def many():
for n in range(3, 10000, 2):
ft = flt(n)
if ft != bool(gmpy.is_prime(n)):
print "FT", ft, n
bt = b2spp(n)
if bt != bool(gmpy.is_prime(n)):
print "BT", bt, n
"""
def truncatable(_s):
s = str(_s)
l = len(s)
for i in range(l):
if not is_prime(int(s[i:])):
return False
if not is_prime(int(s[: i + 1])):
return False
return True
def gen_safe_prime(BIT_LEN):
found=False
while found==False:
q=random.randrange(2**(BIT_LEN-2),2**(BIT_LEN-1))
p=2*q+1
found=gmpy.is_prime(p) and gmpy.is_prime(q)
return p
def generate_amicable_pair(n, m, limit):
'''
Genereate amicable pair by Euler's rule
http://en.wikipedia.org/wiki/Euler's_rule
'''
lst = []
if (n <= m):
n += 1
m = 1
print n
print m
#Check n < sqrt(max potential amicable number) because max checked number is 10000
while n < limit**0.5:
while m < n:
p = (2**(n - m) + 1) * 2**m - 1
q = (2**(n - m) + 1) * 2**n - 1
r = (2**(n - m) + 1)**2 * 2**(m + n) - 1
pair = []
print n
print m
print p * q * 2**n
print r * 2**n
#Test
if is_prime(p) and is_prime(q) and is_prime(r):
pair.append(p * q * 2**n)
pair.append(r * 2**n)
lst.append(pair)
lst.append(n)
lst.append(m)
return lst
m += 1
n += 1
m = 1
return None
def main(cert_path, data_path, offset):
mod = get_modulus(cert_path)
mod = gmpy.mpz(mod, 16)
key_size = int(mod.bit_length() / 16)
offset = int(offset, 16)
print('Prime should be at offset: %x'%offset)
print('Key size: %d\n'%key_size)
with open(data_path, 'rb') as f:
mm_data = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
print('Hexdump of surrounding data:')
hexdump(mm_data, max(0, offset - 1024), 2048)
p = gmpy.mpz(long(mm_data, offset, key_size))
if gmpy.is_prime(p) and p != mod and mod % p == 0:
print('Prime factor found: %s\n'%p)
hexbytes = binascii.hexlify(mm_data[offset:offset+key_size]).decode('ascii').upper()
hexbytes = re.sub(r'(..)', r'\x\1', hexbytes)
print('Prime in greppable ascii: %s\n'%hexbytes)
p = gmpy.mpz(p)
e = gmpy.mpz(65537)
q = gmpy.divexact(mod, p)
assert(gmpy.is_prime(q))
phi = (p-1) * (q-1)
d = gmpy.invert(e, phi)
dp = d % (p - 1)
dq = d % (q - 1)
qinv = gmpy.invert(q, p)
seq = Sequence()
for x in [0, mod, e, d, p, q, dp, dq, qinv]:
seq.setComponentByPosition (len (seq), Integer (x))
print("\n\n-----BEGIN RSA PRIVATE KEY-----\n%s-----END RSA PRIVATE KEY-----\n\n"%base64.encodestring(encoder.encode(seq)).decode('ascii'))
else:
print('Prime factor not found')
def gen_safe_prime(BIT_LEN):
found = False
while found == False:
q = random.randrange(2**(BIT_LEN - 2), 2**(BIT_LEN - 1))
p = 2 * q + 1
found = gmpy.is_prime(p) and gmpy.is_prime(q)
return p
def many():
for n in range(3, 10000, 2):
ft = flt(n)
if ft != bool(gmpy.is_prime(n)):
print "FT", ft, n
bt = b2spp(n)
if bt != bool(gmpy.is_prime(n)):
print "BT", bt, n
"""
def factor(x):
if is_prime(x):
yield x
else:
for prime in (p for p in itertools.count(2) if is_prime(p)):
if prime > x**0.5 + 1:
return
if x % prime == 0:
for divisor in factor(x / prime):
yield divisor
yield prime
return
def _test_gp(self, gp, bits):
q = (gp.p - 1) / 2
self.assertTrue(gmpy.is_prime(gp.p))
self.assertTrue(gmpy.is_prime(q))
self.assertTrue(2 ** (bits - 1) < gp.p)
self.assertTrue(gp.p < 2 ** bits)
self.assertTrue(gp.g < gp.p)
self.assertTrue(3 < gp.g)
self.assertNotEqual(pow(gp.g, 2, gp.p), 1)
self.assertNotEqual(pow(gp.g, q, gp.p), 1)
self.assertNotEqual(divmod(gp.p, gp.g)[1], 0)
ginv = gmpy.invert(gp.g, gp.p)
self.assertNotEqual(divmod(gp.p - 1, ginv)[1], 0)
def _test_gp(self, gp, bits):
q = (gp.p - 1) / 2
self.assertTrue(gmpy.is_prime(gp.p))
self.assertTrue(gmpy.is_prime(q))
self.assertTrue(2**(bits - 1) < gp.p)
self.assertTrue(gp.p < 2**bits)
self.assertTrue(gp.g < gp.p)
self.assertTrue(3 < gp.g)
self.assertNotEqual(pow(gp.g, 2, gp.p), 1)
self.assertNotEqual(pow(gp.g, q, gp.p), 1)
self.assertNotEqual(divmod(gp.p, gp.g)[1], 0)
ginv = gmpy.invert(gp.g, gp.p)
self.assertNotEqual(divmod(gp.p - 1, ginv)[1], 0)
def find1(N, A=None):
if A == None:
A = gmpy.mpz(gmpy.sqrt(N) + 1)
k = A * A - N
assert gmpy.is_power(k)
x = gmpy.sqrt(A * A - N)
p, q = A - x, A + x
#print p
#print q
assert gmpy.is_prime(p)
assert gmpy.is_prime(q)
assert p * q == N
return p, q
def find1(N, A = None):
if A == None:
A = gmpy.mpz(gmpy.sqrt(N)+1)
k = A*A - N
assert gmpy.is_power(k)
x = gmpy.sqrt(A*A - N)
p, q = A - x, A + x
#print p
#print q
assert gmpy.is_prime(p)
assert gmpy.is_prime(q)
assert p*q==N
return p, q
def rsa(c, n, e, p, q=None):
if q == None:
q = n / p
assert gmpy.is_prime(p) and gmpy.is_prime(q)
f = n - p - q + 1
g, d, y = xgcd(e, f)
if d <= 0:
d = d + f
print g, d * e % f
pt = powmod(c, d, n)
bpt = convert_to_bits(pt, 1024)
hpt = bits_to_hex(bpt)
#print hpt
#print len(hex(pt))
return pt, ''.join([str(i) for i in bpt])
def rsa(c, n, e, p, q=None):
if q == None:
q = n/p
assert gmpy.is_prime(p) and gmpy.is_prime(q)
f = n - p - q + 1
g, d, y = xgcd(e, f)
if d <= 0:
d = d+f
print g, d*e % f
pt = powmod(c, d, n)
bpt = convert_to_bits(pt, 1024)
hpt = bits_to_hex(bpt)
#print hpt
#print len(hex(pt))
return pt, ''.join([str(i) for i in bpt])
def generate_safe_prime(nbits):
""" Finds a safe prime of nbits using probabilistic method rather than deterministic;
because a large prime number is required. """
q = number.getRandomNBitInteger(nbits)
while not gmpy.is_prime(q):
q = gmpy.next_prime(q)
return int(q)
def primenumgen(n):
p=['+',randnumgen(n)]
temp=getnum(p)
if(gmpy.is_prime(gmpy.mpz(temp))>0):
return getarr(temp)
else:
return primenumgen(n)
def gen_prime(BITS):
lb = 2 ** (BITS - 1)
ub = (2 * lb)
p = random.randrange(lb,ub)
while gmpy.is_prime(p) == False:
p = random.randrange(lb,ub)
return p
def factorize(x=c):
r'''
(Takes about 25ms, on c, on a first-generation Macbook Pro)
>>> factorize(a)
[3, 41]
>>> factorize(b)
[2, 2, 2, 3, 19]
>>>
'''
import gmpy as _g
savex = x
prime = 2
x = _g.mpz(x)
factors = []
while x >= prime:
newx, mult = x.remove(prime)
if mult:
factors.extend([int(prime)] * mult)
x = newx
prime = _g.next_prime(prime)
for factor in factors:
assert _g.is_prime(factor)
from operator import mul
assert reduce(mul, factors) == savex
return factors
def main(cert_path, data_path, offset):
mod = get_modulus(cert_path)
mod = int(mod, 16)
key_size = int(mod.bit_length() / 16)
offset = int(offset, 16)
print('Prime should be at offset: %x' % offset)
print('Key size: %d\n' % key_size)
with open(data_path, 'rb') as f:
data = f.read()
print('Hexdump of surrounding data:')
hexdump(data, max(0, offset - 1024), 2048)
p = long(data, offset, key_size)
if gmpy.is_prime(p) and p != mod and mod % p == 0:
print('Prime factor found: %s\n' % p)
hexbytes = binascii.hexlify(data[offset:offset +
key_size]).decode('ascii').upper()
hexbytes = re.sub(r'(..)', r'\x\1', hexbytes)
print('Prime in greppable ascii: %s\n' % hexbytes)
p = gmpy.mpz(p)
e = gmpy.mpz(65537)
q = gmpy.divexact(mod, p)
phi = (p - 1) * (q - 1)
d = gmpy.invert(e, phi)
dp = d % (p - 1)
dq = d % (q - 1)
qinv = gmpy.invert(q, p)
seq = Sequence()
for x in [0, mod, e, d, p, q, dp, dq, qinv]:
seq.setComponentByPosition(len(seq), Integer(x))
print(
"\n\n-----BEGIN RSA PRIVATE KEY-----\n%s-----END RSA PRIVATE KEY-----\n\n"
% base64.encodestring(encoder.encode(seq)).decode('ascii'))
else:
print('Prime factor not found')
def sq(q):
assert is_prime(q)
p = 2
while True:
if p != q:
yield p * p * q * q * q
p = int(next_prime(p))
def get_seq():
for i in range(100):
p = f(f(i)) + 1
if gmpy.is_prime(p) == 2:
yield p
else:
yield 0
def __init__(self, p=None, q=None, n=None, d=None, e=DEFAULT_EXP):
"""
Initialize RSA instance using primes (p, q)
or modulus and private exponent (n, d)
"""
self.e = e
if p and q:
assert gmpy.is_prime(p), 'p is not prime'
assert gmpy.is_prime(q), 'q is not prime'
self.p = p
self.q = q
elif n and d:
self.p, self.q = factor_modulus(n, d, e)
else:
raise ArgumentError('Either (p, q) or (n, d) must be provided')
self._calc_values()
def testLinearSystem(nbClients, maxexp=16, printing=False):
assert not gmpy.is_prime(nbClients) is True
cList = []
for i in range(0, nbClients):
cl = LS.LinearSystemPPATSClient(ppatspk, str(i))
cList.append(cl)
LSworker = LS.LinearSystemPPATSWorker(ppatspk, ppatssk, clientsList=cList)
LSworker.makeCircuit()
LSworker.fillInputGates(maxexp)
if printing: print 'inputs received by worker'
L = LSworker.decryptAndCheckProofs(printing)
if printing: print 'inputs decrypted and proofs checked by worker'
LSworker.recomInputs()
if printing: print 'inputs recommited by worker'
assert L == []
LSworker.solveSystem(B=None, printing=printing)
if printing: print 'Linear system solved by worker and proofs prepared'
ldict = {
'inputs':
('ciphertext', 'message', 'opening', 'openingclear', 'consist'),
'outputs': ('ciphertext', 'consist'),
'rest': ('ciphertext', 'consist', 'message', 'opening', 'openingclear')
}
newcirc = LSworker.circuit.copy()
newcirc.removeLevels(ldict)
LSworker.sendCircuit(newcirc)
cl0 = LSworker.clientsList[0]
L = cl0.checkLSCircuitProofs(printing)
assert L == []
if printing: print 'Solution of the linear System is:\n', LSworker.Z
return newcirc
def swap(s):
if '*' not in s:
if gmpy.is_prime(int(s)) > 0:
solns.append(s)
return
for i in range(10):
swap(s.replace('*', str(i)))
def primegen():
yield 2
i = 3
while True:
if is_prime(i):
yield i
i += 2
def sq(q):
assert is_prime(q)
p = 2
while True:
if p != q:
yield p*p*q*q*q
p = int(next_prime(p))
def get_primes():
"""Get primes up to 10000"""
L = []
for n in range(1, 10000, 2):
if gmpy.is_prime(n) > 0:
L.append(n)
return L
def __init__(self,F,irpoly,g=None,rep=None):
'''Define the base Field or extension Field and the irreducible polynomial
F is the base field on top of which the extension
field is built
irpoly is the irreducible polynomial used to build
the extension field as F/irpoly
g is a non quadratic residue used to compute square
roots, if it is set to None, computing a square root
will initialize g
rep is the representation of the root of irpoly
(note that letter 'A' is reserved for the Complex extension field)
'''
self.F = F
self.irpoly = irpoly
self.deg = len(irpoly.coef) # degree of the irreducible polynomial + 1
assert self.deg > 0
self.q = self.F.q**(self.deg-1) # order of the Field
self.tabular = self.table()
if rep == None :
self.rep = rd.choice(['B','C','D','E','F','G','H','J','K','L'])
#Choose a random representation letter
else :
self.rep = rep
self.char = F.char
self.primefield = gmpy.is_prime(self.char)
self.g = g # g is needed to compute square roots, it is a non quadratic residue
self.to_fingerprint = ["F","irpoly"]
self.to_export = {"fingerprint": [],"value": ["F","irpoly"]}
def _find_safe_prime(bits, randfunc=None):
""" Finds a safe prime of `bits` bits """
r = gmpy.mpz(number.getRandomNBitInteger(bits-1, randfunc))
q = gmpy.next_prime(r)
p = 2*q+1
if gmpy.is_prime(p):
return p
def extractkey(host, chunk, modulus):
#print "\nChecking for private key...\n"
n = int (modulus, 16)
keysize = n.bit_length() / 16
for offset in xrange (0, len (chunk) - keysize):
p = long (''.join (["%02x" % ord (chunk[x]) for x in xrange (offset + keysize - 1, offset - 1, -1)]).strip(), 16)
if gmpy.is_prime (p) and p != n and n % p == 0:
if opts.verbose:
print '\n\nFound prime: ' + str(p)
e = 65537
q = n / p
phi = (p - 1) * (q - 1)
d = gmpy.invert (e, phi)
dp = d % (p - 1)
dq = d % (q - 1)
qinv = gmpy.invert (q, p)
seq = Sequence()
for x in [0, n, e, d, p, q, dp, dq, qinv]:
seq.setComponentByPosition (len (seq), Integer (x))
print "\n\n-----BEGIN RSA PRIVATE KEY-----\n%s-----END RSA PRIVATE KEY-----\n\n" % base64.encodestring(encoder.encode (seq))
privkeydump = open("hb-certs/privkey_" + host + ".dmp", "a")
privkeydump.write(chunk)
return True
else:
return False
def calcprimes(N):
primes.append(gmpy.mpz(2))
i=gmpy.mpz(3)
while(i<=N):
if gmpy.is_prime(i)!=0:
primes.append(i)
i+=2
def testLinearSystem(nbClients,maxexp=16,printing=False):
assert not gmpy.is_prime(nbClients) is True
cList = []
for i in range(0,nbClients):
cl = LS.LinearSystemPPATSClient(ppatspk,str(i))
cList.append(cl)
LSworker = LS.LinearSystemPPATSWorker(ppatspk,ppatssk,clientsList=cList)
LSworker.makeCircuit()
LSworker.fillInputGates(maxexp)
if printing : print 'inputs received by worker'
L = LSworker.decryptAndCheckProofs(printing)
if printing : print 'inputs decrypted and proofs checked by worker'
LSworker.recomInputs()
if printing : print 'inputs recommited by worker'
assert L == []
LSworker.solveSystem(B=None,printing=printing)
if printing : print 'Linear system solved by worker and proofs prepared'
ldict = {'inputs':('ciphertext','message','opening','openingclear','consist'),'outputs':('ciphertext','consist'),'rest':('ciphertext','consist','message','opening','openingclear')}
newcirc = LSworker.circuit.copy()
newcirc.removeLevels(ldict)
LSworker.sendCircuit(newcirc)
cl0 = LSworker.clientsList[0]
L = cl0.checkLSCircuitProofs(printing)
assert L == []
if printing : print 'Solution of the linear System is:\n',LSworker.Z
return newcirc
def main():
n = int(sys.argv[2], 16)
keysize = n.bit_length() / 16
with open(sys.argv[1], "rb") as f:
chunk = f.read(16384)
while chunk:
for offset in xrange(0, len(chunk) - keysize):
p = long(
''.join([
"%02x" % ord(chunk[x])
for x in xrange(offset + keysize - 1, offset - 1, -1)
]).strip(), 16)
if gmpy.is_prime(p) and p != n and n % p == 0:
e = 65537
q = n / p
phi = (p - 1) * (q - 1)
d = gmpy.invert(e, phi)
dp = d % (p - 1)
dq = d % (q - 1)
qinv = gmpy.invert(q, p)
seq = Sequence()
for x in [0, n, e, d, p, q, dp, dq, qinv]:
seq.setComponentByPosition(len(seq), Integer(x))
print "\n\n-----BEGIN RSA PRIVATE KEY-----\n%s-----END RSA PRIVATE KEY-----\n\n" % base64.encodestring(
encoder.encode(seq))
sys.exit(0)
chunk = f.read(16384)
print "private key not found :("
if __name__ == '__main__':
main()
def is_prime(n,
rnd=default_pseudo_random,
k=DEFAULT_ITERATION,
algorithm=None):
'''Test if n is a prime number
m - the integer to test
rnd - the random number generator to use for the probalistic primality
algorithms,
k - the number of iterations to use for the probabilistic primality
algorithms,
algorithm - the primality algorithm to use, default is Miller-Rabin. The
gmpy implementation is used if gmpy is installed.
Return value: True is n seems prime, False otherwise.
'''
if algorithm is None:
algorithm = PRIME_ALGO
if algorithm == 'gmpy-miller-rabin':
if not gmpy:
raise NotImplementedError
return gmpy.is_prime(n, k)
elif algorithm == 'miller-rabin':
# miller rabin probability of primality is 1/4**k
return miller_rabin(n, k, rnd=rnd)
elif algorithm == 'solovay-strassen':
# for jacobi it's 1/2**k
return randomized_primality_testing(n, rnd=rnd, k=k * 2)
else:
raise NotImplementedError
def __init__(self, F, irpoly, g=None, rep=None):
'''Define the base Field or extension Field and the irreducible polynomial
F is the base field on top of which the extension
field is built
irpoly is the irreducible polynomial used to build
the extension field as F/irpoly
g is a non quadratic residue used to compute square
roots, if it is set to None, computing a square root
will initialize g
rep is the representation of the root of irpoly
(note that letter 'A' is reserved for the Complex extension field)
'''
self.F = F
self.irpoly = irpoly
self.deg = len(irpoly.coef) # degree of the irreducible polynomial + 1
assert self.deg > 0
self.q = self.F.q**(self.deg - 1) # order of the Field
self.tabular = self.table()
if rep == None:
self.rep = rd.choice(
['B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L'])
#Choose a random representation letter
else:
self.rep = rep
self.char = F.char
self.primefield = gmpy.is_prime(self.char)
self.g = g # g is needed to compute square roots, it is a non quadratic residue
self.to_fingerprint = ["F", "irpoly"]
self.to_export = {"fingerprint": [], "value": ["F", "irpoly"]}
def is_prime(n, rnd=default_pseudo_random, k=DEFAULT_ITERATION, algorithm=None):
'''Test if n is a prime number
m - the integer to test
rnd - the random number generator to use for the probalistic primality
algorithms,
k - the number of iterations to use for the probabilistic primality
algorithms,
algorithm - the primality algorithm to use, default is Miller-Rabin. The
gmpy implementation is used if gmpy is installed.
Return value: True is n seems prime, False otherwise.
'''
if algorithm is None:
algorithm = PRIME_ALGO
if algorithm == 'gmpy-miller-rabin':
if not gmpy:
raise NotImplementedError
return gmpy.is_prime(n, k)
elif algorithm == 'miller-rabin':
# miller rabin probability of primality is 1/4**k
return miller_rabin(n, k, rnd=rnd)
elif algorithm == 'solovay-strassen':
# for jacobi it's 1/2**k
return randomized_primality_testing(n, rnd=rnd, k=k*2)
else:
raise NotImplementedError
def is_prime(num):
if gmpy.is_prime(num) > 0:
return (True, num)
for i in range(2,num):
if (num % i) == 0:
return (False, i)
if i > 1000000:
return (True, num)
def is_primeproof(x):
st = str(x)
for i in range(len(st)):
for d in range(10):
stn = st[:i] + str(d) + st[i + 1:]
if is_prime(int(stn)) and not stn.startswith('0'):
return False
return True
def is_primeproof(x):
st = str(x)
for i in range(len(st)):
for d in range(10):
stn = st[:i] + str(d) + st[i+1:]
if is_prime(int(stn)) and not stn.startswith('0'):
return False
return True
def is_prime(x):
"""
Is prime x?
Args:
x : An integer
Return: Is prime x?
"""
return gmpy.is_prime(x) > 0
def nextPrime(a): a|=1 i=2 while True: a+=2 if gmpy.is_prime(a): #0=composite, 1=maybe prime 2=surely prime return a i+=1
def main(args):
primes = 0
for count, number in enumerate(gen()):
if gmpy.is_prime(number):
primes += 1
if primes:
if float(primes) / count <= args.ratio:
print number, primes, count, int(ceil(count / 4.0) * 2 + 1)
break
def prime_gen(k):
"""
Prime number p in [2^(k/2-1), 2^(k/2).
"""
assert k >= 1, "Sorry, need a bigger input"
p = 0
while not gmpy.is_prime(p):
p = random.randrange(pow(2, k//2-1) + 1, pow(2, k//2), 2)
return p
def get_primes():
"""Get a list of all 4 digit prime numbers"""
L = []
for n in range(1000, 10000):
if gmpy.is_prime(n) > 0:
L.append(n)
else:
continue
return L
def phi(x):
print(x)
global phi_results
if gmpy.is_prime(x):
return x-1
fac = prime_factors(x)
result = int( x * reduce(mul, [(1-1.0/p) for p in fac]) )
return result
def find3(N, A = None):
if A == None:
A = gmpy.mpz(gmpy.sqrt(24*N)+1)
k = A*A - 24*N
assert gmpy.is_power(k)
x = gmpy.sqrt(k)
print x
q1 = (A - x)/4
p1 = (A + x)/6
q2 = (A + x)/4
p2 = (A - x)/6
if gmpy.is_prime(p1) and gmpy.is_prime(q1) and p1*q1==N:
return p1, q1
elif gmpy.is_prime(p2) and gmpy.is_prime(q2) and p2*q2==N:
return p2, q2
else:
assert False
def find3(N, A=None):
if A == None:
A = gmpy.mpz(gmpy.sqrt(24 * N) + 1)
k = A * A - 24 * N
assert gmpy.is_power(k)
x = gmpy.sqrt(k)
print x
q1 = (A - x) / 4
p1 = (A + x) / 6
q2 = (A + x) / 4
p2 = (A - x) / 6
if gmpy.is_prime(p1) and gmpy.is_prime(q1) and p1 * q1 == N:
return p1, q1
elif gmpy.is_prime(p2) and gmpy.is_prime(q2) and p2 * q2 == N:
return p2, q2
else:
assert False
def pol_prime_length(a, b):
'''
Returns the maximum value of the argument of the polynom, at which polynom's value is a prime number
'''
n = 0
while is_prime(n**2 + a * n + b):
n += 1
# XXX: Always returning product is inefficient.
# XXX: Should compute it only for max() pair
return n, a*b
def calculate_division(test, n):
# print n
# print 'number of digits in test is {} in base 2'.format(_g.numdigits(test,2))
# print 'number of digits in n is {} in base 2'.format(_g.numdigits(n,2))
prime = _g.next_prime(test)
# print prime
if _g.is_prime(prime):
# print 'I got a prime {}'.format(prime)
if n % prime == 0:
print n
print 'success'
def calculate_division(test, n):
# print n
# print 'number of digits in test is {} in base 2'.format(_g.numdigits(test,2))
# print 'number of digits in n is {} in base 2'.format(_g.numdigits(n,2))
prime = _g.next_prime(test)
# print prime
if _g.is_prime(prime):
# print 'I got a prime {}'.format(prime)
if n % prime == 0:
print n
print 'success'
def __init__(self, p=None, q=None, n=None, d=None, e=DEFAULT_EXP):
"""
Initialize RSA instance using primes (p, q)
or modulus and private exponent (n, d)
"""
self.e = e
if p and q:
assert gmpy.is_prime(p), 'p is not prime'
assert gmpy.is_prime(q), 'q is not prime'
self.p = p
self.q = q
elif n and d:
self.p, self.q = factor_modulus(n, d, e)
else:
raise ArgumentError('Either (p, q) or (n, d) must be provided')
self._calc_values()
def count_safe_primes(bits):
randfunc = Crypto.Random.new().read
started = time.time()
ret = []
while True:
r = gmpy.mpz(number.getRandomNBitInteger(bits-1, randfunc))
q = gmpy.next_prime(r)
p = 2*q + 1
germain = gmpy.is_prime(p)
ret.append((germain, int(q - r)))
if time.time() - started > 60:
break
return ret
def makePrimeHarshads(max_digits, digits, aTotal):
if digits == 0:
for n in range(1, 10):
yield (str(n))
else:
for harshad in makePrimeHarshads(max_digits, digits - 1, aTotal):
for n in range(10):
new_harshad = int(harshad + str(n))
if isHarshad(new_harshad):
yield (str(new_harshad))
elif is_prime(new_harshad):
if isStrongHarshad(int(harshad)):
#print(new_harshad)
aTotal[0] += new_harshad
def El_Gamal_ParamGen():
p = 4
while not gmpy.is_prime(p):
r = randint(0, 2**64)
q = gmpy.next_prime(2**64 + r)
p = 2 * q + 1
g_prime = randint(1, int(p - 1))
g = pow(g_prime, 2, p) # generator of the group
assert pow(g, q, p) == 1
G = g, p, q
x = randint(1, int(q - 1)) # secret key
y = pow(g, x, p) # public key
pk = El_Gamal_PublicKey(G, y)
sk = El_Gamal_SecretKey(G, x)
return pk, sk
def vuln_to_dlp(nbit):
p = getPrime(nbit)
q = 2
while True:
q *= getPrime(random.randint(5, 16))
if q > 2**(nbit - 1):
if gmpy.is_prime(q + 1) > 0:
phi = (p - 1) * q
n = p * (q + 1)
while True:
e = random.randint(1, q)
d = gmpy.invert(e, phi)
if e * d % phi == 1:
return p, q + 1, n, e, phi, d
else:
q = 2
def is_prime(x, k):
y=0
if k!=2:
b=gmpy.mpz(1)
while x>0:
if x%2==1:
y+=b
x/=2
b*=k
x=y
if(gmpy.is_prime(x)!=0):
return 0
for i in primes:
if x%i==0:
return i
if i*i>x:
break
return 0
def __init__(self, p):
'''Defines the modulus p which must be a prime
'''
self.F = self
self.p = gmpy.mpz(p) # prime modulus
self.char = self.p # characteristic
self.q = self.p + 1 # order+1 #TODO : correct?
assert gmpy.is_prime(p)
self.rep = None
self.g = None
'''
g is a random quadratic residue used to compute square roots and it is
initialized the first time a square root is computed
'''
self.to_fingerprint = ["p"]
self.to_export = {"fingerprint": [], "value": ["p"]}
super(Field, self).__init__()
