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Signed-off-by: Marcin Woźniak <y0rune@aol.com>
This commit is contained in:
Marcin Woźniak 2020-12-12 20:08:47 +01:00
parent 25f32f3659
commit 891a862eb8
Signed by: y0rune
GPG Key ID: F204C385F57EB348
1 changed files with 21 additions and 28 deletions
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49
6/krzywa.rb
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@ -55,7 +55,7 @@ def generatorKrzywej(p)
end
def punktNaKrzywej(a,b,p)
if (delta(a,b,p) != 0) && (p % 4 == 3)
if (delta(a,b,p) != 0) && (p % 4 == 3)
while true
x = SecureRandom.random_number(0..p-1)
fx = rownanieKrzywej(a,b,p,x)
@ -85,13 +85,13 @@ def sumaPunktow(a,b,p,x1,y1,x2,y2)
# P + Q = R
if (x1 != x2) && (y1 != y2)
lambda = (((y2 - y1) % p) * reciprocal_Phi_p((x2 - x1),p)) % p
x3 = (betterExponentiation(lambda,2,p) - (x1 % p) - (x2 % p)) % p
x3 = (betterExponentiation(lambda,2,p) - (x1 % p) - (x2 % p)) % p
y3 = (lambda * (x1 - x3) - y1) % p
return x3,y3
end
# P + -Q = 0 DZIALA
if (x1 == x2) && (y1 == -y2)
puts "0 - el.neutralny"
puts "0 - el.neutralny"
return "0"
end
# P + P = 2P DZIALA
@ -106,7 +106,7 @@ def sumaPunktow(a,b,p,x1,y1,x2,y2)
return x2,y2
elsif (x2 == 0 && y2 == 0)
return x1,y1
end
end
end
#puts generatorKrzywej(11).inspect
@ -130,7 +130,6 @@ end
# 3) P + Q
# 4) 2R
#
##################################################
# Rozwiązanie:
a = 0
b = 1
@ -146,27 +145,20 @@ xr = 6
yr = 0
# 1) -Q
#puts punktPrzeciwny(xq,yq).inspect
puts punktPrzeciwny(xq,yq).inspect
# 2) R + [0,0]
#puts sumaPunktow(a,b,p,xr,yr,0,0).inspect
puts sumaPunktow(a,b,p,xr,yr,0,0).inspect
# 3) P + Q
#puts sumaPunktow(a,b,p,xp,yp,xq,yq).inspect
puts sumaPunktow(a,b,p,xp,yp,xq,yq).inspect
# 4) 2R
#puts sumaPunktow(a,b,p,xp,yp,xp,yp).inspect
puts sumaPunktow(a,b,p,xp,yp,xp,yp).inspect
##################################################
#puts generatorKrzywej(1183779584357076950937981497685946292711107412152534481102525547387604378262522402526266939).inspect
#puts punktNaKrzywej(239614427021073265587611886177902927263167863041565491257781227550405368115731464059190159,447169285435982716467332439542997876345372330045685811964291613238129105735899852114277221,1183779584357076950937981497685946292711107412152534481102525547387604378262522402526266939).inspect
#puts czyPunktNalezyDoKrzywej(2,7,11,7,1).inspect
#puts czyPunktNalezyDoKrzywej(2,7,11,2,2).inspect
#puts punktPrzeciwny(2,2).inspect
#puts sumaPunktow(2,2,17,5,1,5,1).inspect
# Zadanie od profersora
##################################################
# Zadanie od profersora
a=239614427021073265587611886177902927263167863041565491257781227550405368115731464059190159
b=447169285435982716467332439542997876345372330045685811964291613238129105735899852114277221
p=1183779584357076950937981497685946292711107412152534481102525547387604378262522402526266939
@ -174,24 +166,24 @@ px=28511363427946540331999658174016933832945460866981430913799017481424365599277
py=598700530906084162596261101440667782569915319623798143751082061599951188013331503150304328
# Zadanie 1
#puts
#puts "Zadanie 1"
#puts generatorKrzywej(p).inspect
puts
puts "Zadanie 1"
puts generatorKrzywej(p).inspect
# Zadanie 2
#puts
#puts "Zadanie 2"
#puts punktNaKrzywej(a,b,p).inspect
puts
puts "Zadanie 2"
puts punktNaKrzywej(a,b,p).inspect
# Zadanie 3
puts
puts
puts "Zadanie 3"
puts czyPunktNalezyDoKrzywej(a,b,p,px,py).inspect
# Zadanie 4
#puts
#puts "Zadanie 4"#
#puts punktPrzeciwny(px,py).inspect
puts
puts "Zadanie 4"
puts punktPrzeciwny(px,py).inspect
# Zadanie 5
puts
@ -203,3 +195,4 @@ qx=q[0].to_i
qy=q[1].to_i
r=sumaPunktow(a,b,p,px,py,qx,qy)
puts "P+Q=R=" + r.inspect
##################################################