database security

Cumulative Review of Cryptography Concepts

Complete the following exercises. Save the document with your last name and submit it to the Assignment Files tab.

1. Review the following packet capture. Describe what the information identified by the yellow arrow in the packet capture section represents. Describe what is generally transpiring in the communication.

A

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2. Review the following packet capture. Describe what the information identified by the yellow arrow in the packet capture section represents. Describe what is generally transpiring in the communication.

ANSWER:

3. The following graphic represents a small piece of a larger traffic capture. Based on the information, describe what this traffic generally represents. Some of the traffic includes the acronym RSA. What is RSA in detail, as related to the image?

A

ANSWER:

a

4. Review the following graphic and describe its significance to cryptography.

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5. Describe what is transpiring in the following graphic.

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6. Describe in detail what the following equation pertains to in cryptography. Include what is being solved and why.

D(PRa, Y)

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7. Describe the process occurring in the following example:

-----BEGIN RSA PRIVATE KEY-----

MIIBOgIBAAJBAKkbSUT9/Q2uBfGRau6/XJyZhcF5abo7b37I5hr3EmwGykdzyk8G

SyJK3TOrssl0sdJsGbFmgQaRyV+DLE7750ECAwEAAQJAESwLKa1dCAmW4uvwXuQh

xGk2kuoAWX/1l3tRGoXiYgO4O0/BjHNNwiASF1q6q6nQ89SPKwA1/gpw5lOhMDhA

AQIhANWKs6T6e/FO7MTth4j5KTaPAoq8Xqp/0zGtzJzFD0sBAiEAyrrT4osEDa6t

NrlbdGHmIohnLGu550nVhXg4+8ql3EECIFXcSjUonhM9p8fatedmP6L3R49fBDVL

5jAQcLgMKAUBAiApOnV8zOi2H5/sURfYQ1CaFUNmNUJJVyqlSh3MlxnEAQIhAILN

/Oqz6uYzMmgEtP74B+vuI7yRB35TT1VQbgel6pLC

-----END RSA PRIVATE KEY-----

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8. Describe the significance of the area in the packet capture noted by the yellow arrow. What is occurring? What type of system does this communication originate from? Also, why would this system increase the security posture of an organization?

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9. This question consists of completing multiple activities.

Activity #1

Complete the steps below:

Step 1: Create a file called secrets.txt and place text of your choice in it (it is better to place a large amount of text in it).

Step 2: Copy it to your hard disk and take note of its location.

Step 3: Take an image file in .jpg format, placing it in the same directory as the text file just created, renaming it cool.jpg.

Step 4: Take note that this is merely an example and you must provide the proper paths and spacing.

copy /b cool.jpg + secrets.txt output.jpg

Activity #2

Answer the following questions:

· What is this operation an example of?

· What could have been used to detect this activity?

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10. Describe the differences between the following terms:

· Stream versus block ciphers

· Asymmetric versus symmetric encryption

· AES versus DES versus 3DES

· IKE versus ISAKMP

· HTTP versus HTTPS

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