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The answer depends on how you would layer the encryption on top of the existing protocol. If you implemented your own Skype client, you could deal with compression issues yourself. That might allow you to use format preserving encryption, perhaps on the compressed data stream and not the audio itself. However, you would need to be careful – speech ...


A one time pad (OTP) should by definition not have any patterns. An entropy source can have patterns, but an OTP by definition should consist of pure random bits. In general you can create something that is close to a true random number generator by applying a cryptographic hash function over the output of an entropy source. According to NIST you should ...

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