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'''ASN.1 definitions.
Not all ASN.1-handling code use these definitions, but when it does, they should be here.
'''
from pyasn1.type import univ, namedtype, tag
class PubKeyHeader(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('oid', univ.ObjectIdentifier()),
namedtype.NamedType('parameters', univ.Null()),
)
class OpenSSLPubKey(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('header', PubKeyHeader()),
# This little hack (the implicit tag) allows us to get a Bit String as Octet String
namedtype.NamedType('key', univ.OctetString().subtype(
implicitTag=tag.Tag(tagClass=0, tagFormat=0, tagId=3))),
)
class AsnPubKey(univ.Sequence):
'''ASN.1 contents of DER encoded public key:
RSAPublicKey ::= SEQUENCE {
modulus INTEGER, -- n
publicExponent INTEGER, -- e
'''
componentType = namedtype.NamedTypes(
namedtype.NamedType('modulus', univ.Integer()),
namedtype.NamedType('publicExponent', univ.Integer()),
)
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