PGP Encryption/Decryption

[Former Member]

Hello,

We have purchase AEADAPTIVE and uses their PGP modules for sending the files to third party.

For an encryption scenario, the third party has given their public key to us.

Please clarify me my understanding.

I assume we use their public key to encrypt the file and send it to them.

The third party will use their private key to decrypt the data sent by us.

In this, do we need to send our public key to the third party ?

I am a bit confused.

Regards

Anandh

[baskar_gopalakrishnan2]

The usage of public key of recipient purely depends on who originates or starts the message.

In simple words during asymmetric cryptography, sender uses recipient public key to encrypt and send the message. The recipient on the other end uses his/her private key to decrypt the message. Hope this helps.  Similarly if the recipient wants to send the message to the sender, he uses recipient public key for encrypt. Though this is little bit confusing, you might want to read this link. BTW, if you see Shab's link you will not that we dont need to purchase this in the later versions.

http://searchsecurity.techtarget.com/definition/asymmetric-cryptography