mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-18 10:50:40 +00:00
822 lines
25 KiB
Python
822 lines
25 KiB
Python
#
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# This file is part of pyasn1 software.
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#
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# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
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# License: http://snmplabs.com/pyasn1/license.html
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#
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from pyasn1 import debug
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from pyasn1 import error
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from pyasn1.codec.ber import eoo
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from pyasn1.compat.integer import to_bytes
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from pyasn1.compat.octets import (int2oct, oct2int, ints2octs, null,
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str2octs, isOctetsType)
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from pyasn1.type import char
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from pyasn1.type import tag
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from pyasn1.type import univ
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from pyasn1.type import useful
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__all__ = ['encode']
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LOG = debug.registerLoggee(__name__, flags=debug.DEBUG_ENCODER)
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class AbstractItemEncoder(object):
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supportIndefLenMode = True
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# An outcome of otherwise legit call `encodeFun(eoo.endOfOctets)`
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eooIntegerSubstrate = (0, 0)
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eooOctetsSubstrate = ints2octs(eooIntegerSubstrate)
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# noinspection PyMethodMayBeStatic
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def encodeTag(self, singleTag, isConstructed):
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tagClass, tagFormat, tagId = singleTag
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encodedTag = tagClass | tagFormat
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if isConstructed:
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encodedTag |= tag.tagFormatConstructed
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if tagId < 31:
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return encodedTag | tagId,
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else:
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substrate = tagId & 0x7f,
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tagId >>= 7
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while tagId:
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substrate = (0x80 | (tagId & 0x7f),) + substrate
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tagId >>= 7
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return (encodedTag | 0x1F,) + substrate
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def encodeLength(self, length, defMode):
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if not defMode and self.supportIndefLenMode:
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return (0x80,)
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if length < 0x80:
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return length,
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else:
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substrate = ()
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while length:
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substrate = (length & 0xff,) + substrate
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length >>= 8
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substrateLen = len(substrate)
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if substrateLen > 126:
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raise error.PyAsn1Error('Length octets overflow (%d)' % substrateLen)
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return (0x80 | substrateLen,) + substrate
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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raise error.PyAsn1Error('Not implemented')
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def encode(self, value, asn1Spec=None, encodeFun=None, **options):
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if asn1Spec is None:
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tagSet = value.tagSet
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else:
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tagSet = asn1Spec.tagSet
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# untagged item?
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if not tagSet:
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substrate, isConstructed, isOctets = self.encodeValue(
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value, asn1Spec, encodeFun, **options
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)
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return substrate
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defMode = options.get('defMode', True)
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for idx, singleTag in enumerate(tagSet.superTags):
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defModeOverride = defMode
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# base tag?
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if not idx:
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substrate, isConstructed, isOctets = self.encodeValue(
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value, asn1Spec, encodeFun, **options
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)
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if LOG:
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LOG('encoded %svalue %s into %s' % (
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isConstructed and 'constructed ' or '', value, substrate
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))
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if not substrate and isConstructed and options.get('ifNotEmpty', False):
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return substrate
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if not isConstructed:
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defModeOverride = True
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if LOG:
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LOG('overridden encoding mode into definitive for primitive type')
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header = self.encodeTag(singleTag, isConstructed)
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if LOG:
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LOG('encoded %stag %s into %s' % (
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isConstructed and 'constructed ' or '',
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singleTag, debug.hexdump(ints2octs(header))))
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header += self.encodeLength(len(substrate), defModeOverride)
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if LOG:
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LOG('encoded %s octets (tag + payload) into %s' % (
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len(substrate), debug.hexdump(ints2octs(header))))
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if isOctets:
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substrate = ints2octs(header) + substrate
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if not defModeOverride:
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substrate += self.eooOctetsSubstrate
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else:
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substrate = header + substrate
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if not defModeOverride:
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substrate += self.eooIntegerSubstrate
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if not isOctets:
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substrate = ints2octs(substrate)
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return substrate
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class EndOfOctetsEncoder(AbstractItemEncoder):
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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return null, False, True
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class BooleanEncoder(AbstractItemEncoder):
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supportIndefLenMode = False
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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return value and (1,) or (0,), False, False
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class IntegerEncoder(AbstractItemEncoder):
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supportIndefLenMode = False
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supportCompactZero = False
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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if value == 0:
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if LOG:
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LOG('encoding %spayload for zero INTEGER' % (
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self.supportCompactZero and 'no ' or ''
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))
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# de-facto way to encode zero
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if self.supportCompactZero:
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return (), False, False
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else:
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return (0,), False, False
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return to_bytes(int(value), signed=True), False, True
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class BitStringEncoder(AbstractItemEncoder):
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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if asn1Spec is not None:
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# TODO: try to avoid ASN.1 schema instantiation
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value = asn1Spec.clone(value)
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valueLength = len(value)
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if valueLength % 8:
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alignedValue = value << (8 - valueLength % 8)
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else:
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alignedValue = value
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maxChunkSize = options.get('maxChunkSize', 0)
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if not maxChunkSize or len(alignedValue) <= maxChunkSize * 8:
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substrate = alignedValue.asOctets()
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return int2oct(len(substrate) * 8 - valueLength) + substrate, False, True
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if LOG:
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LOG('encoding into up to %s-octet chunks' % maxChunkSize)
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baseTag = value.tagSet.baseTag
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# strip off explicit tags
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if baseTag:
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tagSet = tag.TagSet(baseTag, baseTag)
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else:
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tagSet = tag.TagSet()
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alignedValue = alignedValue.clone(tagSet=tagSet)
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stop = 0
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substrate = null
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while stop < valueLength:
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start = stop
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stop = min(start + maxChunkSize * 8, valueLength)
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substrate += encodeFun(alignedValue[start:stop], asn1Spec, **options)
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return substrate, True, True
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class OctetStringEncoder(AbstractItemEncoder):
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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if asn1Spec is None:
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substrate = value.asOctets()
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elif not isOctetsType(value):
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substrate = asn1Spec.clone(value).asOctets()
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else:
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substrate = value
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maxChunkSize = options.get('maxChunkSize', 0)
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if not maxChunkSize or len(substrate) <= maxChunkSize:
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return substrate, False, True
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if LOG:
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LOG('encoding into up to %s-octet chunks' % maxChunkSize)
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# strip off explicit tags for inner chunks
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if asn1Spec is None:
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baseTag = value.tagSet.baseTag
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# strip off explicit tags
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if baseTag:
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tagSet = tag.TagSet(baseTag, baseTag)
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else:
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tagSet = tag.TagSet()
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asn1Spec = value.clone(tagSet=tagSet)
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elif not isOctetsType(value):
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baseTag = asn1Spec.tagSet.baseTag
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# strip off explicit tags
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if baseTag:
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tagSet = tag.TagSet(baseTag, baseTag)
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else:
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tagSet = tag.TagSet()
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asn1Spec = asn1Spec.clone(tagSet=tagSet)
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pos = 0
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substrate = null
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while True:
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chunk = value[pos:pos + maxChunkSize]
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if not chunk:
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break
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substrate += encodeFun(chunk, asn1Spec, **options)
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pos += maxChunkSize
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return substrate, True, True
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class NullEncoder(AbstractItemEncoder):
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supportIndefLenMode = False
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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return null, False, True
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class ObjectIdentifierEncoder(AbstractItemEncoder):
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supportIndefLenMode = False
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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if asn1Spec is not None:
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value = asn1Spec.clone(value)
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oid = value.asTuple()
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# Build the first pair
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try:
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first = oid[0]
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second = oid[1]
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except IndexError:
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raise error.PyAsn1Error('Short OID %s' % (value,))
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if 0 <= second <= 39:
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if first == 1:
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oid = (second + 40,) + oid[2:]
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elif first == 0:
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oid = (second,) + oid[2:]
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elif first == 2:
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oid = (second + 80,) + oid[2:]
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else:
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raise error.PyAsn1Error('Impossible first/second arcs at %s' % (value,))
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elif first == 2:
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oid = (second + 80,) + oid[2:]
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else:
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raise error.PyAsn1Error('Impossible first/second arcs at %s' % (value,))
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octets = ()
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# Cycle through subIds
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for subOid in oid:
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if 0 <= subOid <= 127:
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# Optimize for the common case
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octets += (subOid,)
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elif subOid > 127:
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# Pack large Sub-Object IDs
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res = (subOid & 0x7f,)
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subOid >>= 7
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while subOid:
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res = (0x80 | (subOid & 0x7f),) + res
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subOid >>= 7
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# Add packed Sub-Object ID to resulted Object ID
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octets += res
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else:
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raise error.PyAsn1Error('Negative OID arc %s at %s' % (subOid, value))
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return octets, False, False
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class RealEncoder(AbstractItemEncoder):
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supportIndefLenMode = 0
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binEncBase = 2 # set to None to choose encoding base automatically
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@staticmethod
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def _dropFloatingPoint(m, encbase, e):
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ms, es = 1, 1
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if m < 0:
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ms = -1 # mantissa sign
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if e < 0:
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es = -1 # exponent sign
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m *= ms
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if encbase == 8:
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m *= 2 ** (abs(e) % 3 * es)
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e = abs(e) // 3 * es
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elif encbase == 16:
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m *= 2 ** (abs(e) % 4 * es)
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e = abs(e) // 4 * es
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while True:
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if int(m) != m:
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m *= encbase
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e -= 1
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continue
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break
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return ms, int(m), encbase, e
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def _chooseEncBase(self, value):
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m, b, e = value
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encBase = [2, 8, 16]
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if value.binEncBase in encBase:
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return self._dropFloatingPoint(m, value.binEncBase, e)
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elif self.binEncBase in encBase:
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return self._dropFloatingPoint(m, self.binEncBase, e)
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# auto choosing base 2/8/16
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mantissa = [m, m, m]
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exponent = [e, e, e]
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sign = 1
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encbase = 2
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e = float('inf')
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for i in range(3):
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(sign,
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mantissa[i],
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encBase[i],
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exponent[i]) = self._dropFloatingPoint(mantissa[i], encBase[i], exponent[i])
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if abs(exponent[i]) < abs(e) or (abs(exponent[i]) == abs(e) and mantissa[i] < m):
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e = exponent[i]
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m = int(mantissa[i])
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encbase = encBase[i]
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if LOG:
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LOG('automatically chosen REAL encoding base %s, sign %s, mantissa %s, '
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'exponent %s' % (encbase, sign, m, e))
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return sign, m, encbase, e
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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if asn1Spec is not None:
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value = asn1Spec.clone(value)
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if value.isPlusInf:
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return (0x40,), False, False
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if value.isMinusInf:
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return (0x41,), False, False
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m, b, e = value
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if not m:
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return null, False, True
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if b == 10:
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if LOG:
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LOG('encoding REAL into character form')
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return str2octs('\x03%dE%s%d' % (m, e == 0 and '+' or '', e)), False, True
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elif b == 2:
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fo = 0x80 # binary encoding
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ms, m, encbase, e = self._chooseEncBase(value)
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if ms < 0: # mantissa sign
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fo |= 0x40 # sign bit
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# exponent & mantissa normalization
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if encbase == 2:
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while m & 0x1 == 0:
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m >>= 1
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e += 1
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elif encbase == 8:
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while m & 0x7 == 0:
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m >>= 3
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e += 1
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fo |= 0x10
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else: # encbase = 16
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while m & 0xf == 0:
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m >>= 4
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e += 1
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fo |= 0x20
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sf = 0 # scale factor
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while m & 0x1 == 0:
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m >>= 1
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sf += 1
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if sf > 3:
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raise error.PyAsn1Error('Scale factor overflow') # bug if raised
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fo |= sf << 2
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eo = null
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if e == 0 or e == -1:
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eo = int2oct(e & 0xff)
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else:
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while e not in (0, -1):
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eo = int2oct(e & 0xff) + eo
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e >>= 8
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if e == 0 and eo and oct2int(eo[0]) & 0x80:
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eo = int2oct(0) + eo
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if e == -1 and eo and not (oct2int(eo[0]) & 0x80):
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eo = int2oct(0xff) + eo
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n = len(eo)
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if n > 0xff:
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raise error.PyAsn1Error('Real exponent overflow')
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if n == 1:
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pass
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elif n == 2:
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fo |= 1
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elif n == 3:
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fo |= 2
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else:
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fo |= 3
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eo = int2oct(n & 0xff) + eo
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po = null
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while m:
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po = int2oct(m & 0xff) + po
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m >>= 8
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substrate = int2oct(fo) + eo + po
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return substrate, False, True
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else:
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raise error.PyAsn1Error('Prohibited Real base %s' % b)
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class SequenceEncoder(AbstractItemEncoder):
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omitEmptyOptionals = False
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# TODO: handling three flavors of input is too much -- split over codecs
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def encodeValue(self, value, asn1Spec, encodeFun, **options):
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substrate = null
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if asn1Spec is None:
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# instance of ASN.1 schema
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value.verifySizeSpec()
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namedTypes = value.componentType
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for idx, component in enumerate(value.values()):
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if namedTypes:
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namedType = namedTypes[idx]
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if namedType.isOptional and not component.isValue:
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if LOG:
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LOG('not encoding OPTIONAL component %r' % (namedType,))
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continue
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if namedType.isDefaulted and component == namedType.asn1Object:
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if LOG:
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LOG('not encoding DEFAULT component %r' % (namedType,))
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continue
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if self.omitEmptyOptionals:
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options.update(ifNotEmpty=namedType.isOptional)
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chunk = encodeFun(component, asn1Spec, **options)
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# wrap open type blob if needed
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if namedTypes and namedType.openType:
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wrapType = namedType.asn1Object
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if wrapType.tagSet and not wrapType.isSameTypeWith(component):
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chunk = encodeFun(chunk, wrapType, **options)
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if LOG:
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LOG('wrapped open type with wrap type %r' % (wrapType,))
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substrate += chunk
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else:
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# bare Python value + ASN.1 schema
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for idx, namedType in enumerate(asn1Spec.componentType.namedTypes):
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try:
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component = value[namedType.name]
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except KeyError:
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raise error.PyAsn1Error('Component name "%s" not found in %r' % (
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namedType.name, value))
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|
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if namedType.isOptional and namedType.name not in value:
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if LOG:
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LOG('not encoding OPTIONAL component %r' % (namedType,))
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continue
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|
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if namedType.isDefaulted and component == namedType.asn1Object:
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if LOG:
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LOG('not encoding DEFAULT component %r' % (namedType,))
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continue
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|
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if self.omitEmptyOptionals:
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options.update(ifNotEmpty=namedType.isOptional)
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chunk = encodeFun(component, asn1Spec[idx], **options)
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|
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# wrap open type blob if needed
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if namedType.openType:
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wrapType = namedType.asn1Object
|
|
if wrapType.tagSet and not wrapType.isSameTypeWith(component):
|
|
chunk = encodeFun(chunk, wrapType, **options)
|
|
|
|
if LOG:
|
|
LOG('wrapped open type with wrap type %r' % (wrapType,))
|
|
|
|
substrate += chunk
|
|
|
|
return substrate, True, True
|
|
|
|
|
|
class SequenceOfEncoder(AbstractItemEncoder):
|
|
def encodeValue(self, value, asn1Spec, encodeFun, **options):
|
|
if asn1Spec is None:
|
|
value.verifySizeSpec()
|
|
else:
|
|
asn1Spec = asn1Spec.componentType
|
|
|
|
substrate = null
|
|
|
|
for idx, component in enumerate(value):
|
|
substrate += encodeFun(value[idx], asn1Spec, **options)
|
|
|
|
return substrate, True, True
|
|
|
|
|
|
class ChoiceEncoder(AbstractItemEncoder):
|
|
def encodeValue(self, value, asn1Spec, encodeFun, **options):
|
|
if asn1Spec is None:
|
|
component = value.getComponent()
|
|
else:
|
|
names = [namedType.name for namedType in asn1Spec.componentType.namedTypes
|
|
if namedType.name in value]
|
|
if len(names) != 1:
|
|
raise error.PyAsn1Error('%s components for Choice at %r' % (len(names) and 'Multiple ' or 'None ', value))
|
|
|
|
name = names[0]
|
|
|
|
component = value[name]
|
|
asn1Spec = asn1Spec[name]
|
|
|
|
return encodeFun(component, asn1Spec, **options), True, True
|
|
|
|
|
|
class AnyEncoder(OctetStringEncoder):
|
|
def encodeValue(self, value, asn1Spec, encodeFun, **options):
|
|
if asn1Spec is None:
|
|
value = value.asOctets()
|
|
elif not isOctetsType(value):
|
|
value = asn1Spec.clone(value).asOctets()
|
|
|
|
return value, not options.get('defMode', True), True
|
|
|
|
|
|
tagMap = {
|
|
eoo.endOfOctets.tagSet: EndOfOctetsEncoder(),
|
|
univ.Boolean.tagSet: BooleanEncoder(),
|
|
univ.Integer.tagSet: IntegerEncoder(),
|
|
univ.BitString.tagSet: BitStringEncoder(),
|
|
univ.OctetString.tagSet: OctetStringEncoder(),
|
|
univ.Null.tagSet: NullEncoder(),
|
|
univ.ObjectIdentifier.tagSet: ObjectIdentifierEncoder(),
|
|
univ.Enumerated.tagSet: IntegerEncoder(),
|
|
univ.Real.tagSet: RealEncoder(),
|
|
# Sequence & Set have same tags as SequenceOf & SetOf
|
|
univ.SequenceOf.tagSet: SequenceOfEncoder(),
|
|
univ.SetOf.tagSet: SequenceOfEncoder(),
|
|
univ.Choice.tagSet: ChoiceEncoder(),
|
|
# character string types
|
|
char.UTF8String.tagSet: OctetStringEncoder(),
|
|
char.NumericString.tagSet: OctetStringEncoder(),
|
|
char.PrintableString.tagSet: OctetStringEncoder(),
|
|
char.TeletexString.tagSet: OctetStringEncoder(),
|
|
char.VideotexString.tagSet: OctetStringEncoder(),
|
|
char.IA5String.tagSet: OctetStringEncoder(),
|
|
char.GraphicString.tagSet: OctetStringEncoder(),
|
|
char.VisibleString.tagSet: OctetStringEncoder(),
|
|
char.GeneralString.tagSet: OctetStringEncoder(),
|
|
char.UniversalString.tagSet: OctetStringEncoder(),
|
|
char.BMPString.tagSet: OctetStringEncoder(),
|
|
# useful types
|
|
useful.ObjectDescriptor.tagSet: OctetStringEncoder(),
|
|
useful.GeneralizedTime.tagSet: OctetStringEncoder(),
|
|
useful.UTCTime.tagSet: OctetStringEncoder()
|
|
}
|
|
|
|
# Put in ambiguous & non-ambiguous types for faster codec lookup
|
|
typeMap = {
|
|
univ.Boolean.typeId: BooleanEncoder(),
|
|
univ.Integer.typeId: IntegerEncoder(),
|
|
univ.BitString.typeId: BitStringEncoder(),
|
|
univ.OctetString.typeId: OctetStringEncoder(),
|
|
univ.Null.typeId: NullEncoder(),
|
|
univ.ObjectIdentifier.typeId: ObjectIdentifierEncoder(),
|
|
univ.Enumerated.typeId: IntegerEncoder(),
|
|
univ.Real.typeId: RealEncoder(),
|
|
# Sequence & Set have same tags as SequenceOf & SetOf
|
|
univ.Set.typeId: SequenceEncoder(),
|
|
univ.SetOf.typeId: SequenceOfEncoder(),
|
|
univ.Sequence.typeId: SequenceEncoder(),
|
|
univ.SequenceOf.typeId: SequenceOfEncoder(),
|
|
univ.Choice.typeId: ChoiceEncoder(),
|
|
univ.Any.typeId: AnyEncoder(),
|
|
# character string types
|
|
char.UTF8String.typeId: OctetStringEncoder(),
|
|
char.NumericString.typeId: OctetStringEncoder(),
|
|
char.PrintableString.typeId: OctetStringEncoder(),
|
|
char.TeletexString.typeId: OctetStringEncoder(),
|
|
char.VideotexString.typeId: OctetStringEncoder(),
|
|
char.IA5String.typeId: OctetStringEncoder(),
|
|
char.GraphicString.typeId: OctetStringEncoder(),
|
|
char.VisibleString.typeId: OctetStringEncoder(),
|
|
char.GeneralString.typeId: OctetStringEncoder(),
|
|
char.UniversalString.typeId: OctetStringEncoder(),
|
|
char.BMPString.typeId: OctetStringEncoder(),
|
|
# useful types
|
|
useful.ObjectDescriptor.typeId: OctetStringEncoder(),
|
|
useful.GeneralizedTime.typeId: OctetStringEncoder(),
|
|
useful.UTCTime.typeId: OctetStringEncoder()
|
|
}
|
|
|
|
|
|
class Encoder(object):
|
|
fixedDefLengthMode = None
|
|
fixedChunkSize = None
|
|
|
|
# noinspection PyDefaultArgument
|
|
def __init__(self, tagMap, typeMap={}):
|
|
self.__tagMap = tagMap
|
|
self.__typeMap = typeMap
|
|
|
|
def __call__(self, value, asn1Spec=None, **options):
|
|
try:
|
|
if asn1Spec is None:
|
|
typeId = value.typeId
|
|
else:
|
|
typeId = asn1Spec.typeId
|
|
|
|
except AttributeError:
|
|
raise error.PyAsn1Error('Value %r is not ASN.1 type instance '
|
|
'and "asn1Spec" not given' % (value,))
|
|
|
|
if LOG:
|
|
LOG('encoder called in %sdef mode, chunk size %s for '
|
|
'type %s, value:\n%s' % (not options.get('defMode', True) and 'in' or '', options.get('maxChunkSize', 0), asn1Spec is None and value.prettyPrintType() or asn1Spec.prettyPrintType(), value))
|
|
|
|
if self.fixedDefLengthMode is not None:
|
|
options.update(defMode=self.fixedDefLengthMode)
|
|
|
|
if self.fixedChunkSize is not None:
|
|
options.update(maxChunkSize=self.fixedChunkSize)
|
|
|
|
|
|
try:
|
|
concreteEncoder = self.__typeMap[typeId]
|
|
|
|
if LOG:
|
|
LOG('using value codec %s chosen by type ID %s' % (concreteEncoder.__class__.__name__, typeId))
|
|
|
|
except KeyError:
|
|
if asn1Spec is None:
|
|
tagSet = value.tagSet
|
|
else:
|
|
tagSet = asn1Spec.tagSet
|
|
|
|
# use base type for codec lookup to recover untagged types
|
|
baseTagSet = tag.TagSet(tagSet.baseTag, tagSet.baseTag)
|
|
|
|
try:
|
|
concreteEncoder = self.__tagMap[baseTagSet]
|
|
|
|
except KeyError:
|
|
raise error.PyAsn1Error('No encoder for %r (%s)' % (value, tagSet))
|
|
|
|
if LOG:
|
|
LOG('using value codec %s chosen by tagSet %s' % (concreteEncoder.__class__.__name__, tagSet))
|
|
|
|
substrate = concreteEncoder.encode(value, asn1Spec, self, **options)
|
|
|
|
if LOG:
|
|
LOG('codec %s built %s octets of substrate: %s\nencoder completed' % (concreteEncoder, len(substrate), debug.hexdump(substrate)))
|
|
|
|
return substrate
|
|
|
|
#: Turns ASN.1 object into BER octet stream.
|
|
#:
|
|
#: Takes any ASN.1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative)
|
|
#: walks all its components recursively and produces a BER octet stream.
|
|
#:
|
|
#: Parameters
|
|
#: ----------
|
|
#: value: either a Python or pyasn1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative)
|
|
#: A Python or pyasn1 object to encode. If Python object is given, `asnSpec`
|
|
#: parameter is required to guide the encoding process.
|
|
#:
|
|
#: Keyword Args
|
|
#: ------------
|
|
#: asn1Spec:
|
|
#: Optional ASN.1 schema or value object e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative
|
|
#:
|
|
#: defMode: :py:class:`bool`
|
|
#: If `False`, produces indefinite length encoding
|
|
#:
|
|
#: maxChunkSize: :py:class:`int`
|
|
#: Maximum chunk size in chunked encoding mode (0 denotes unlimited chunk size)
|
|
#:
|
|
#: Returns
|
|
#: -------
|
|
#: : :py:class:`bytes` (Python 3) or :py:class:`str` (Python 2)
|
|
#: Given ASN.1 object encoded into BER octetstream
|
|
#:
|
|
#: Raises
|
|
#: ------
|
|
#: :py:class:`~pyasn1.error.PyAsn1Error`
|
|
#: On encoding errors
|
|
#:
|
|
#: Examples
|
|
#: --------
|
|
#: Encode Python value into BER with ASN.1 schema
|
|
#:
|
|
#: .. code-block:: pycon
|
|
#:
|
|
#: >>> seq = SequenceOf(componentType=Integer())
|
|
#: >>> encode([1, 2, 3], asn1Spec=seq)
|
|
#: b'0\t\x02\x01\x01\x02\x01\x02\x02\x01\x03'
|
|
#:
|
|
#: Encode ASN.1 value object into BER
|
|
#:
|
|
#: .. code-block:: pycon
|
|
#:
|
|
#: >>> seq = SequenceOf(componentType=Integer())
|
|
#: >>> seq.extend([1, 2, 3])
|
|
#: >>> encode(seq)
|
|
#: b'0\t\x02\x01\x01\x02\x01\x02\x02\x01\x03'
|
|
#:
|
|
encode = Encoder(tagMap, typeMap)
|