def to_pem(self, pem_format='PKCS8'):
if isinstance(self._prepared_key, pyrsa.PrivateKey):
der = self._prepared_key.save_pkcs1(format='DER')
if pem_format == 'PKCS8':
pem = pyrsa_pem.save_pem(PKCS8_RSA_HEADER + der, pem_marker='PRIVATE KEY')
elif pem_format == 'PKCS1':
pem = pyrsa_pem.save_pem(der, pem_marker='RSA PRIVATE KEY')
else:
raise ValueError("Invalid pem format specified: %r" % (pem_format,))
else:
if pem_format == 'PKCS8':
asn_key = AsnPubKey()
asn_key.setComponentByName('modulus', self._prepared_key.n)
asn_key.setComponentByName('publicExponent', self._prepared_key.e)
der = encoder.encode(asn_key)
header = PubKeyHeader()
header['oid'] = univ.ObjectIdentifier('1.2.840.113549.1.1.1')
pub_key = OpenSSLPubKey()
pub_key['header'] = header
pub_key['key'] = univ.BitString.fromOctetString(der)
der = encoder.encode(pub_key)
pem = pyrsa_pem.save_pem(der, pem_marker='PUBLIC KEY')
elif pem_format == 'PKCS1':
der = self._prepared_key.save_pkcs1(format='DER')
pem = pyrsa_pem.save_pem(der, pem_marker='RSA PUBLIC KEY')
else:
raise ValueError("Invalid pem format specified: %r" % (pem_format,))
return pem
def _save_pkcs1_der(self):
'''Saves the public key in PKCS#1 DER format.
@returns: the DER-encoded public key.
'''
from pyasn1.codec.der import encoder
from rsa.asn1 import AsnPubKey
# Create the ASN object
asn_key = AsnPubKey()
asn_key.setComponentByName('modulus', self.n)
asn_key.setComponentByName('publicExponent', self.e)
return encoder.encode(asn_key)
def _save_pkcs1_der(self):
"""Saves the public key in PKCS#1 DER format.
:returns: the DER-encoded public key.
:rtype: bytes
"""
from pyasn1.codec.der import encoder
from rsa.asn1 import AsnPubKey
# Create the ASN object
asn_key = AsnPubKey()
asn_key.setComponentByName('modulus', self.n)
asn_key.setComponentByName('publicExponent', self.e)
return encoder.encode(asn_key)
def ca():
lock_InformationPipe.acquire()
c = pipe.pop()
writeOutputFile('Commitment received from user: '******'ascii')
writeOutputFile('r_ca has been established: ' + r_ca.hex())
#----------------------------> send r_ca to user
pipe.append(r_ca)
writeOutputFile('r_ca sent to user --------->')
writeOutputFile('')
lock_InformationPipe.release()
time.sleep(3)
#----------------------------> waiting proof, N, j
lock_InformationPipe.acquire()
proof_w = pipe.pop()
writeOutputFile('Proof from user: '******'j from user: '******'p from user: '******'p from user: '******'modulus', p * q)
asnPK.setComponentByName('publicExponent', e)
pipe.append(True)
writeOutputFile('golberg Proof: valid.')
writeOutputFile('OK sent to user --------->')
lock_InformationPipe.release()
return asnPK
writeOutputFile('golberg Proof: Not valid. Error sent to user --------->')
pipe.append(False)
lock_InformationPipe.release()
raise_exception(Exception("golberg Proof: Not valid"))
def RSAVP1(key:AsnPubKey, s:int)-> int:
if s<0 or s > key.getComponentByName('modulus')-1:
raise ValueError("signature representative out of range")
return (s**key.getComponentByName('publicExponent')) % key.getComponentByName('modulus')