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1. Cipher text only attack on speech time scrambling systems using correction of audio spectrogram

H. Ghasemzadeh; M. Tajik Khasss; H. Mehrara

Volume 9, Issue 2 , Summer and Autumn 2017, , Pages 131-145

Abstract
  Recently permutation multimedia ciphers were broken in a chosen-plaintext scenario. That attack models a very resourceful adversary which may not always be the case. To show insecurity of these ciphers, we present a cipher-text only attack on speech permutation ciphers. We show inherent redundancies ...  Read More