What is wrong with a good ol' SHA-512? Sent from my iPhone
> On 2013年12月2日, at 21:50, "Gerriet M. Denkmann" <gerr...@mdenkmann.de> wrote: > > Assuming that a typical image has 243.3 k Bytes, or 1 993 221 bits. And that > a hash has 64 bits. > > Then there are 2^1 993 221 different images, and 2^64 hash values. > One hash value is thus shared on average by 2^1 993 157 images. = (2^10)^199 > 315.7 = 10^600 000 > > So it does not look so very unlikely that two different images might share a > hash value. > > Or did I make some mistake? > > Gerriet. > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/xcvista%40me.com > > This email sent to xcvi...@me.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
