Company A submitted a bid on a contract to do work for Company B via email. Company B was insistent that the bid did not come from Company A. Which of the following would have assured that the bid was

The correct answer is D. Digital Signatures. Digital signatures provide non-repudiation, meaning the sender cannot deny having sent a message. A digital signature is created using the sender's private key, which only they possess. Company B could verify the signature using Company A's public key, cryptographically proving t

General security concepts

Question

Company A submitted a bid on a contract to do work for Company B via email. Company B was insistent that the bid did not come from Company A. Which of the following would have assured that the bid was submitted by Company A?

Options

ASteganography
BHashing
CEncryption
DDigital Signatures

How the community answered

(46 responses)

A
4% (2)
B
2% (1)
D
93% (43)

Explanation

Digital signatures provide non-repudiation, meaning the sender cannot deny having sent a message. A digital signature is created using the sender's private key, which only they possess. Company B could verify the signature using Company A's public key, cryptographically proving the message originated from Company A. Steganography hides data within other data but proves nothing about the sender. Hashing verifies data integrity but not identity. Encryption protects confidentiality but does not prove who sent the message.

Topics

#digital signatures#non-repudiation#PKI#email security

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