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Accounting Information Systems

11th Edition
Ulric J. Gelinas + 3 others
ISBN: 9781337552127

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BuyFindarrow_forward

Accounting Information Systems

11th Edition
Ulric J. Gelinas + 3 others
ISBN: 9781337552127
Textbook Problem

Figure 9.9 (p. 346) depicts the transmission of an electronic message incorporating public key cryptography, encryption, and digital signatures. Answer the following questions related to that figure:

1. Can anyone read the message? Why?

2. Can Sally be sure the message is from Harry? Why?

3. Is the digital signature message (containing the hash total calculated by Harry) secret? Why?

4. Could anyone other than Harry send the digital signature message?

5. How does Sally know that the message has not been corrupted in transit?

6. Which question, or questions, above are related to authenticity?

7. Which question, or questions, above are related to integrity?

8. Which question, or questions, above are related to confidentiality?

FIGURE 9.9 Electronic Message Diagram to Accompany Short Problem 9-2

images

1)

Summary Introduction

To determine: Whether anyone can read the message.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

Explanation

Given diagram:

Here,

A refers the public key of Person H

B refers the private key of Person H

C refers the public key of Person S

D refers th...

2)

Summary Introduction

To determine: Whether Person S can be sure that the message is from Person H.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

3)

Summary Introduction

To determine: Whether digital signature message is secret.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

4)

Summary Introduction

To determine: Whether someone other than Person H can send the digital signature message.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

5)

Summary Introduction

To determine: How Person S know that the message has not been corrupted in transit.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

6)

Summary Introduction

To determine: The sub-part that is related to authenticity.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

7)

Summary Introduction

To determine: The sub-part that is related to integrity.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

8)

Summary Introduction

To determine: The sub-part that is related to confidentiality.

Introduction:

Accounting Information System (AIS) is said to be the specialized subsystem of the Information System (IS). AIS can be used in the business events for the purpose of collecting, processing, and reporting the financial information.

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