Answer :
The best approach for two parties who wish to establish a means for confirming the confidentiality and integrity of messages that they exchange is Encryption and Digital Signatures.
The Message secrecy or confidentiality:
- In the event that any digital attacker can't perceive or peruse the encoded message then the message is named as message confidentiality
- Utilizing encryption and decoding strategy to track down the secrecy.
Message Integrity:
- The message is changed by the beneficiary and the methodology is called message respectability.
- For this situation starting message isn't changed in the exchange point.
- With the utilization of adding strategies are to track down the message uprightness.
Once in a while programmers tracks down it conceivable to change message on account of message honesty. Then, at that point, the privacy status of message is harmed.
A digital signature is an electronic, encoded, stamp of validation on advanced data, for example, email messages, macros, or electronic records. A signature affirms that the data began from the underwriter and has not been modified.
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