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gehlen
(@gehlen)
Junior Member

I have a photo and a PhotoDNA Hash from this photo. How am i learn if this photo is in PhotoDNA database? Thanks in advance

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Topic starter Posted : 08/03/2018 3:11 pm
mcman
(@mcman)
Active Member

I have a photo and a PhotoDNA Hash from this photo. How am i learn if this photo is in PhotoDNA database? Thanks in advance

There is no PhotoDNA database. PhotoDNA is a hash algorithm like MD5 or SHA1 except it's a fuzzy hash that will match on similar photos. Many hash databases make use of and store PhotoDNA hashes but PhotoDNA doesn't have it's own database.

Jamie

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Posted : 08/03/2018 3:38 pm
gehlen
(@gehlen)
Junior Member

Okay then I'll ask you. The photo in his hand is an obscene photograph. However, it is not clear whether it belongs to a child or not. How can I find out if this photo is included in the international child pornography database?

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Topic starter Posted : 08/03/2018 4:02 pm
talon0769
(@talon0769)
New Member

If you are in the United States you can contact the National Center for Missing and Exploited Children Foundation. They may be able to help. When I worked with the North Carolina Internet Crimes Against Children Task Force a few years ago they were the ones that had that capability.

http//www.missingkids.com/home

Hope this helps!

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Posted : 08/03/2018 10:10 pm
mcman
(@mcman)
Active Member

Okay then I'll ask you. The photo in his hand is an obscene photograph. However, it is not clear whether it belongs to a child or not. How can I find out if this photo is included in the international child pornography database?

A lot of groups in NA use the Project VIC hashsets for CSAM and in Europe they may use CAID or Project VIC or a few others. I'm not sure what they're using in Turkey to be honest. I would reach out to ICMEC to see if they can be of assistance. If you're law enforcement there should be something already established by your agency or organization.

Jamie

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Posted : 09/03/2018 12:53 pm
jaclaz
(@jaclaz)
Community Legend

I have a photo and a PhotoDNA Hash from this photo. How am i learn if this photo is in PhotoDNA database? Thanks in advance

There is no PhotoDNA database. PhotoDNA is a hash algorithm like MD5 or SHA1 except it's a fuzzy hash that will match on similar photos. Many hash databases make use of and store PhotoDNA hashes but PhotoDNA doesn't have it's own database.

Jamie

Well, yes and no.

The database exists with PhotoDNA records for IIOC, there are actually two (three) of them, one is called Child Exploitation Tracking System (CETS), curiously initiated in Canada
https://en.wikipedia.org/wiki/Child_Exploitation_Tracking_System

and the other one is Project Vic (managed by the ICMEC)

https://en.wikipedia.org/wiki/International_Centre_for_Missing_%26_Exploited_Children#Project_Vic

and a third one managed directly by Microsoft via Microsoft Azure
https://www.microsoft.com/en-us/photodna

This latter is reserved to operators like online services

Who can get PhotoDNA Cloud Service, and how?

Intended users are trusted online service providers and businesses hosting user-generated content. This service is not intended for use by law enforcement at this time. Service applicants will submit an online form and subscriptions are approved on a case-by-case basis. This evaluation process is performed by a third party and involves careful consideration of organization-specific attributes and other relevant qualifications.

CEST is AFAIK only accessible through national police agreement, cannot say if Turkey has such agreement, so, as talon0769 suggested, contacting the NCMEC or the ICMEC
https://www.icmec.org/
is likely the best choice.

jaclaz

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Posted : 09/03/2018 12:54 pm
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