| # Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu> |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """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()), |
| ) |