Python univ.Sequence方法代码示例

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def convertPKCS1toPKCS8pubKey(bitsdata):
    pubkey_pkcs1_b64 = b''.join(bitsdata.split(b'\n')[1:-2])
    pubkey_pkcs1, restOfInput = der_decoder.decode(base64.b64decode(pubkey_pkcs1_b64))
    bitstring = univ.Sequence()
    bitstring.setComponentByPosition(0, univ.Integer(pubkey_pkcs1[0]))
    bitstring.setComponentByPosition(1, univ.Integer(pubkey_pkcs1[1]))
    bitstring = der_encoder.encode(bitstring)
    try:
        bitstring = ''.join([('00000000'+bin(ord(x))[2:])[-8:] for x in list(bitstring)])
    except:
        bitstring = ''.join([('00000000'+bin(x)[2:])[-8:] for x in list(bitstring)])
    bitstring = univ.BitString("'%s'B" % bitstring)
    pubkeyid = univ.Sequence()
    pubkeyid.setComponentByPosition(0, univ.ObjectIdentifier('1.2.840.113549.1.1.1')) # == OID for rsaEncryption
    pubkeyid.setComponentByPosition(1, univ.Null(''))
    pubkey_seq = univ.Sequence()
    pubkey_seq.setComponentByPosition(0, pubkeyid)
    pubkey_seq.setComponentByPosition(1, bitstring)
    base64.MAXBINSIZE = (64//4)*3
    res =  b"-----BEGIN PUBLIC KEY-----\n"
    res += base64.encodestring(der_encoder.encode(pubkey_seq))
    res += b"-----END PUBLIC KEY-----\n"
    return res 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def setComponentByPosition(self, idx, value=None,
                               verifyConstraints=True,
                               exactTypes=False,
                               matchTags=True,
                               matchConstraints=True):
        if idx == 0:  # controlType
            try:
                cls = KNOWN_CONTROLS[value]
                if self.__class__ is not cls:
                    self.__class__ = cls
            except KeyError:
                pass
        return univ.Sequence.setComponentByPosition(self, idx, value=value,
                                                    verifyConstraints=verifyConstraints,
                                                    exactTypes=exactTypes,
                                                    matchTags=matchTags,
                                                    matchConstraints=matchConstraints) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def _application_tag(tag_value):
    return univ.Sequence.tagSet.tagExplicitly(
        tag.Tag(tag.tagClassApplication, tag.tagFormatConstructed,
                int(tag_value))) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def setComponentByPosition(self, idx, value=None,
                               verifyConstraints=True,
                               matchTags=True,
                               matchConstraints=True):
        if idx == 0:  # controlType
            try:
                cls = KNOWN_CONTROLS[value]
                if self.__class__ is not cls:
                    self.__class__ = cls
            except KeyError:
                pass
        return univ.Sequence.setComponentByPosition(self, idx, value=value,
                                                    verifyConstraints=verifyConstraints,
                                                    matchTags=matchTags,
                                                    matchConstraints=matchConstraints) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def prettyPrint(self, scope=0):
        r = univ.Sequence.prettyPrint(self, scope)
        decodedControlValue = self.decodeControlValue()
        if decodedControlValue is not None:
            r = r[:r.rindex('=') + 1] + '%s\n' % decodedControlValue.prettyPrint(scope + 1)
        return r 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def setComponentByPosition(self, idx, value=univ.noValue,
                               verifyConstraints=True,
                               matchTags=True,
                               matchConstraints=True):
        if idx == 0:  # controlType
            try:
                cls = KNOWN_CONTROLS[value]
                if self.__class__ is not cls:
                    self.__class__ = cls
            except KeyError:
                pass
        return univ.Sequence.setComponentByPosition(self, idx, value=value,
                                                    verifyConstraints=verifyConstraints,
                                                    matchTags=matchTags,
                                                    matchConstraints=matchConstraints) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def _save_pkcs1_der(self):
        """Saves the private key in PKCS#1 DER format.

        @returns: the DER-encoded private key.
        """

        from pyasn1.type import univ, namedtype
        from pyasn1.codec.der import encoder

        class AsnPrivKey(univ.Sequence):
            componentType = namedtype.NamedTypes(
                    namedtype.NamedType('version', univ.Integer()),
                    namedtype.NamedType('modulus', univ.Integer()),
                    namedtype.NamedType('publicExponent', univ.Integer()),
                    namedtype.NamedType('privateExponent', univ.Integer()),
                    namedtype.NamedType('prime1', univ.Integer()),
                    namedtype.NamedType('prime2', univ.Integer()),
                    namedtype.NamedType('exponent1', univ.Integer()),
                    namedtype.NamedType('exponent2', univ.Integer()),
                    namedtype.NamedType('coefficient', univ.Integer()),
            )

        # Create the ASN object
        asn_key = AsnPrivKey()
        asn_key.setComponentByName('version', 0)
        asn_key.setComponentByName('modulus', self.n)
        asn_key.setComponentByName('publicExponent', self.e)
        asn_key.setComponentByName('privateExponent', self.d)
        asn_key.setComponentByName('prime1', self.p)
        asn_key.setComponentByName('prime2', self.q)
        asn_key.setComponentByName('exponent1', self.exp1)
        asn_key.setComponentByName('exponent2', self.exp2)
        asn_key.setComponentByName('coefficient', self.coef)

        return encoder.encode(asn_key) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def _save_pkcs1_der(self):
        '''Saves the private key in PKCS#1 DER format.

        @returns: the DER-encoded private key.
        '''

        from pyasn1.type import univ, namedtype
        from pyasn1.codec.der import encoder

        class AsnPrivKey(univ.Sequence):
            componentType = namedtype.NamedTypes(
                namedtype.NamedType('version', univ.Integer()),
                namedtype.NamedType('modulus', univ.Integer()),
                namedtype.NamedType('publicExponent', univ.Integer()),
                namedtype.NamedType('privateExponent', univ.Integer()),
                namedtype.NamedType('prime1', univ.Integer()),
                namedtype.NamedType('prime2', univ.Integer()),
                namedtype.NamedType('exponent1', univ.Integer()),
                namedtype.NamedType('exponent2', univ.Integer()),
                namedtype.NamedType('coefficient', univ.Integer()),
            )

        # Create the ASN object
        asn_key = AsnPrivKey()
        asn_key.setComponentByName('version', 0)
        asn_key.setComponentByName('modulus', self.n)
        asn_key.setComponentByName('publicExponent', self.e)
        asn_key.setComponentByName('privateExponent', self.d)
        asn_key.setComponentByName('prime1', self.p)
        asn_key.setComponentByName('prime2', self.q)
        asn_key.setComponentByName('exponent1', self.exp1)
        asn_key.setComponentByName('exponent2', self.exp2)
        asn_key.setComponentByName('coefficient', self.coef)

        return encoder.encode(asn_key) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def decodeMessageVersion(wholeMsg):
    try:
        seq, wholeMsg = decoder.decode(
            wholeMsg, asn1Spec=univ.Sequence(), recursiveFlag=0
        )
        ver, wholeMsg = decoder.decode(
            wholeMsg, asn1Spec=univ.Integer(), recursiveFlag=0
        )
        if eoo.endOfOctets.isSameTypeWith(ver):
            raise ProtocolError('EOO at SNMP version component')
        return ver
    except PyAsn1Error:
        raise ProtocolError('Invalid BER at SNMP version component') 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def _save_pkcs1_der(self):
        """Saves the private key in PKCS#1 DER format.

        :returns: the DER-encoded private key.
        :rtype: bytes
        """

        from pyasn1.type import univ, namedtype
        from pyasn1.codec.der import encoder

        class AsnPrivKey(univ.Sequence):
            componentType = namedtype.NamedTypes(
                namedtype.NamedType('version', univ.Integer()),
                namedtype.NamedType('modulus', univ.Integer()),
                namedtype.NamedType('publicExponent', univ.Integer()),
                namedtype.NamedType('privateExponent', univ.Integer()),
                namedtype.NamedType('prime1', univ.Integer()),
                namedtype.NamedType('prime2', univ.Integer()),
                namedtype.NamedType('exponent1', univ.Integer()),
                namedtype.NamedType('exponent2', univ.Integer()),
                namedtype.NamedType('coefficient', univ.Integer()),
            )

        # Create the ASN object
        asn_key = AsnPrivKey()
        asn_key.setComponentByName('version', 0)
        asn_key.setComponentByName('modulus', self.n)
        asn_key.setComponentByName('publicExponent', self.e)
        asn_key.setComponentByName('privateExponent', self.d)
        asn_key.setComponentByName('prime1', self.p)
        asn_key.setComponentByName('prime2', self.q)
        asn_key.setComponentByName('exponent1', self.exp1)
        asn_key.setComponentByName('exponent2', self.exp2)
        asn_key.setComponentByName('coefficient', self.coef)

        return encoder.encode(asn_key) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def __sig__(self):
        # return the signature data into an ASN.1 sequence of integers in DER format
        seq = Sequence(componentType=NamedTypes(*[NamedType(n, Integer()) for n in self.__mpis__]))
        for n in self.__mpis__:
            seq.setComponentByName(n, getattr(self, n))

        return encoder.encode(seq) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def from_signer(self, sig):
        ##TODO: just use pyasn1 for this
        def _der_intf(_asn):
            if _asn[0] != 0x02:  # pragma: no cover
                raise ValueError("Expected: Integer (0x02). Got: 0x{:02X}".format(_asn[0]))
            del _asn[0]

            if _asn[0] & 0x80:  # pragma: no cover
                llen = _asn[0] & 0x7F
                del _asn[0]

                flen = self.bytes_to_int(_asn[:llen])
                del _asn[:llen]

            else:
                flen = _asn[0] & 0x7F
                del _asn[0]

            i = self.bytes_to_int(_asn[:flen])
            del _asn[:flen]
            return i

        if isinstance(sig, bytes):
            sig = bytearray(sig)

        # this is a very limited asn1 decoder - it is only intended to decode a DER encoded sequence of integers
        if not sig[0] == 0x30:
            raise NotImplementedError("Expected: Sequence (0x30). Got: 0x{:02X}".format(sig[0]))
        del sig[0]

        # skip the sequence length field
        if sig[0] & 0x80:  # pragma: no cover
            llen = sig[0] & 0x7F
            del sig[:llen + 1]

        else:
            del sig[0]

        self.r = MPI(_der_intf(sig))
        self.s = MPI(_der_intf(sig)) 

# 需要导入模块: from pyasn1.type import univ [as 别名]
# 或者: from pyasn1.type.univ import Sequence [as 别名]
def _toString_OPENSSH(self, extra):
        """
        Return a public or private OpenSSH string.  See
        _fromString_PUBLIC_OPENSSH and _fromString_PRIVATE_OPENSSH for the
        string formats.  If extra is present, it represents a comment for a
        public key, or a passphrase for a private key.

        @type extra: C{str}
        @rtype: C{str}
        """
        data = self.data()
        if self.isPublic():
            b64Data = base64.encodestring(self.blob()).replace('\n', '')
            if not extra:
                extra = ''
            return ('%s %s %s' % (self.sshType(), b64Data, extra)).strip()
        else:
            lines = ['-----BEGIN %s PRIVATE KEY-----' % self.type()]
            if self.type() == 'RSA':
                p, q = data['p'], data['q']
                objData = (0, data['n'], data['e'], data['d'], q, p,
                        data['d'] % (q - 1), data['d'] % (p - 1),
                        data['u'])
            else:
                objData = (0, data['p'], data['q'], data['g'], data['y'],
                    data['x'])
            asn1Sequence = univ.Sequence()
            for index, value in itertools.izip(itertools.count(), objData):
                asn1Sequence.setComponentByPosition(index, univ.Integer(value))
            asn1Data = berEncoder.encode(asn1Sequence)
            if extra:
                iv = randbytes.secureRandom(8)
                hexiv = ''.join(['%02X' % ord(x) for x in iv])
                lines.append('Proc-Type: 4,ENCRYPTED')
                lines.append('DEK-Info: DES-EDE3-CBC,%s\n' % hexiv)
                ba = md5(extra + iv).digest()
                bb = md5(ba + extra + iv).digest()
                encKey = (ba + bb)[:24]
                padLen = 8 - (len(asn1Data) % 8)
                asn1Data += (chr(padLen) * padLen)
                asn1Data = DES3.new(encKey, DES3.MODE_CBC,
                    iv).encrypt(asn1Data)
            b64Data = base64.encodestring(asn1Data).replace('\n', '')
            lines += [b64Data[i:i + 64] for i in range(0, len(b64Data), 64)]
            lines.append('-----END %s PRIVATE KEY-----' % self.type())
            return '\n'.join(lines)