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Ciphertext stealing #41

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makavity opened this issue Apr 5, 2023 · 2 comments
Closed

Ciphertext stealing #41

makavity opened this issue Apr 5, 2023 · 2 comments

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@makavity
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makavity commented Apr 5, 2023

Hello!
For belt-ecb I need ciphertext stealing. And what is the best way to implement it?
Just make encrypt method and do not process block by block, process always all blocks, or implement block-padding CiphertextStealing, which accept 3*BlockSize and pad only last block?
@newpavlov
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newpavlov commented Apr 5, 2023 •
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I think we need to implement a generic CTS crate, then you would define belt-ecb as Cts2<BeltBlock> and belt-cbc as Cts2<cbc::En(De)cryptor<BeltBlock>>. Since we currently do not have traits for ciphertext stealing, we should be fine with using inherent methods on the structs.

@newpavlov
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Going to close this issue in favor of #1

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@newpavlov @makavity