ACCT 3140 Chapter 5

 Transforms normal text into unreadable gibberish.

• Encryption

• Decryption

• Private-Key Encryption (Symmetric)

• Public-Key Encryption (Asymmetric)

Reverses the encryption process.

• Encryption

• Decryption

• Private-Key Encryption (Symmetric)

• Public-Key Encryption (Asymmetric)

Only one key and both parties must have the key

• Encryption

• Decryption

• Private-Key Encryption (Symmetric)

• Public-Key Encryption (Asymmetric)

Uses two keys: public and private

• Encryption

• Decryption

• Private-Key Encryption (Symmetric)

• Public-Key Encryption (Asymmetric)

Widely known, information encrypted with this key can only be decrypted by the private key.

• Public Key

• Private Key

• Master Key

Known only to its owner, information encrypted with this key can only be decrypted by the public key.

• Public Key

• Private Key

• Master Key

Raw facts

• Data

• Information

 Transferred and processed data (made useful)

• Data

• Information

Data Elements in order of smallest to largest. Each higher level is composed of the level that proceeds it.

• Bit, Byte, Field, Record, File, Database

• Byte, Bit, Record, Field, File, Database

• Bit, Byte, Record, Field, File, Database

• Bit, Byte, File, Record, Field, Database

• Database, File, Record, Field, Byte, Bit

The second smallest data element:

• Bit

• Byte

• Field

• Record

• File