fmouhart/thesis
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Corrections David

Browse Source
This commit is contained in:
Fabrice Mouhartem
2018-08-19 16:07:38 -07:00
parent 13474a1adb
commit 44f65c6f6c
9 changed files with 16 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
chap-introduction.tex
View File

@ -58,7 +58,7 @@ The details of these two structures are given in~\cref{ch:structures}.
\subsection{Zero-Knowledge Proofs}
As explained before, zero-knowledge proofs are a basic building block for privacy-preserving cryptography.
They requires completeness, soundness and zero-knowledge properties.
They require completeness, soundness and zero-knowledge properties.
Completeness captures the correctness of the protocol if everyone is honest. In the case of a dishonest prover, soundness asks the probability that the verifier is convinced to be negligible.
On the contrary, if the verifier is cheating, the zero-knowledge property guarantees that the prover's secret remains hidden.
@ -169,7 +169,7 @@ In order to keep user accountable for their actions, an opening authority is fur
More formally, a group signature scheme is a primitive allowing the sender to generate publicly verifiable proofs that: (1) The ciphertext is well-formed and intended to some registered group member who will be able to decrypt; (2) The opening authority will be able to identify the receiver if necessary; (3) The plaintext satisfies certain properties, such as being a witness for some public relation, or the private key that underlies a given public key.
In the model of Kiayias, Tsiounis and Yung~\cite{KTY07}, the message secrecy and anonymity properties are required to withstand active adversaries, which are granted access to decryption oracles in all security definitions.
A natural application is to allow a firewall to filter incoming all incoming encrypted emails except those intended for some certified organization members and the content of which is additionally guaranteed to satisfy certain requirements, like the absence of malware.
A natural application is to allow a firewall to filter all incoming encrypted emails except those intended for some certified organization members and the content of which is additionally guaranteed to satisfy certain requirements, like the absence of malware.
Furthermore, group encryption schemes are motivated by privacy applications such as anonymous trusted third parties, key recovery mechanisms or oblivious retriever storage system.
In cloud storage services, group encryption enables privacy-preserving asynchronous transfers of encrypted datasets.
Namely, it allows users to archive encrypted datasets on remote servers while convincing those servers that the data is indeed intended to some anonymous certified client who has a valid account to the storage provider.