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Last active May 14, 2016 21:19
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Learning about secure messaging.md

#Encrypted Communication things to learn about?

##ECC

  • What's the difference between X25519 and ed25519?

  • What are prekeys?

  • What is the difference between a deniable and irrepudiable shared secret?

Symmetric crypto

  • What is IND-CCA and how does it relate to Moxie's principal of cryptgraphic doom?

  • What is an AEAD?

  • What is the difference between a block and stream cipher?

  • What AES modes should one use? Why?

Forward secrecy

  • What is the forward secrecy threat model?

  • Why does the Signal protocol sign the prekeys? What attack does this prevent?

Metadata

  • What techniques are available to hide metadata? What are their downsides?
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