distribution

Creation

Automated key generation

Truly random

Suitable length

Key encrypting keys

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4

Key Usage Control

Management has a vested interest in what activities or content may be hidden in cryptographically protected communications or files

They may create a policy that allows management to audit or decrypt encrypted data at their discretion

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5

Key Change and Expiry

In any environment, plans should be made to update keys periodically

Generating symmetric keys is easy, but delivering them is expensive since you will be delivering [N*(N-1)]/2 keys to N users

Expiry

Expiry ensures that a key is never overused

Expiry based upon:

Amount of traffic

Amount of traffic over time

Time-in-use

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6

Distribution

Out of band

Public key encryption

Secret key construction

Secret key delivery

Key Distribution Centers (KDC)

Certificates

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7

Storage

Trusted hardware

Smartcards

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8

Recovery

Split knowledge

Multi-party key recovery (MPR)

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9

Escrow

A process, mechanism, or entity that can recover a lost or destroyed cryptographic key

Key escrow systems are typically made up of three components:

A user component that handles the generation and use of cryptographic keys

An escrow component that saves the keys

A recovery component that provides the restoration services

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10

Law Enforcement Issues

Commonly available commercial and open source encryption can hinder law enforcement in executing investigations

Many countries have laws concerning the import, export, and use of encryption (Wassenaar Arrangement)

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11

Key Zeroization

Erasure of keys to prevent disclosure — especially when equipment is to be discarded or if stolen

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12

Public Key Infrastructure (PKI)

Public Key Infrastructure binds a people/entities to their public keys

Public keys are published and certified by digital signatures

Cross-Certification (Xcert)

Certificate Revocation Lists (CRLs)

X.509 standard

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13

Certification

Trust and Trust Models

Certification establishes trustworthiness of public keys

Certification Authority (CA)

Certificate Policy (CP)

Certificate Practice Statement (CPS)

Registration Authority (RA)

Validate Certification Path

14

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Applications and Encryption Issues

Third-party CAs:

Allow business partners to trust (to some level) your public key certificates

Have a mutual trust in the CA (e.g., VeriSign)

If we choose to run our own CA, will anyone trust us?

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15

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