Signed-off-by: Marcin Woźniak <y0rune@aol.com>
This commit is contained in:
Marcin Woźniak 2020-11-30 20:05:39 +01:00
parent 4ad140de2a
commit 840f039acf
Signed by: y0rune
GPG Key ID: F204C385F57EB348

113
5-rsa/zad4-n.rb Executable file
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@ -0,0 +1,113 @@
#!/usr/bin/ruby
######################################
#
# Marcin Woźniak
# s434812
#
#####################################
load 'modul1.rb'
def factorial(n)
if n == 0
return 1
else
return n * factorial(n-1)
end
end
def mysqrt(x)
return 0 if x==0
m=x
p=x
loop do
r=(m+p/m)/2
return m if m<=r
m=r
end
end
def secondSqrt(n)
return n.to_s(2).length-1
end
def divisors_of(n)
result = []
arr = []
1.times do |i|
arr[i] = Thread.new {
counter = 100
a = 2
w = nwd(a,n)
if w > 1 && w != n
result << w
end
for r in 2..100
d = nwd(betterExponentiation(a,factorial(r),n)-1,n)
if d == n
break
end
if d != n && d > 1 && d.odd?
result << d
end
if d == 1
next
end
r = r + 1
end
}
end
arr.each {|t| t.join}
return result.max
end
def RecoverPrimeFactors(n,e,d)
k = d * e - 1
v = 0
v0 = 0
if primalityTest(k)
puts "Prime factors not found"
return false
end
t = divisors_of(k)
s = (k/t).to_s(2).length-1
a = SecureRandom.random_number(1..n)
if reciprocal_Phi_p(a,n) > 1
return a
end
v = betterExponentiation(a,t,n)
if v == 1 % n
return 0
end
while v != 1 % n
v0 = v % n
v = betterExponentiation(v,2,n)
end
if v == -1 % n
return 0
else
d = reciprocal_Phi_p(v0 + 1, n)
return d
end
end
#n=143
n=14205142842144491469901035779943007321473952670460614909740188710462796861921791780746014298824348546889748863603913825380912304112461129061114480661500416910991853573649055897001583708234998530660447745535711467407798340361335928981312718926721467943464464347521000503179497153112764130114342341251457556854374337702225661788558784747007799183865452550277915792606190524979919835785502848268656744723582283945123371679980696891117277548547543492116459573915049465031893477375432302554045103150951955486083526016584926750095118984741954481489582827589374811855794969993254570253121737541317841105374871
e=2219702669760051625529760071259189046161364151701596790770763259600544290997125107128138578832480323854037838605599695123440903054424577956799678397891626783444723950147784407335462559143107157658471735164714153971357443698994082727673072343180069044835094856719244582969485137575845153825021391095268519544748057926663150576101990156077844973202826679622719216615756960610764785110408304311098865781072786879379296360025429207038042833064515876868608188436266546466015175298619766069707237580766787423687287858279125035537409323009740621048068813783768774814593993312720811077575752373741693972477513
d=9738454175598488918517912045396815318351885031131011603301149540233201870415928124228184903947308481461717153640402767289853198952704967449300122329014740408508653613839688094250923162490670540988214688775753190900423588412005697560323304500348114898045236656807283167901253083798426709790746938525240264995502098847606530252043043212677911465343705421183831116604350283789270965024124861992541018116786274867535581082248878546385006259988838129620903989258127062367035340066868353921340378027331177496332241490297041686454303452932424111634076797215417394272455217584601075851777273706083879476230809
puts RecoverPrimeFactors(n,e,d).inspect