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src/CMS-AES-CCM-and-AES-GCM-2009.erl
%% Generated by the Erlang ASN.1 BER compiler. Version: 5.0.21
%% Purpose: Encoding and decoding of the types in CMS-AES-CCM-and-AES-GCM-2009.
-module('CMS-AES-CCM-and-AES-GCM-2009').
-compile(nowarn_unused_vars).
-dialyzer(no_improper_lists).
-dialyzer(no_match).
-include("CMS-AES-CCM-and-AES-GCM-2009.hrl").
-asn1_info([{vsn,'5.0.21'},
{module,'CMS-AES-CCM-and-AES-GCM-2009'},
{options,[warnings,ber,errors,
{cwd,"/Users/maxim/depot/synrc/ca/priv/cms"},
{outdir,"/Users/maxim/depot/synrc/ca/priv/cms"},
{i,"."},
{i,"/Users/maxim/depot/synrc/ca/priv/cms"}]}]).
-export([encoding_rule/0,maps/0,bit_string_format/0,
legacy_erlang_types/0]).
-export(['dialyzer-suppressions'/1]).
-export([
enc_CCMParameters/2,
'enc_AES-CCM-ICVlen'/2,
enc_GCMParameters/2,
'enc_AES-GCM-ICVlen'/2
]).
-export([
dec_CCMParameters/2,
'dec_AES-CCM-ICVlen'/2,
dec_GCMParameters/2,
'dec_AES-GCM-ICVlen'/2
]).
-export([
'enc_cea-aes128-CCM'/3,
'enc_cea-aes192-CCM'/3,
'enc_cea-aes256-CCM'/3,
'enc_cea-aes128-GCM'/3,
'enc_cea-aes192-GCM'/3,
'enc_cea-aes256-GCM'/3,
'enc_cea-aes256-GCM_smimeCaps'/3,
'enc_cea-aes192-GCM_smimeCaps'/3,
'enc_cea-aes128-GCM_smimeCaps'/3,
'enc_cea-aes256-CCM_smimeCaps'/3,
'enc_cea-aes192-CCM_smimeCaps'/3,
'enc_cea-aes128-CCM_smimeCaps'/3
]).
-export([
'dec_cea-aes128-CCM'/3,
'dec_cea-aes192-CCM'/3,
'dec_cea-aes256-CCM'/3,
'dec_cea-aes128-GCM'/3,
'dec_cea-aes192-GCM'/3,
'dec_cea-aes256-GCM'/3,
'dec_cea-aes256-GCM_smimeCaps'/3,
'dec_cea-aes192-GCM_smimeCaps'/3,
'dec_cea-aes128-GCM_smimeCaps'/3,
'dec_cea-aes256-CCM_smimeCaps'/3,
'dec_cea-aes192-CCM_smimeCaps'/3,
'dec_cea-aes128-CCM_smimeCaps'/3
]).
-export([
getenc_SMimeCaps/1
]).
-export([
getdec_SMimeCaps/1
]).
-export([
aes/0,
'id-aes128-CCM'/0,
'id-aes192-CCM'/0,
'id-aes256-CCM'/0,
'id-aes128-GCM'/0,
'id-aes192-GCM'/0,
'id-aes256-GCM'/0
]).
-export([info/0]).
-export([encode/2,decode/2]).
encoding_rule() -> ber.
maps() -> false.
bit_string_format() -> bitstring.
legacy_erlang_types() -> false.
encode(Type, Data) ->
try iolist_to_binary(element(1, encode_disp(Type, Data))) of
Bytes ->
{ok,Bytes}
catch
Class:Exception:Stk when Class =:= error; Class =:= exit ->
case Exception of
{error,{asn1,Reason}} ->
{error,{asn1,{Reason,Stk}}};
Reason ->
{error,{asn1,{Reason,Stk}}}
end
end.
decode(Type, Data) ->
try
Result = decode_disp(Type, element(1, ber_decode_nif(Data))),
{ok,Result}
catch
Class:Exception:Stk when Class =:= error; Class =:= exit ->
case Exception of
{error,{asn1,Reason}} ->
{error,{asn1,{Reason,Stk}}};
Reason ->
{error,{asn1,{Reason,Stk}}}
end
end.
encode_disp('CCMParameters', Data) -> enc_CCMParameters(Data);
encode_disp('AES-CCM-ICVlen', Data) -> 'enc_AES-CCM-ICVlen'(Data);
encode_disp('GCMParameters', Data) -> enc_GCMParameters(Data);
encode_disp('AES-GCM-ICVlen', Data) -> 'enc_AES-GCM-ICVlen'(Data);
encode_disp(Type, _Data) -> exit({error,{asn1,{undefined_type,Type}}}).
decode_disp('CCMParameters', Data) -> dec_CCMParameters(Data);
decode_disp('AES-CCM-ICVlen', Data) -> 'dec_AES-CCM-ICVlen'(Data);
decode_disp('GCMParameters', Data) -> dec_GCMParameters(Data);
decode_disp('AES-GCM-ICVlen', Data) -> 'dec_AES-GCM-ICVlen'(Data);
decode_disp(Type, _Data) -> exit({error,{asn1,{undefined_type,Type}}}).
info() ->
case ?MODULE:module_info(attributes) of
Attributes when is_list(Attributes) ->
case lists:keyfind(asn1_info, 1, Attributes) of
{_,Info} when is_list(Info) ->
Info;
_ ->
[]
end;
_ ->
[]
end.
%%================================
%% CCMParameters
%%================================
enc_CCMParameters(Val) ->
enc_CCMParameters(Val, [<<48>>]).
enc_CCMParameters(Val, TagIn) ->
{_,Cindex1,Cindex2} = Val,
%%-------------------------------------------------
%% attribute aes-nonce(1) with type OCTET STRING
%%-------------------------------------------------
{EncBytes1,EncLen1} = encode_restricted_string(Cindex1, [<<4>>]),
%%-------------------------------------------------
%% attribute aes-ICVlen(2) with type INTEGER DEFAULT = 12
%%-------------------------------------------------
{EncBytes2,EncLen2} = case Cindex2 of
asn1_DEFAULT ->
{<<>>,0};
_ when Cindex2 =:= 12 ->
{<<>>,0};
_ ->
encode_integer(Cindex2, [<<2>>])
end,
BytesSoFar = [EncBytes1, EncBytes2],
LenSoFar = EncLen1 + EncLen2,
encode_tags(TagIn, BytesSoFar, LenSoFar).
dec_CCMParameters(Tlv) ->
dec_CCMParameters(Tlv, [16]).
dec_CCMParameters(Tlv, TagIn) ->
%%-------------------------------------------------
%% decode tag and length
%%-------------------------------------------------
Tlv1 = match_tags(Tlv, TagIn),
%%-------------------------------------------------
%% attribute aes-nonce(1) with type OCTET STRING
%%-------------------------------------------------
[V1|Tlv2] = Tlv1,
Term1 = begin
Val1 = decode_octet_string(V1, [4]),
C1 = byte_size(Val1),
if 7 =< C1, C1 =< 13 ->
Val1;
true ->
exit({error,{asn1,bad_range}})
end
end,
%%-------------------------------------------------
%% attribute aes-ICVlen(2) with type INTEGER DEFAULT = 12
%%-------------------------------------------------
{Term2,Tlv3} = case Tlv2 of
[{2,V2}|TempTlv3] ->
{begin
Val2 = decode_integer(V2, []),
if 4 =< Val2, Val2 =< 16 ->
Val2;
true ->
exit({error,{asn1,bad_range}})
end
end, TempTlv3};
_ ->
{12,Tlv2}
end,
case Tlv3 of
[] -> true;_ -> exit({error,{asn1, {unexpected,Tlv3}}}) % extra fields not allowed
end,
Res1 = {'CCMParameters',Term1,Term2},
Res1.
%%================================
%% AES-CCM-ICVlen
%%================================
'enc_AES-CCM-ICVlen'(Val) ->
'enc_AES-CCM-ICVlen'(Val, [<<2>>]).
'enc_AES-CCM-ICVlen'(Val, TagIn) ->
encode_integer(Val, TagIn).
'dec_AES-CCM-ICVlen'(Tlv) ->
'dec_AES-CCM-ICVlen'(Tlv, [2]).
'dec_AES-CCM-ICVlen'(Tlv, TagIn) ->
begin
Val1 = decode_integer(Tlv, TagIn),
if 4 =< Val1, Val1 =< 16 ->
Val1;
true ->
exit({error,{asn1,bad_range}})
end
end.
%%================================
%% GCMParameters
%%================================
enc_GCMParameters(Val) ->
enc_GCMParameters(Val, [<<48>>]).
enc_GCMParameters(Val, TagIn) ->
{_,Cindex1,Cindex2} = Val,
%%-------------------------------------------------
%% attribute aes-nonce(1) with type OCTET STRING
%%-------------------------------------------------
{EncBytes1,EncLen1} = encode_restricted_string(Cindex1, [<<4>>]),
%%-------------------------------------------------
%% attribute aes-ICVlen(2) with type INTEGER DEFAULT = 12
%%-------------------------------------------------
{EncBytes2,EncLen2} = case Cindex2 of
asn1_DEFAULT ->
{<<>>,0};
_ when Cindex2 =:= 12 ->
{<<>>,0};
_ ->
encode_integer(Cindex2, [<<2>>])
end,
BytesSoFar = [EncBytes1, EncBytes2],
LenSoFar = EncLen1 + EncLen2,
encode_tags(TagIn, BytesSoFar, LenSoFar).
dec_GCMParameters(Tlv) ->
dec_GCMParameters(Tlv, [16]).
dec_GCMParameters(Tlv, TagIn) ->
%%-------------------------------------------------
%% decode tag and length
%%-------------------------------------------------
Tlv1 = match_tags(Tlv, TagIn),
%%-------------------------------------------------
%% attribute aes-nonce(1) with type OCTET STRING
%%-------------------------------------------------
[V1|Tlv2] = Tlv1,
Term1 = decode_octet_string(V1, [4]),
%%-------------------------------------------------
%% attribute aes-ICVlen(2) with type INTEGER DEFAULT = 12
%%-------------------------------------------------
{Term2,Tlv3} = case Tlv2 of
[{2,V2}|TempTlv3] ->
{begin
Val1 = decode_integer(V2, []),
if 12 =< Val1, Val1 =< 16 ->
Val1;
true ->
exit({error,{asn1,bad_range}})
end
end, TempTlv3};
_ ->
{12,Tlv2}
end,
case Tlv3 of
[] -> true;_ -> exit({error,{asn1, {unexpected,Tlv3}}}) % extra fields not allowed
end,
Res1 = {'GCMParameters',Term1,Term2},
Res1.
%%================================
%% AES-GCM-ICVlen
%%================================
'enc_AES-GCM-ICVlen'(Val) ->
'enc_AES-GCM-ICVlen'(Val, [<<2>>]).
'enc_AES-GCM-ICVlen'(Val, TagIn) ->
encode_integer(Val, TagIn).
'dec_AES-GCM-ICVlen'(Tlv) ->
'dec_AES-GCM-ICVlen'(Tlv, [2]).
'dec_AES-GCM-ICVlen'(Tlv, TagIn) ->
begin
Val1 = decode_integer(Tlv, TagIn),
if 12 =< Val1, Val1 =< 16 ->
Val1;
true ->
exit({error,{asn1,bad_range}})
end
end.
aes() ->
{2,16,840,1,101,3,4,1}.
'id-aes128-CCM'() ->
{2,16,840,1,101,3,4,1,7}.
'id-aes192-CCM'() ->
{2,16,840,1,101,3,4,1,27}.
'id-aes256-CCM'() ->
{2,16,840,1,101,3,4,1,47}.
'id-aes128-GCM'() ->
{2,16,840,1,101,3,4,1,6}.
'id-aes192-GCM'() ->
{2,16,840,1,101,3,4,1,26}.
'id-aes256-GCM'() ->
{2,16,840,1,101,3,4,1,46}.
%%================================
%% cea-aes128-CCM
%%================================
'enc_cea-aes128-CCM'('Params', Val, _RestPrimFieldName) ->
enc_CCMParameters(Val, [<<48>>]);
'enc_cea-aes128-CCM'(smimeCaps, Val, [H|T]) ->
'enc_cea-aes128-CCM_smimeCaps'(H, Val, T).
'dec_cea-aes128-CCM'('Params', Bytes,_) ->
Tlv = tlv_format(Bytes),
dec_CCMParameters(Tlv, [16]);
'dec_cea-aes128-CCM'(smimeCaps, Bytes,[H|T]) ->
'dec_cea-aes128-CCM_smimeCaps'(H, Bytes, T).
tlv_format(Bytes) when is_binary(Bytes) ->
{Tlv,_} = ber_decode_nif(Bytes),
Tlv;
tlv_format(Bytes) ->
Bytes.
%%================================
%% cea-aes192-CCM
%%================================
'enc_cea-aes192-CCM'('Params', Val, _RestPrimFieldName) ->
enc_CCMParameters(Val, [<<48>>]);
'enc_cea-aes192-CCM'(smimeCaps, Val, [H|T]) ->
'enc_cea-aes192-CCM_smimeCaps'(H, Val, T).
'dec_cea-aes192-CCM'('Params', Bytes,_) ->
Tlv = tlv_format(Bytes),
dec_CCMParameters(Tlv, [16]);
'dec_cea-aes192-CCM'(smimeCaps, Bytes,[H|T]) ->
'dec_cea-aes192-CCM_smimeCaps'(H, Bytes, T).
%%================================
%% cea-aes256-CCM
%%================================
'enc_cea-aes256-CCM'('Params', Val, _RestPrimFieldName) ->
enc_CCMParameters(Val, [<<48>>]);
'enc_cea-aes256-CCM'(smimeCaps, Val, [H|T]) ->
'enc_cea-aes256-CCM_smimeCaps'(H, Val, T).
'dec_cea-aes256-CCM'('Params', Bytes,_) ->
Tlv = tlv_format(Bytes),
dec_CCMParameters(Tlv, [16]);
'dec_cea-aes256-CCM'(smimeCaps, Bytes,[H|T]) ->
'dec_cea-aes256-CCM_smimeCaps'(H, Bytes, T).
%%================================
%% cea-aes128-GCM
%%================================
'enc_cea-aes128-GCM'('Params', Val, _RestPrimFieldName) ->
enc_GCMParameters(Val, [<<48>>]);
'enc_cea-aes128-GCM'(smimeCaps, Val, [H|T]) ->
'enc_cea-aes128-GCM_smimeCaps'(H, Val, T).
'dec_cea-aes128-GCM'('Params', Bytes,_) ->
Tlv = tlv_format(Bytes),
dec_GCMParameters(Tlv, [16]);
'dec_cea-aes128-GCM'(smimeCaps, Bytes,[H|T]) ->
'dec_cea-aes128-GCM_smimeCaps'(H, Bytes, T).
%%================================
%% cea-aes192-GCM
%%================================
'enc_cea-aes192-GCM'('Params', Val, _RestPrimFieldName) ->
enc_GCMParameters(Val, [<<48>>]);
'enc_cea-aes192-GCM'(smimeCaps, Val, [H|T]) ->
'enc_cea-aes192-GCM_smimeCaps'(H, Val, T).
'dec_cea-aes192-GCM'('Params', Bytes,_) ->
Tlv = tlv_format(Bytes),
dec_GCMParameters(Tlv, [16]);
'dec_cea-aes192-GCM'(smimeCaps, Bytes,[H|T]) ->
'dec_cea-aes192-GCM_smimeCaps'(H, Bytes, T).
%%================================
%% cea-aes256-GCM
%%================================
'enc_cea-aes256-GCM'('Params', Val, _RestPrimFieldName) ->
enc_GCMParameters(Val, [<<48>>]);
'enc_cea-aes256-GCM'(smimeCaps, Val, [H|T]) ->
'enc_cea-aes256-GCM_smimeCaps'(H, Val, T).
'dec_cea-aes256-GCM'('Params', Bytes,_) ->
Tlv = tlv_format(Bytes),
dec_GCMParameters(Tlv, [16]);
'dec_cea-aes256-GCM'(smimeCaps, Bytes,[H|T]) ->
'dec_cea-aes256-GCM_smimeCaps'(H, Bytes, T).
%%================================
%% cea-aes256-GCM_smimeCaps
%%================================
'enc_cea-aes256-GCM_smimeCaps'('Type', Val, _RestPrimFieldName) ->
{Val,0}.
'dec_cea-aes256-GCM_smimeCaps'('Type', Bytes,_) ->
Bytes.
%%================================
%% cea-aes192-GCM_smimeCaps
%%================================
'enc_cea-aes192-GCM_smimeCaps'('Type', Val, _RestPrimFieldName) ->
{Val,0}.
'dec_cea-aes192-GCM_smimeCaps'('Type', Bytes,_) ->
Bytes.
%%================================
%% cea-aes128-GCM_smimeCaps
%%================================
'enc_cea-aes128-GCM_smimeCaps'('Type', Val, _RestPrimFieldName) ->
{Val,0}.
'dec_cea-aes128-GCM_smimeCaps'('Type', Bytes,_) ->
Bytes.
%%================================
%% cea-aes256-CCM_smimeCaps
%%================================
'enc_cea-aes256-CCM_smimeCaps'('Type', Val, _RestPrimFieldName) ->
{Val,0}.
'dec_cea-aes256-CCM_smimeCaps'('Type', Bytes,_) ->
Bytes.
%%================================
%% cea-aes192-CCM_smimeCaps
%%================================
'enc_cea-aes192-CCM_smimeCaps'('Type', Val, _RestPrimFieldName) ->
{Val,0}.
'dec_cea-aes192-CCM_smimeCaps'('Type', Bytes,_) ->
Bytes.
%%================================
%% cea-aes128-CCM_smimeCaps
%%================================
'enc_cea-aes128-CCM_smimeCaps'('Type', Val, _RestPrimFieldName) ->
{Val,0}.
'dec_cea-aes128-CCM_smimeCaps'('Type', Bytes,_) ->
Bytes.
%%================================
%% SMimeCaps
%%================================
getenc_SMimeCaps({2,16,840,1,101,3,4,1,6}) ->
fun(Type, Val, _RestPrimFieldName) ->
case Type of
'Type' ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end
end;
getenc_SMimeCaps({2,16,840,1,101,3,4,1,7}) ->
fun(Type, Val, _RestPrimFieldName) ->
case Type of
'Type' ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end
end;
getenc_SMimeCaps({2,16,840,1,101,3,4,1,26}) ->
fun(Type, Val, _RestPrimFieldName) ->
case Type of
'Type' ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end
end;
getenc_SMimeCaps({2,16,840,1,101,3,4,1,27}) ->
fun(Type, Val, _RestPrimFieldName) ->
case Type of
'Type' ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end
end;
getenc_SMimeCaps({2,16,840,1,101,3,4,1,46}) ->
fun(Type, Val, _RestPrimFieldName) ->
case Type of
'Type' ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end
end;
getenc_SMimeCaps({2,16,840,1,101,3,4,1,47}) ->
fun(Type, Val, _RestPrimFieldName) ->
case Type of
'Type' ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end
end;
getenc_SMimeCaps(_) ->
fun(_, Val, _RestPrimFieldName) ->
case Val of
{asn1_OPENTYPE,Bin} when is_binary(Bin) ->
{Bin,byte_size(Bin)}
end
end.
'getdec_SMimeCaps'({2,16,840,1,101,3,4,1,6}) ->
fun(Type, Bytes, _RestPrimFieldName) ->
case Type of
'Type' ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end
end;
'getdec_SMimeCaps'({2,16,840,1,101,3,4,1,7}) ->
fun(Type, Bytes, _RestPrimFieldName) ->
case Type of
'Type' ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end
end;
'getdec_SMimeCaps'({2,16,840,1,101,3,4,1,26}) ->
fun(Type, Bytes, _RestPrimFieldName) ->
case Type of
'Type' ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end
end;
'getdec_SMimeCaps'({2,16,840,1,101,3,4,1,27}) ->
fun(Type, Bytes, _RestPrimFieldName) ->
case Type of
'Type' ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end
end;
'getdec_SMimeCaps'({2,16,840,1,101,3,4,1,46}) ->
fun(Type, Bytes, _RestPrimFieldName) ->
case Type of
'Type' ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end
end;
'getdec_SMimeCaps'({2,16,840,1,101,3,4,1,47}) ->
fun(Type, Bytes, _RestPrimFieldName) ->
case Type of
'Type' ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end
end;
getdec_SMimeCaps(_) ->
fun(_,Bytes, _RestPrimFieldName) ->
case Bytes of
Bin when is_binary(Bin) ->
{asn1_OPENTYPE,Bin};
_ ->
{asn1_OPENTYPE,ber_encode(Bytes)}
end
end.
%%%
%%% Run-time functions.
%%%
'dialyzer-suppressions'(Arg) ->
ok.
ber_decode_nif(B) ->
asn1rt_nif:decode_ber_tlv(B).
ber_encode([Tlv]) ->
ber_encode(Tlv);
ber_encode(Tlv) when is_binary(Tlv) ->
Tlv;
ber_encode(Tlv) ->
asn1rt_nif:encode_ber_tlv(Tlv).
collect_parts(TlvList) ->
collect_parts(TlvList, []).
collect_parts([{_, L} | Rest], Acc) when is_list(L) ->
collect_parts(Rest, [collect_parts(L) | Acc]);
collect_parts([{3, <<Unused,Bits/binary>>} | Rest], _Acc) ->
collect_parts_bit(Rest, [Bits], Unused);
collect_parts([{_T, V} | Rest], Acc) ->
collect_parts(Rest, [V | Acc]);
collect_parts([], Acc) ->
list_to_binary(lists:reverse(Acc)).
collect_parts_bit([{3, <<Unused,Bits/binary>>} | Rest], Acc, Uacc) ->
collect_parts_bit(Rest, [Bits | Acc], Unused + Uacc);
collect_parts_bit([], Acc, Uacc) ->
list_to_binary([Uacc | lists:reverse(Acc)]).
decode_integer(Tlv, TagIn) ->
Bin = match_tags(Tlv, TagIn),
Len = byte_size(Bin),
<<Int:Len/signed-unit:8>> = Bin,
Int.
decode_octet_string(Tlv, TagsIn) ->
Bin = match_and_collect(Tlv, TagsIn),
binary:copy(Bin).
encode_integer(Val) ->
Bytes =
if
Val >= 0 ->
encode_integer_pos(Val, []);
true ->
encode_integer_neg(Val, [])
end,
{Bytes, length(Bytes)}.
encode_integer(Val, Tag) when is_integer(Val) ->
encode_tags(Tag, encode_integer(Val));
encode_integer(Val, _Tag) ->
exit({error, {asn1, {encode_integer, Val}}}).
encode_integer_neg(-1, [B1 | _T] = L) when B1 > 127 ->
L;
encode_integer_neg(N, Acc) ->
encode_integer_neg(N bsr 8, [N band 255 | Acc]).
encode_integer_pos(0, [B | _Acc] = L) when B < 128 ->
L;
encode_integer_pos(N, Acc) ->
encode_integer_pos(N bsr 8, [N band 255 | Acc]).
encode_length(L) when L =< 127 ->
{[L], 1};
encode_length(L) ->
Oct = minimum_octets(L),
Len = length(Oct),
if
Len =< 126 ->
{[128 bor Len | Oct], Len + 1};
true ->
exit({error, {asn1, too_long_length_oct, Len}})
end.
encode_restricted_string(OctetList, TagIn) when is_binary(OctetList) ->
encode_tags(TagIn, OctetList, byte_size(OctetList));
encode_restricted_string(OctetList, TagIn) when is_list(OctetList) ->
encode_tags(TagIn, OctetList, length(OctetList)).
encode_tags(TagIn, {BytesSoFar, LenSoFar}) ->
encode_tags(TagIn, BytesSoFar, LenSoFar).
encode_tags([Tag | Trest], BytesSoFar, LenSoFar) ->
{Bytes2, L2} = encode_length(LenSoFar),
encode_tags(Trest,
[Tag, Bytes2 | BytesSoFar],
LenSoFar + byte_size(Tag) + L2);
encode_tags([], BytesSoFar, LenSoFar) ->
{BytesSoFar, LenSoFar}.
match_and_collect(Tlv, TagsIn) ->
Val = match_tags(Tlv, TagsIn),
case Val of
[_ | _] = PartList ->
collect_parts(PartList);
Bin when is_binary(Bin) ->
Bin
end.
match_tags({T, V}, [T]) ->
V;
match_tags({T, V}, [T | Tt]) ->
match_tags(V, Tt);
match_tags([{T, V}], [T | Tt]) ->
match_tags(V, Tt);
match_tags([{T, _V} | _] = Vlist, [T]) ->
Vlist;
match_tags(Tlv, []) ->
Tlv;
match_tags({Tag, _V} = Tlv, [T | _Tt]) ->
exit({error, {asn1, {wrong_tag, {{expected, T}, {got, Tag, Tlv}}}}}).
minimum_octets(0, Acc) ->
Acc;
minimum_octets(Val, Acc) ->
minimum_octets(Val bsr 8, [Val band 255 | Acc]).
minimum_octets(Val) ->
minimum_octets(Val, []).