Commit eae39974 by GUILLEVIC Aurore

### corrected sign error in param computation for running RELIC

parent e489fcbb
 ... @@ -195,11 +195,15 @@ def print_parameters_for_RELIC(E): ... @@ -195,11 +195,15 @@ def print_parameters_for_RELIC(E): # fill at 16 hexa digits, + 2 for the 'prefix '0x' makes 18 characters # fill at 16 hexa digits, + 2 for the 'prefix '0x' makes 18 characters print("P{0} {1:0=-#018x}".format(i, pi)) print("P{0} {1:0=-#018x}".format(i, pi)) i+=1 i+=1 g,u0,v0 = xgcd(E._p,2**64) # p_w = p-wordsize rounded to largest machine word if abs(u0) > abs(v0): # we need the inverse of -p, not of p u0,v0 = v0,u0 # so either #g,u0,v0 = xgcd(E._p,2**64) # g = u0*p + v0*2**64 #u0 = 2**64 - u0 # or directly: g,u0,v0 = xgcd(-E._p,2**64) # g = u0*p + v0*2**64 if u0 < 0: if u0 < 0: u0 = -u0; v0 = -v0 u0 = 2**64+u0 print("U0 {:0=-#018x}".format(u0)) print("U0 {:0=-#018x}".format(u0)) #params for the ep module in RELIC #params for the ep module in RELIC ... ...
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