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Abstract—This paper stipulates the exact process of technical WhatsApp’s end-to-end encryption system. WhatsApp android application is allowing people to Messenger allows people to exchange chats, group chats, images, videos, voice messages and files with limited bandwidth and computational power. All the communication in WhatsApp follows end to end encryption. Encryption is nothing but scrambling of the messages so that third party or hackers cannot get access for the same. The entire encryption process of WhatsApp revolves around three protocols namely AES 256, SHA 256 and ECDH protocol.
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