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Public Key Encryption vs Private Key Encryption | difference between Public Key Encryption and Private Key Encryption

This page compares Public Key Encryption vs Private Key Encryption and mentions difference between Public Key Encryption and Private Key Encryption.

There are two basic types of encryptions viz. symmetric key and asymmetric key. The symmetric key encryption uses same key at sender and receipient. The asymmetric key encryption uses different keys at sender and receipient machines.

public key encryption vs private key encryption

• The figure-1 depicts simple encryption and decryption system.
• As shown transmit side converts plain text into encrypted text before transmission over the medium. The transmit side uses public key shared by receipient.
• As shown receive side converts encrypted text back to the plain text form. The receive side uses private key as generated by receipient itself.

As this is asymmetric encryption type, public key transported over the medium can not be used to decrypt the encrypted message nor it can be used to derive private key.

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