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Understanding How Encryption Works

You probably hear the word encryption a lot, but do you really know what it means? When you shop online, the store touts that you need not worry because it encrypts your transaction. When you message or email somebody, the app states it encrypts your messages.

What Does That Actually Mean Though?

The term encryption refers to the encoding of any Internet message in such a way that only the intended addressee can decode it. Internet message literally means any data sent via the Internet, not just a text or email.

Encryption software transforms the data sent into cipher text. If an individual did manage to steal the data sent, they could not read it unless they had the decryption key.

Military-Grade Encryption

If you send something using a method that says it uses military-grade encryption, you will have sent it in a manner that proves nearly impossible to crack. Military-grade encryption uses 256-bit keys to create 2^256 possible combinations. No human can encrypt something using military grade encryption. Not even a supercomputer can crack an encrypted key in a reasonable time period.

Symmetric Encryption

Symmetric encryption is when a sender and a receiver use the same private encryption key to decode and encode an encrypted message. The main drawback is that the key should be shared between the parties. Unless a secure tunnel is established, an interceptor might snatch the key and decipher the message.

Asymmetric Encryption

Asymmetric encryption uses a two key method to for greater safety. A public key and a private key protect the message. Both sender and receiver use the shared public key, while each gets their own private key. You need both to access the message. It does leave the end-points unprotected.

Here Is an Example of How Asymmetric Encryption Works:

1) Message is encrypted using the Receiver Public Key

2) Receiver decrypts the message using his own Private Key

Asymmetric Encryption

Asymmetric Authentication:

The same two keys can perform authentication :

1) Sender signs his data with his own private key

2) Receiver can authenticate that the data came from Sender using his known public key.

3) No data is encrypted

Asymmetric Authentication

End-To-End Encryption

End-to-end encryption (E2EE) encrypts data throughout the transportation between the two end-points, including through intermediate servers. No third party, not even your Internet Service Provider (ISP) car read it. Backup or peer-to-peer (P2P) services sometimes call E2E encryption by another name – client-side encryption. Other times, it’s referred to as zero-knowledge encryption. An example of end-to-end encryption can be found on apps such as Facebook Messenger or Telegram, however, neither messaging service activates it automatically.

Learn more about how encryption protects you and how it can help you protect the public safety with RadioIP solutions. We can help you surf the Internet more safely and help first responders conduct business more privately and safely. Radio IP: we redefine secure mobility.

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