Why encrypt messages?

Depending on the type of their activity, almost everyone comes across encryption. It’s no secret that in today’s world, a great mass of information falls into the hands of 3rd persons to whom this information should not be available.

Example.
You are conducting business correspondence and agree upon some important payment, which shall be transferred to your account. When you send your account details to your business partner, someone else is reading your e-mail. Due to a simple substitution of the account number the expected money shall not be accrued to your account! The money shall be sent to the hacker’s account indicated in your letter.

Let’s make a conclusion.
If you had encrypted the information, no one would have been able to read the message (e-mail) but the final beneficiary. This can be easily checked, since your partner with the second key will be able to read the message and transfer money to your account.

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