H CS - Security precautions

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​Aims

• We are learning how encryption is used to securely transmit data over a network.

Achievements (theory)

• I can state the roles of public and private keys in asymmetric encryption.

• I can explain what a digital certificate is, and how its presence can be used to authenticate a website.

• I can describe the steps involved in the creation of a digital signature.

• I can explain why the use of a digital signature authenticates an electronic communication.

Open Ended

N5 revision - Describe the term encryption.

Reorder

Reorder the steps involved in sending an encrypted file.

• Encrypt file

• File is sent over e-mail

• File is decrypted

• File can be read by authorised recipient

1

2

3

4

• 1
• 2
• 3
• 4

Open Ended

Explain a disadvantage of using symmetric encryption.

Dropdown

A public key is used to

Select answer

data.

Reorder

Reorder the steps involved in sending an encrypted file using public and private keys.

• Encrypt file with public key

• File is sent to recipient

• File is decrypted with recipients private key

• File can be read by authorised recipient

1

2

3

4

• 1
• 2
• 3
• 4

​

​Aims

• We are learning how encryption is used to securely transmit data over a network.

Achievements (theory)

• I can state the roles of public and private keys in asymmetric encryption.

• I can explain what a digital certificate is, and how its presence can be used to authenticate a website.

• I can describe the steps involved in the creation of a digital signature.

• I can explain why the use of a digital signature authenticates an electronic communication.