Re: [viff-devel] Division
Hehe, my bad, it just happend to be that the random seed in the generate-config-files yielded zero for the 3 first random generations, i ran the config again and now i get "more random" numbers :D On Fri, 27 Feb 2009 14:32:21 +0100, Atle Mauland wrote: On Wed, 18 Feb 2009 18:13:00 +0100, Martin Geisler wrote: "Atle Mauland" writes: Hi Atle! Hi! I'm experimenting with the RSA problem in VIFF, so i need to have 2 primes (p and q) plus d (the inverse) secret shared. Ohh, cool! I have a couple of question regarding implemented functions in VIFF: Is there any way to do shared division / modulus in VIFF? We have this example program which Sigurd knows more about: http://hg.viff.dk/viff/file/tip/apps/divide.py What's the best way of getting a shared random bit / value? That would be prss_share_random(field, binary=True): I have written my code like this just to try this function: bit1 = runtime.prss_share_random(Zp, True) bit2 = runtime.prss_share_random(Zp, True) bit3 = runtime.prss_share_random(Zp, True) but every time I always get 0 (zero) as the answer for all bits... What do I do wrong? http://viff.dk/doc/passive.html#viff.passive.PassiveRuntime.prss_share_random I talked to my supervisor, Tord, and we are wondering if there is any bit-decomposition function implemented? Not directly, but maybe as part of the comparison protocols -- Tomas? ___ viff-devel mailing list (http://viff.dk/) viff-devel@viff.dk http://lists.viff.dk/listinfo.cgi/viff-devel-viff.dk ___ viff-devel mailing list (http://viff.dk/) viff-devel@viff.dk http://lists.viff.dk/listinfo.cgi/viff-devel-viff.dk
Re: [viff-devel] Division
On Wed, 18 Feb 2009 18:13:00 +0100, Martin Geisler wrote: "Atle Mauland" writes: Hi Atle! Hi! I'm experimenting with the RSA problem in VIFF, so i need to have 2 primes (p and q) plus d (the inverse) secret shared. Ohh, cool! I have a couple of question regarding implemented functions in VIFF: Is there any way to do shared division / modulus in VIFF? We have this example program which Sigurd knows more about: http://hg.viff.dk/viff/file/tip/apps/divide.py What's the best way of getting a shared random bit / value? That would be prss_share_random(field, binary=True): I have written my code like this just to try this function: bit1 = runtime.prss_share_random(Zp, True) bit2 = runtime.prss_share_random(Zp, True) bit3 = runtime.prss_share_random(Zp, True) but every time I always get 0 (zero) as the answer for all bits... What do I do wrong? http://viff.dk/doc/passive.html#viff.passive.PassiveRuntime.prss_share_random I talked to my supervisor, Tord, and we are wondering if there is any bit-decomposition function implemented? Not directly, but maybe as part of the comparison protocols -- Tomas? ___ viff-devel mailing list (http://viff.dk/) viff-devel@viff.dk http://lists.viff.dk/listinfo.cgi/viff-devel-viff.dk
Re: [viff-devel] Division
On Wed, 18 Feb 2009 18:13:00 +0100, Martin Geisler wrote: "Atle Mauland" writes: Hi Atle! Hi! I'm experimenting with the RSA problem in VIFF, so i need to have 2 primes (p and q) plus d (the inverse) secret shared. Ohh, cool! I have a couple of question regarding implemented functions in VIFF: Is there any way to do shared division / modulus in VIFF? We have this example program which Sigurd knows more about: http://hg.viff.dk/viff/file/tip/apps/divide.py Have any of you guys tried to include this file into the runtime.py file by overriding the __div__ operator? My attempt was obviously a fiasco :P If the overriding of __div__ does not work, any suggestion of how I could get my application to perform shared division with divide.py in cooperation with VIFF? What's the best way of getting a shared random bit / value? That would be prss_share_random(field, binary=True): http://viff.dk/doc/passive.html#viff.passive.PassiveRuntime.prss_share_random I talked to my supervisor, Tord, and we are wondering if there is any bit-decomposition function implemented? Not directly, but maybe as part of the comparison protocols -- Tomas? ___ viff-devel mailing list (http://viff.dk/) viff-devel@viff.dk http://lists.viff.dk/listinfo.cgi/viff-devel-viff.dk
Re: [viff-devel] Division
"Atle Mauland" writes: Hi Atle! > Hi! I'm experimenting with the RSA problem in VIFF, so i need to have > 2 primes (p and q) plus d (the inverse) secret shared. Ohh, cool! > I have a couple of question regarding implemented functions in VIFF: > > Is there any way to do shared division / modulus in VIFF? We have this example program which Sigurd knows more about: http://hg.viff.dk/viff/file/tip/apps/divide.py > What's the best way of getting a shared random bit / value? That would be prss_share_random(field, binary=True): http://viff.dk/doc/passive.html#viff.passive.PassiveRuntime.prss_share_random > I talked to my supervisor, Tord, and we are wondering if there is any > bit-decomposition function implemented? Not directly, but maybe as part of the comparison protocols -- Tomas? -- Martin Geisler VIFF (Virtual Ideal Functionality Framework) brings easy and efficient SMPC (Secure Multiparty Computation) to Python. See: http://viff.dk/. pgpluFgu7pZr6.pgp Description: PGP signature ___ viff-devel mailing list (http://viff.dk/) viff-devel@viff.dk http://lists.viff.dk/listinfo.cgi/viff-devel-viff.dk
