mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-11 08:55:23 +03:00
81 lines
2.5 KiB
Plaintext
81 lines
2.5 KiB
Plaintext
:: |asn1: small selection of types and constants for ASN.1
|
|
::
|
|
:: A minimal representation of some basic ASN.1 types,
|
|
:: created to support PKCS keys, digests, and cert requests.
|
|
::
|
|
^?
|
|
|%
|
|
:: +bespoke:asn1: context-specific, generic ASN.1 tag type
|
|
::
|
|
:: Note that *explicit* implies *constructed* (ie, bit 5 is set in DER).
|
|
::
|
|
+= bespoke
|
|
:: imp: & is implicit, | is explicit
|
|
:: tag: 5 bits for the custom tag number
|
|
::
|
|
[imp=? tag=@ud]
|
|
:: +spec:asn1: minimal representations of basic ASN.1 types
|
|
::
|
|
+= spec
|
|
$% :: %int: arbitrary-sized, unsigned integers
|
|
::
|
|
:: Unsigned integers, represented as having a positive sign.
|
|
:: Negative integers would be two's complement in DER,
|
|
:: but we don't need them.
|
|
::
|
|
[%int int=@u]
|
|
:: %bit: very minimal support for bit strings
|
|
::
|
|
:: Specifically, values must already be padded and byte-aligned.
|
|
:: len: bitwidth
|
|
:: bit: data
|
|
::
|
|
[%bit len=@ud bit=@ux]
|
|
:: %oct: octets in little-endian byte order
|
|
::
|
|
:: len: bytewidth
|
|
:: bit: data
|
|
::
|
|
[%oct len=@ud oct=@ux]
|
|
:: %nul: fully supported!
|
|
::
|
|
[%nul ~]
|
|
:: %obj: object identifiers, pre-packed
|
|
::
|
|
:: Object identifiers are technically a sequence of integers,
|
|
:: represented here in their already-encoded form.
|
|
::
|
|
[%obj obj=@ux]
|
|
:: %seq: a list of specs
|
|
::
|
|
[%seq seq=(list spec)]
|
|
:: %set: a logical set of specs
|
|
::
|
|
:: Implemented here as a list for the sake of simplicity.
|
|
:: must be already deduplicated and sorted!
|
|
::
|
|
[%set set=(list spec)]
|
|
:: %con: context-specific
|
|
::
|
|
:: General support for context-specific tags.
|
|
:: bes: custom tag number, implicit or explicit
|
|
:: con: already-encoded bytes
|
|
::
|
|
[%con bes=bespoke con=(list @D)]
|
|
==
|
|
:: |obj:asn1: constant object ids, pre-encoded
|
|
::
|
|
++ obj
|
|
^?
|
|
|% :: rfc4055
|
|
++ sha-256 0x1.0204.0365.0148.8660 :: 2.16.840.1.101.3.4.2.1
|
|
++ rsa 0x1.0101.0df7.8648.862a :: 1.2.840.113549.1.1.1
|
|
++ rsa-sha-256 0xb.0101.0df7.8648.862a :: 1.2.840.113549.1.1.11
|
|
:: rfc2985
|
|
++ csr-ext 0xe.0901.0df7.8648.862a :: 1.2.840.113549.1.9.14
|
|
:: rfc3280
|
|
++ sub-alt 0x11.1d55 :: 2.5.29.17
|
|
--
|
|
--
|
|
|