def new_pub_key(e_n):
# type: (Tuple[bytes, bytes]) -> RSA_pub
"""
Instantiate an RSA_pub object from an (e, n) tuple.
:param e: The RSA public exponent; it is a string in OpenSSL's MPINT
format - 4-byte big-endian bit-count followed by the
appropriate number of bits.
:param n: The RSA composite of primes; it is a string in OpenSSL's
MPINT format - 4-byte big-endian bit-count followed by the
appropriate number of bits.
:return: M2Crypto.RSA.RSA_pub object.
"""
(e, n) = e_n
rsa = m2.rsa_new()
m2.rsa_set_en(rsa, e, n)
return RSA_pub(rsa, 1)
def new_pub_key(e_n):
# type: (Tuple[bytes, bytes]) -> RSA_pub
"""
Instantiate an RSA_pub object from an (e, n) tuple.
:param e: The RSA public exponent; it is a string in OpenSSL's MPINT
format - 4-byte big-endian bit-count followed by the
appropriate number of bits.
:param n: The RSA composite of primes; it is a string in OpenSSL's
MPINT format - 4-byte big-endian bit-count followed by the
appropriate number of bits.
:return: M2Crypto.RSA.RSA_pub object.
"""
(e, n) = e_n
rsa = m2.rsa_new()
m2.rsa_set_en(rsa, e, n)
return RSA_pub(rsa, 1)
def test_set_bn(self):
rsa = RSA.load_pub_key(self.pubkey)
with self.assertRaises(RSA.RSAError):
m2.rsa_set_en(rsa.rsa,
b'\000\000\000\003\001\000\001',
b'\000\000\000\003\001')
