Cryptography Stack Exchange
Cryptography Stack Exchange

Questions tagged [voip]

Voice over Internet protocol (VOIP) is a technology that allows telephone calls to be made over computer networks like the Internet.

Voice over Internet protocol (VOIP) is a technology that allows telephone calls to be made over computer networks like the Internet. VoIP converts analog voice signals into digital data packets and supports real-time, two-way transmission of conversations using Internet Protocol (IP).

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AES-256-ECB to encrypt VOIP audio-stream?

I need to encrypt a live audio-stream that is being sent over the internet. The details are: The stream contains spoken language (VOIP) Only the raw stream is transmitted (no meta-data or container) Latency needs to be low. Therefore, the stream…
Lukas Knuth
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Information leakage in real-time voice encryption

I saw some time ago a post discussing the issues surrounding encryption of speech/voice in VoIP and how it can leak information (can't find it now). Can someone provide an insight into some of the issues and how to mitigate them if one wants to use…
Gustavo Litovsky
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What cipher mode is suitable for independantly decryptable short messages?

I'm building a small VoIP client which transmits encrypted audio data via UDP, and some packet loss is expected, so each packet will need to be decrypted separately even if others in the stream don't arrive. I also don't enforce strong ordering of…
Polynomial
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Telegram VoIP key exchange

We've been trying to understand how Telegram's VoIP end-to-end encryption works. Key Exchange Detailed description of the key exchange algorithm is documented on the Telegram website. Here is the crux of the algorithm, taken from the same…
Emil Melnikov
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End-To-End encryption for VoIP teleconference applications and many-to-many lag-sensitive applications

There are various protocols that allow you to have privacy-enhanced chat. Those can be either 2-party chat such as: OTR SIGNAL or multiparty chat such as: SIGNAL (n+1)sec mpOTR GOTR (2013 spec and 2008 ones) But nowadays many protocols,…
Dimitrios Desyllas
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Packet loss, AES and IV's

I'm extending a VoIP application that uses UDP to transport data. The idea is to use AES to encrypt each audio packet. For each call, a key will be randomly generated. The scenario inclues: Packet loss, no retransmission; Each packet will have…
Stefano
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