tlslite.utils.asn1parser module¶
Abstract Syntax Notation One (ASN.1) parsing
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class
tlslite.utils.asn1parser.
ASN1Parser
(bytes)¶ Bases:
object
Parser and storage of ASN.1 DER encoded objects.
Variables: - length (int) – length of the value of the tag
- value (bytearray) – literal value of the tag
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__init__
(bytes)¶ Create an object from bytes.
Parameters: bytes (bytearray) – DER encoded ASN.1 object
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getChild
(which)¶ Return n-th child assuming that the object is a SEQUENCE.
Parameters: which (int) – ordinal of the child to return Return type: ASN1Parser Returns: decoded child object
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getChildBytes
(which)¶ Return raw encoding of n-th child, assume self is a SEQUENCE
Parameters: which (int) – ordinal of the child to return Return type: bytearray Returns: raw child object
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getChildCount
()¶ Return number of children, assuming that the object is a SEQUENCE.
Return type: int Returns: number of children in the object
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class
tlslite.utils.asn1parser.
ASN1Type
(tag_class, is_primitive, tag_id)¶ Bases:
object
Class that represents the ASN.1 type bit octet. Consists of a class (universal(0), application(1), context-specific(2) or private(3)), boolean value that indicates if a type is constructed or primitive and the ASN1 type itself.
Variables: - field – bit octet
- tagClass (int) – type’s class
- isPrimitive (int) – equals to 0 if the type is primitive, 1 if not
- tagId (int) – ANS1 tag number
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__init__
(tag_class, is_primitive, tag_id)¶ Initialize self. See help(type(self)) for accurate signature.