Wireshark · Display Filter Reference: Packed Encoding Rules (ASN.1 X.691)

Field name	Description	Type	Versions
per._const_int_len	Constrained Integer Length	Unsigned integer (32 bits)	1.0.0 to 1.8.2
per.arbitrary	arbitrary	Byte sequence	1.0.0 to 4.4.2
per.bit_string_length	Bit String Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.choice_extension_index	Choice Extension Index	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.choice_extension_unknown	unknown choice extension	Label	1.12.0 to 4.4.2
per.choice_index	Choice Index	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.const_int_len	Constrained Integer Length	Unsigned integer (32 bits)	1.8.3 to 4.4.2
per.data_value_descriptor	data-value-descriptor	Character string	1.0.0 to 4.4.2
per.debug_pos	Current bit offset	Unsigned integer (32 bits)	1.6.0 to 1.8.15
per.direct_reference	direct-reference	ASN.1 object identifier	1.0.0 to 4.4.2
per.dissect_per_constrained_sequence_of	dissect_per_constrained_sequence_of with extension is not handled	Label	2.0.0 to 3.4.16
per.encoding	encoding	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.encoding_boiler_plate	PER encoded protocol, to see PER internal fields set protocol PER preferences	Label	4.0.0 to 4.4.2
per.encoding_error	Encoding error	Label	1.12.0 to 4.4.2
per.enum_extension_index	Enumerated Extension Index	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.enum_index	Enumerated Index	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.error.oid_not_implemented	PER: Dissector for OID not implemented. Contact Wireshark developers if you want this supported	Label	2.0.0 to 4.4.2
per.error.undecoded	PER: Something unknown here	Label	2.0.0 to 4.4.2
per.extension_bit	Extension Bit	Boolean	1.0.0 to 4.4.2
per.extension_present_bit	Extension Present Bit	Boolean	1.0.0 to 4.4.2
per.external_type.unknown	Unknown EXTERNAL Type	Label	2.0.0 to 4.4.2
per.field_not_integer	Field is not an integer	Label	2.0.0 to 4.4.2
per.generalstring_length	GeneralString Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.indirect_reference	indirect-reference	Signed integer (32 bits)	1.0.0 to 4.4.2
per.integer_length	integer length	Unsigned integer (32 bits)	1.2.0 to 4.4.2
per.internal.min	Min	Unsigned integer (32 bits)	2.0.0 to 4.4.2
per.internal.min_int	Min	Signed integer (32 bits)	4.2.5 to 4.4.2
per.internal.num_bits	Bitfield length	Unsigned integer (32 bits)	2.0.0 to 4.4.2
per.internal.range	Range	Unsigned integer (64 bits)	2.0.0 to 4.4.2
per.internal.value	Bits	Unsigned integer (64 bits)	2.0.0 to 4.4.2
per.internal.value_int	Bits	Signed integer (64 bits)	4.2.5 to 4.4.2
per.normally_small_nonnegative_whole_number_length	Normally Small Non-negative Whole Number Length	Unsigned integer (32 bits)	1.8.10 to 1.8.15, 1.10.2 to 4.4.2
per.num_sequence_extensions	Number of Sequence Extensions	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.object_length	Object Identifier Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.octet_aligned	octet-aligned	Byte sequence	1.0.0 to 4.4.2
per.octet_string_length	Octet String Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.open_type.len	Open Type length > available data(tvb)	Label	3.6.0 to 4.4.2
per.open_type.unknown	Unknown Open Type	Label	2.0.0 to 4.4.2
per.open_type_length	Open Type Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.optional_field_bit	Optional Field Bit	Boolean	1.0.0 to 4.4.2
per.real_length	Real Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.sequence_extension_unknown	unknown sequence extension	Label	1.12.0 to 4.4.2
per.sequence_of_length	Sequence-Of Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
per.single_ASN1_type	single-ASN1-type	Label	1.0.0 to 4.4.2
per.size_constraint.too_few	Size constraint: too few items	Label	1.12.0 to 4.4.2
per.size_constraint.too_many	Size constraint: too many items	Label	1.12.0 to 4.4.2
per.size_constraint.value	Size constraint: value too big	Label	1.12.0 to 4.4.2
per.small_number_bit	Small Number Bit	Boolean	1.0.0 to 4.4.2