ENCRYPTION AND DIGITALY SECURE WAYS

We send email messages as encrypted to prevent others from stealing information sent by us.The logic is simple .

Encryption is the process of turning a readable plaintext human message into cyphertext ,so that if the encrypted message is intercepted, they can't understand it.

Suppose the message is

" Let's meet,Bob"

This can be encrypted for example by shifting each letter once to the right

" Mfu't nffu ,Cpe"

This is a simple example .but real life encryptions are too complex to decode by others. In olden times, royal spies used such complex methods to exchange secret information.

Today management professionals etc use digital signature in the same way Logic remains same ;  public key and private key will be there.Together they are called key pair. You use your private key, known only to you 

A digital signature is created by taking the message you want to sign and applying a mathematical formula with your private key. Anyone who knows your public key can mathematically verify that this signature was indeed created by the holder of the associated private key.,but they can't know the private key

Today digital currency or crypto currency ,like bitcoin are existing.That exits on the same logic of public an private keys. It's called blockchain technology

 Currently,In India as the government has took measures to curb black money it is difficult not impossible to convert black money to bitcoins and other crypto currencies.Networks of criminal gangs are reportedly increasingly relying on cryptocurrency for money laundering and drugs smuggling

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