While discussing archive authenticity/integrity for long term and the problem of potentially re-keying in case of compromise, someone came up with the term "trans-cipher" (or "trans-ciphering").

I have tried to search the entire internet for this, but could not come up with a meaning for this. Can someone enlighten me?

Note: in the context of long term archive authenticity, the term came up while talking signature verification and the problem when a private key is compromised or when the algorithm for the public/private key gets obsolete (e.g. due to hardware raw power reaching a point where what was in the past difficult to factor becomes trivial).

PS: it is possible that the exact term is slightly different than "trans-cipher". On this project digital footprint is being used for digital fingerprint (aka crypto-hash function)...

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    I've never heard that term before. Sounds like a term that someone just made up, possibly to mean "bridging across different algorithms or different keys". Given that they are also using "digital footprint" to mean "digital fingerprint", and the fact that "signatures", "ciphers" and "fingerprints" are all different concepts, I'm not sure I trust this person as an authoritative source of jargon. – Mike Ounsworth Sep 14 '18 at 14:24
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    Clearly, it's the opposite of a cis-cipher. – Adonalsium Sep 14 '18 at 14:43
  • I would agree with you but check this doc page 2 (last paragraph) eprint.iacr.org/2017/246.pdf they do mention trans-ciphering but I also didn’t know about homomorphic encryption so I’m not understanding there explanation. Does it make sense to you? – Huygens Sep 14 '18 at 15:08

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