Question

Which of the following is NOT true of hashes?

	a.	You cannot reverse engineer a hash to derive the input data
	b.	It uses a fixed size string, so even if a hard drive is hashed, the hash will be the same number of bits as just a hashed text file.
	c.	Its primary security service is confidentiality
	d.	You cannot decrypt a hash

Answer 1

ANSWER - (c) Primary security service is confidentiality

Hash is one of the property that can converts one value to another also it can generate address in table.

• Decryption in a hash is not possible because hash is a one way function.
• It is practically impossible reverse engineer a hash to derive the input data
• In Hashes even hard drive is hashed, the hash will be the same number of bits.

So, all these above statements are true.

Hash primary security service is integrity not confidentiality.

So, the correct option is (c).

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