Encrypted aggregation:
All answers are aggregated in encrypted form on the server. Only you, as the survey creator (with the access file), can request and decrypt the aggregate results. No one else can decrypt the responses.
Current Limitations
No single choice or multiple choice questions: Only number questions with min/max boundaries are supported at this time.
No free-text responses: It is not yet possible to collect or encrypt free-text answers.
Communication is not private: Survey participation and result retrieval are not protected by anonymization or end-to-end encryption of metadata. Network-level observers and the server can see who participates and when.
Output privacy is not addressed: While individual responses are encrypted, the aggregated results may still leak information about participants. Future versions will address output privacy.
This is an experimental demonstration of encrypted surveys. Please do not use it for sensitive or production data.
Encproc Survey vs. Traditional Survey Platforms
Encproc Survey
Traditional Platforms (SurveyMonkey, Mentimeter, Doodle, Lamapoll, Limesurvey, Tivian, ...)
Individual Answer Confidentiality
Yes (Homomorphic)
No
Fully-fledged Survey Service
Not Yet
Yes
Survey Meta-Data Confidentiality
Not Yet
No
Output Privacy (Differential Privacy et al.)
Not Yet
No
Metadata Privacy (TOR et al.)
Not Yet
No
0
Click if you want to see the “Not Yet” features become reality!