[openssl-users] different encrypted text for the same plain text message

Benjamin Kaduk bkaduk at akamai.com
Thu Jul 28 15:15:15 UTC 2016

There are several places where a per-connection random input is
introduced, with a specific goal of making encryptions of the same
plaintext produce different ciphertexts (as well as other benefits).  If
a plaintext always produced the same ciphertext, then an attacker could
make a dictionary of different observed ciphertexts and know when the
same plaintext was being repeated, which violates the confidentiality
property desired from the protocol.


On 07/28/2016 06:19 AM, R-D intern wrote:
> Hello,
> I am using ECDSA-ECDHE-AES-SHA cipher suite for client -server security.I
> tried understanding the mechanism handshake mechanism. What still quizzes me
> is ; communication between a specific client -server for a specific session
> generates different encrypted text for the same plain text message. What
> leads  to this? Can anybody elaborate?
> Please reply.
> Thanks and regards,
> Suman
> --
> View this message in context: http://openssl.6102.n7.nabble.com/different-encrypted-text-for-the-same-plain-text-message-tp67595.html
> Sent from the OpenSSL - User mailing list archive at Nabble.com.

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