Data Integrity in Network Security

Do you know what data integrity in network security is? Data integrity refers to no corruption. The definition of data integrity is here: Wikipedia

Data Integrity in Network Security
Data Integrity in Network Security

What is Integrity

Integrity deals with preventing, or at least detecting, unauthorized “writing” (i.e., changes to data). Alice’s Bank must protect the integrity of account information to prevent Trudy from, say, increasing the balance in her account or changing the balance in Bob’s account. Note that confidentiality and integrity are not the same things. For example, even if Trudy cannot read the data, she might be able to modify this unreadable data, which, if undetected, would destroy its integrity. In this case, Trudy might not know what changes she had made to the data (since she can’t read it), but she might not care—sometimes, just causing trouble is good enough.

Data Integrity in Network Security

Whereas confidentiality deals with preventing unauthorized reading, integrity is concerned with detecting unauthorized writing. For example, suppose that you electronically transfer funds from one one account to another. You may not want others to know about this transaction, in which case encryption will effectively provide the desired confidentiality. But, whether you are concerned about confidentiality or not, you certainly want the transaction to be accurately received. This is where integrity comes into the picture.

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