4 ms·

>This assures non-reputability of messages. No, they're assuring reputability, not non-reputability.

by Thorrez 6y ago

nickcox 6y ago
Perhaps they were going for non-repudiation?
oconnor663 6y ago
I've never heard "reputability" used in crypto, but confusingly, it might be the opposite of "repudiability"?
kibibu 6y ago
I read it as saying you could deny writing any specific message as it could have been forged after the session ended. Non-reputability.
alias_neo 6y ago
I disagree, I believe, they're trying to say they provide "non-reputability" (the opposite to non-repudiation) so you can deny messages actually came from you because they could have been "forged". it's hard to tell though, the statements are a bit of a mess in general.
- Thorrez 6y ago
  Hmm, you're right that non-reputability likely means something different than non-repudiation. The problem is I can't find anyone actually using non-reputability in that other meaning. What I do find is various places using non-reputability erroneously as a synonym for non-repudiation.[1][2][3] So in fact I now think that EncroChat actually made 2 errors: said non-reputability instead of non-repudiation, and also misunderstood non-repudiation as meaning repudiation. [1] https://books.google.com/books?id=qk_hDwAAQBAJ&pg=PT682&lpg=PT682&dq=%22reputability%22+crypto&source=bl&ots=rNy0g5x6sN&sig=ACfU3U39G8jU9-0zFxLIkP-nZoy5ysI6fA&hl=en&sa=X&ved=2ahUKEwiP35T8vK_qAhVFip4KHWI1BZcQ6AEwDnoECAgQAQ#v=onepage&q=%22reputability%22%20crypto&f=false https://books.google.com/books?id=qk_hDwAAQBAJ&pg=PT682&lpg=... [2] https://books.google.com/books?id=_d7RUNF-2tcC&pg=PR21&lpg=PR21&dq=%22reputability%22+crypto&source=bl&ots=eAOarG8b3D&sig=ACfU3U1vOALyOL63rwHll5jzZhdnu5kGUw&hl=en&sa=X&ved=2ahUKEwiP35T8vK_qAhVFip4KHWI1BZcQ6AEwDHoECA0QAQ#v=onepage&q=%22reputability%22%20crypto&f=false https://books.google.com/books?id=_d7RUNF-2tcC&pg=PR21&lpg=P... [3] https://books.google.com/books?id=PHBTDwAAQBAJ&pg=PA61&lpg=PA61&dq=%22reputability%22+crypto&source=bl&ots=_5ow00ZlU9&sig=ACfU3U1otQu_phi4LZwzBq-sHu8vFTZDKQ&hl=en&sa=X&ved=2ahUKEwiP35T8vK_qAhVFip4KHWI1BZcQ6AEwC3oECAsQAQ#v=onepage&q=%22reputability%22%20crypto&f=false https://books.google.com/books?id=PHBTDwAAQBAJ&pg=PA61&lpg=P...
deleted 6y ago
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>This assures non-reputability of messages. No, they're assuring reputability, not non-reputability.

nickcox 6y ago

Perhaps they were going for non-repudiation?

oconnor663 6y ago

I've never heard "reputability" used in crypto, but confusingly, it might be the opposite of "repudiability"?

kibibu 6y ago

I read it as saying you could deny writing any specific message as it could have been forged after the session ended. Non-reputability.

alias_neo 6y ago

I disagree, I believe, they're trying to say they provide "non-reputability" (the opposite to non-repudiation) so you can deny messages actually came from you because they could have been "forged". it's hard to tell though, the statements are a bit of a mess in general.

Thorrez 6y ago
Hmm, you're right that non-reputability likely means something different than non-repudiation. The problem is I can't find anyone actually using non-reputability in that other meaning. What I do find is various places using non-reputability erroneously as a synonym for non-repudiation.[1][2][3] So in fact I now think that EncroChat actually made 2 errors: said non-reputability instead of non-repudiation, and also misunderstood non-repudiation as meaning repudiation. [1] https://books.google.com/books?id=qk_hDwAAQBAJ&pg=PT682&lpg=PT682&dq=%22reputability%22+crypto&source=bl&ots=rNy0g5x6sN&sig=ACfU3U39G8jU9-0zFxLIkP-nZoy5ysI6fA&hl=en&sa=X&ved=2ahUKEwiP35T8vK_qAhVFip4KHWI1BZcQ6AEwDnoECAgQAQ#v=onepage&q=%22reputability%22%20crypto&f=false https://books.google.com/books?id=qk_hDwAAQBAJ&pg=PT682&lpg=... [2] https://books.google.com/books?id=_d7RUNF-2tcC&pg=PR21&lpg=PR21&dq=%22reputability%22+crypto&source=bl&ots=eAOarG8b3D&sig=ACfU3U1vOALyOL63rwHll5jzZhdnu5kGUw&hl=en&sa=X&ved=2ahUKEwiP35T8vK_qAhVFip4KHWI1BZcQ6AEwDHoECA0QAQ#v=onepage&q=%22reputability%22%20crypto&f=false https://books.google.com/books?id=_d7RUNF-2tcC&pg=PR21&lpg=P... [3] https://books.google.com/books?id=PHBTDwAAQBAJ&pg=PA61&lpg=PA61&dq=%22reputability%22+crypto&source=bl&ots=_5ow00ZlU9&sig=ACfU3U1otQu_phi4LZwzBq-sHu8vFTZDKQ&hl=en&sa=X&ved=2ahUKEwiP35T8vK_qAhVFip4KHWI1BZcQ6AEwC3oECAsQAQ#v=onepage&q=%22reputability%22%20crypto&f=false https://books.google.com/books?id=PHBTDwAAQBAJ&pg=PA61&lpg=P...

deleted 6y ago

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