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test.zig
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test.zig
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const std = @import("std");
const string = []const u8;
const asn1 = @import("asn1.zig");
const krb = @import("kerberos.zig");
const assert = std.debug.assert;
test {
// https://svn.nmap.org/nmap/nselib/asn1.lua
// https://svn.nmap.org/nmap/scripts/krb5-enum-users.nse
//
// AS-REQ ::= [APPLICATION 10] KDC-REQ
//
// TGS-REQ ::= [APPLICATION 12] KDC-REQ
//
// KDC-REQ ::= SEQUENCE {
// -- NOTE: first tag is [1], not [0]
// pvno [1] INTEGER (5) ,
// msg-type [2] INTEGER (10 -- AS -- | 12 -- TGS --),
// padata [3] SEQUENCE OF PA-DATA OPTIONAL
// -- NOTE: not empty --,
// req-body [4] KDC-REQ-BODY
// }
//
// KDC-REQ-BODY ::= SEQUENCE {
// kdc-options [0] KDCOptions,
// cname [1] PrincipalName OPTIONAL
// -- Used only in AS-REQ --,
// realm [2] Realm
// -- Server's realm
// -- Also client's in AS-REQ --,
// sname [3] PrincipalName OPTIONAL,
// from [4] KerberosTime OPTIONAL,
// till [5] KerberosTime,
// rtime [6] KerberosTime OPTIONAL,
// nonce [7] UInt32,
// etype [8] SEQUENCE OF Int32 -- EncryptionType
// -- in preference order --,
// addresses [9] HostAddresses OPTIONAL,
// enc-authorization-data [10] EncryptedData OPTIONAL
// -- AuthorizationData --,
// additional-tickets [11] SEQUENCE OF Ticket OPTIONAL
// -- NOTE: not empty
// }
const krb_as_req = [_]u8{
0x00, 0x00, 0x00, 0x7e, 0x6a, 0x7c, 0x30, 0x7a, 0xa1, 0x03, 0x02, 0x01, 0x05, 0xa2, 0x03, 0x02,
0x01, 0x0a, 0xa4, 0x6e, 0x30, 0x6c, 0xa0, 0x07, 0x03, 0x05, 0x00, 0x40, 0x00, 0x00, 0x00, 0xa1,
0x11, 0x30, 0x0f, 0xa0, 0x03, 0x02, 0x01, 0x01, 0xa1, 0x08, 0x30, 0x06, 0x1b, 0x04, 0x6e, 0x6d,
0x61, 0x70, 0xa2, 0x07, 0x1b, 0x05, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0xa3, 0x1a, 0x30, 0x18, 0xa0,
0x03, 0x02, 0x01, 0x02, 0xa1, 0x11, 0x30, 0x0f, 0x1b, 0x06, 0x6b, 0x72, 0x62, 0x74, 0x67, 0x74,
0x1b, 0x05, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0xa5, 0x11, 0x18, 0x0f, 0x32, 0x30, 0x32, 0x34, 0x30,
0x34, 0x32, 0x37, 0x30, 0x34, 0x31, 0x32, 0x34, 0x34, 0x5a, 0xa7, 0x06, 0x02, 0x04, 0x09, 0x4a,
0x76, 0x81, 0xa8, 0x0e, 0x30, 0x0c, 0x02, 0x01, 0x12, 0x02, 0x01, 0x11, 0x02, 0x01, 0x10, 0x02,
0x01, 0x17,
};
var fbs_read = std.io.fixedBufferStream(&krb_as_req);
const r = fbs_read.reader();
const user_name = "nmap";
const realm = "ZZZZZ";
// Length of the entire packet
try expectEqual(try r.readInt(u32, .big), 0x7e);
// AS-REQ ::= [APPLICATION 10] KDC-REQ
try expectTag(r, asn1.Tag.extra(.constructed, .application, 10), 0x7c);
//--------------
// KDC-REQ ::= SEQUENCE {
try expectTag(r, .sequence, 0x7a);
// pvno [1] INTEGER (5) , (version)
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), 3);
try expectEqual(try asn1.readInt(r, u8), 5);
// msg-type [2] INTEGER (10 -- AS -- | 12 -- TGS --),
try expectTag(r, asn1.Tag.extra(.constructed, .context, 2), 3);
try expectEqual(try asn1.readInt(r, u8), 10);
// req-body [4] KDC-REQ-BODY
try expectTag(r, asn1.Tag.extra(.constructed, .context, 4), 0x6e);
//--------------
// KDC-REQ-BODY ::= SEQUENCE {
try expectTag(r, .sequence, 0x6c);
// kdc-options [0] KDCOptions,
try expectTag(r, asn1.Tag.extra(.constructed, .context, 0), 7);
try expectTag(r, .bit_string, 5);
try expectBytes(r, &.{0x00}); // padding?
try expectEqual(try r.readInt(u32, .big), 0x40000000); // options
// cname [1] PrincipalName OPTIONAL
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), 17);
// { user } (encodePrincipal)
try expectTag(r, .sequence, 15);
try expectTag(r, asn1.Tag.extra(.constructed, .context, 0), 3);
try expectEqual(try asn1.readInt(r, u8), 1); // type == 1 (NT-PRINCIPAL)
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), 8);
try expectTag(r, .sequence, 6);
try expectTag(r, .general_string, 4);
try expectBytes(r, "nmap");
// realm [2] Realm
try expectTag(r, asn1.Tag.extra(.constructed, .context, 2), 7);
try expectTag(r, .general_string, 5);
try expectBytes(r, "ZZZZZ");
// sname [3] PrincipalName OPTIONAL,
try expectTag(r, asn1.Tag.extra(.constructed, .context, 3), 26);
// { "krbtgt", realm } (encodePrincipal)
try expectTag(r, .sequence, 24);
try expectTag(r, asn1.Tag.extra(.constructed, .context, 0), 3);
try expectEqual(try asn1.readInt(r, u8), 2); // type == 2 (NT-SRV-INST)
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), 17);
try expectTag(r, .sequence, 15);
try expectTag(r, .general_string, 6);
try expectBytes(r, "krbtgt");
try expectTag(r, .general_string, 5);
try expectBytes(r, "ZZZZZ");
// till [5] KerberosTime,
try expectTag(r, asn1.Tag.extra(.constructed, .context, 5), 17);
{
try std.testing.expectEqual(try r.readByte(), asn1.Tag.int(.generalized_time));
const len = try asn1.Length.read(r);
_ = try r.skipBytes(len, .{});
}
// nonce [7] UInt32,
try expectTag(r, asn1.Tag.extra(.constructed, .context, 7), 6);
try expectEqual(try asn1.readInt(r, u32), 155874945);
// EncryptionTypes = {
// { ['aes256-cts-hmac-sha1-96'] = 18 },
// { ['aes128-cts-hmac-sha1-96'] = 17 },
// { ['des3-cbc-sha1'] = 16 },
// { ['rc4-hmac'] = 23 },
// },
// etype [8] SEQUENCE OF Int32 -- EncryptionType
try expectTag(r, asn1.Tag.extra(.constructed, .context, 8), 14);
try expectTag(r, .sequence, 12);
try expectEqual(try asn1.readInt(r, u8), 18);
try expectEqual(try asn1.readInt(r, u8), 17);
try expectEqual(try asn1.readInt(r, u8), 16);
try expectEqual(try asn1.readInt(r, u8), 23);
//
// Encoding
//
var krb_as_req_enc: [256]u8 = undefined;
var fbs_write = std.io.fixedBufferStream(&krb_as_req_enc);
const w = fbs_write.writer();
// Length of the entire packet
try w.writeInt(u32, 0xffff_ffff, .big); // Dummy value, computed later
// AS-REQ ::= [APPLICATION 10] KDC-REQ
try w.writeByte(asn1.Tag.extra(.constructed, .application, 10).int());
try w.writeByte(0xff); // Dummy value, computed later
// KDC-REQ ::= SEQUENCE {
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(0xff); // Dummy value, computed later
// pvno [1] INTEGER (5) , (version)
try w.writeByte(asn1.Tag.extra(.constructed, .context, 1).int());
try w.writeByte(3);
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(5);
// msg-type [2] INTEGER (10 -- AS -- | 12 -- TGS --),
try w.writeByte(asn1.Tag.extra(.constructed, .context, 2).int());
try w.writeByte(3);
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(10);
// req-body [4] KDC-REQ-BODY
try w.writeByte(asn1.Tag.extra(.constructed, .context, 4).int());
try w.writeByte(0xff); // Dummy value, computed later
// KDC-REQ-BODY ::= SEQUENCE {
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(0xff); // Dummy value, computed later
// kdc-options [0] KDCOptions,
try w.writeByte(asn1.Tag.extra(.constructed, .context, 0).int());
try w.writeByte(7);
try w.writeByte(@intFromEnum(asn1.Tag.bit_string));
try w.writeByte(5);
try w.writeByte(0); // padding
try w.writeInt(u32, 0x40000000, .big);
// cname [1] PrincipalName OPTIONAL
try w.writeByte(asn1.Tag.extra(.constructed, .context, 1).int());
try w.writeByte(user_name.len + 13);
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(user_name.len + 11);
try w.writeByte(asn1.Tag.extra(.constructed, .context, 0).int());
try w.writeByte(3);
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(1); // type == 1 (NT-PRINCIPAL)
try w.writeByte(asn1.Tag.extra(.constructed, .context, 1).int());
try w.writeByte(user_name.len + 4);
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(user_name.len + 2);
try w.writeByte(@intFromEnum(asn1.Tag.general_string));
try w.writeByte(user_name.len);
try w.writeAll(user_name);
// realm [2] Realm
try w.writeByte(asn1.Tag.extra(.constructed, .context, 2).int());
try w.writeByte(realm.len + 2);
try w.writeByte(@intFromEnum(asn1.Tag.general_string));
try w.writeByte(realm.len);
try w.writeAll(realm);
// sname [3] PrincipalName OPTIONAL,
try w.writeByte(asn1.Tag.extra(.constructed, .context, 3).int());
try w.writeByte(realm.len + 21);
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(realm.len + 19);
try w.writeByte(asn1.Tag.extra(.constructed, .context, 0).int());
try w.writeByte(3);
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(2); // type == 2 (NT-SRV-INST)
try w.writeByte(asn1.Tag.extra(.constructed, .context, 1).int());
try w.writeByte(realm.len + 12);
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(realm.len + 10);
try w.writeByte(@intFromEnum(asn1.Tag.general_string));
try w.writeByte("krbtgt".len);
try w.writeAll("krbtgt");
try w.writeByte(@intFromEnum(asn1.Tag.general_string));
try w.writeByte(realm.len);
try w.writeAll(realm);
// till [5] KerberosTime,
try w.writeByte(asn1.Tag.extra(.constructed, .context, 5).int());
try w.writeByte(17);
try w.writeByte(@intFromEnum(asn1.Tag.generalized_time));
try w.writeByte(15);
// local from = os.date("%Y%m%d%H%M%SZ", fromdate)
try w.writeAll("20240427041244Z"); // TODO: Max. time, no expiration: 19700101000000Z
// nonce [7] UInt32,
try w.writeByte(asn1.Tag.extra(.constructed, .context, 7).int());
try w.writeByte(6);
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(4);
try w.writeInt(u32, 155874945, .big);
// etype [8] SEQUENCE OF Int32 -- EncryptionType
try w.writeByte(asn1.Tag.extra(.constructed, .context, 8).int());
try w.writeByte(14);
try w.writeByte(@intFromEnum(asn1.Tag.sequence));
try w.writeByte(12);
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(18); // { ['aes256-cts-hmac-sha1-96'] = 18 },
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(17); // { ['aes128-cts-hmac-sha1-96'] = 17 },
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(16); // { ['des3-cbc-sha1'] = 16 },
try w.writeByte(@intFromEnum(asn1.Tag.integer));
try w.writeByte(1);
try w.writeByte(23); // { ['rc4-hmac'] = 23 },
// Fixups
const total_len: u32 = @intCast(fbs_write.getWritten().len);
std.mem.writeInt(u32, krb_as_req_enc[0..4], total_len - 4, .big);
std.mem.writeInt(u8, krb_as_req_enc[5..6], @intCast(total_len - 6), .big);
std.mem.writeInt(u8, krb_as_req_enc[7..8], @intCast(total_len - 8), .big);
std.mem.writeInt(u8, krb_as_req_enc[19..20], @intCast(total_len - 20), .big);
std.mem.writeInt(u8, krb_as_req_enc[21..22], @intCast(total_len - 22), .big);
try std.testing.expect(std.mem.eql(
u8,
krb_as_req_enc[0..total_len],
krb_as_req[0..total_len],
));
}
test {
const user_name =
"nma8jddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddpuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuux0";
const realm =
"ZZZdwhdjwhdjwhdjwhjdZZaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay1";
var buffer: [512]u8 = undefined;
const packet = try krb.encodeAsReq(buffer[0..], user_name, realm);
const total_len: u32 = @intCast(packet.len);
var fbs_read = std.io.fixedBufferStream(packet);
const r = fbs_read.reader();
// Length of the entire packet
try expectEqual(try r.readInt(u32, .big), total_len - 4);
// AS-REQ ::= [APPLICATION 10] KDC-REQ
try expectTag(r, asn1.Tag.extra(.constructed, .application, 10), total_len - 8);
//--------------
// KDC-REQ ::= SEQUENCE {
try expectTag(r, .sequence, total_len - 12);
// pvno [1] INTEGER (5) , (version)
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), 3);
try expectEqual(try asn1.readInt(r, u8), 5);
// msg-type [2] INTEGER (10 -- AS -- | 12 -- TGS --),
try expectTag(r, asn1.Tag.extra(.constructed, .context, 2), 3);
try expectEqual(try asn1.readInt(r, u8), 10);
// req-body [4] KDC-REQ-BODY
try expectTag(r, asn1.Tag.extra(.constructed, .context, 4), total_len - 26);
//--------------
// KDC-REQ-BODY ::= SEQUENCE {
try expectTag(r, .sequence, total_len - 30);
// kdc-options [0] KDCOptions,
try expectTag(r, asn1.Tag.extra(.constructed, .context, 0), 7);
try expectTag(r, .bit_string, 5);
try expectBytes(r, &.{0x00}); // padding?
try expectEqual(try r.readInt(u32, .big), 0x40000000); // options
// cname [1] PrincipalName OPTIONAL
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), user_name.len + 13);
// { user } (encodePrincipal)
try expectTag(r, .sequence, user_name.len + 11);
try expectTag(r, asn1.Tag.extra(.constructed, .context, 0), 3);
try expectEqual(try asn1.readInt(r, u8), 1); // type == 1 (NT-PRINCIPAL)
try expectTag(r, asn1.Tag.extra(.constructed, .context, 1), user_name.len + 4);
try expectTag(r, .sequence, user_name.len + 2);
try expectTag(r, .general_string, user_name.len);
try expectBytes(r, user_name);
// realm [2] Realm
try expectTag(r, asn1.Tag.extra(.constructed, .context, 2), realm.len + 2);
try expectTag(r, .general_string, realm.len);
try expectBytes(r, realm);
}
// test certificate from https://tls13.xargs.org/certificate.html
test {
const cert = [_]u8{
0x30, 0x82, 0x03, 0x21, 0x30, 0x82, 0x02, 0x09, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x08, 0x15, 0x5a, 0x92, 0xad, 0xc2, 0x04, 0x8f, 0x90, 0x30, 0x0d, 0x06,
0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, 0x22, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55,
0x53, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x0a, 0x45, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x20, 0x43, 0x41, 0x30, 0x1e, 0x17, 0x0d,
0x31, 0x38, 0x31, 0x30, 0x30, 0x35, 0x30, 0x31, 0x33, 0x38, 0x31, 0x37, 0x5a, 0x17, 0x0d, 0x31, 0x39, 0x31, 0x30, 0x30, 0x35, 0x30, 0x31, 0x33, 0x38, 0x31,
0x37, 0x5a, 0x30, 0x2b, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x1c, 0x30, 0x1a, 0x06, 0x03, 0x55, 0x04, 0x03,
0x13, 0x13, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x75, 0x6c, 0x66, 0x68, 0x65, 0x69, 0x6d, 0x2e, 0x6e, 0x65, 0x74, 0x30, 0x82, 0x01, 0x22, 0x30,
0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01,
0x01, 0x00, 0xc4, 0x80, 0x36, 0x06, 0xba, 0xe7, 0x47, 0x6b, 0x08, 0x94, 0x04, 0xec, 0xa7, 0xb6, 0x91, 0x04, 0x3f, 0xf7, 0x92, 0xbc, 0x19, 0xee, 0xfb, 0x7d,
0x74, 0xd7, 0xa8, 0x0d, 0x00, 0x1e, 0x7b, 0x4b, 0x3a, 0x4a, 0xe6, 0x0f, 0xe8, 0xc0, 0x71, 0xfc, 0x73, 0xe7, 0x02, 0x4c, 0x0d, 0xbc, 0xf4, 0xbd, 0xd1, 0x1d,
0x39, 0x6b, 0xba, 0x70, 0x46, 0x4a, 0x13, 0xe9, 0x4a, 0xf8, 0x3d, 0xf3, 0xe1, 0x09, 0x59, 0x54, 0x7b, 0xc9, 0x55, 0xfb, 0x41, 0x2d, 0xa3, 0x76, 0x52, 0x11,
0xe1, 0xf3, 0xdc, 0x77, 0x6c, 0xaa, 0x53, 0x37, 0x6e, 0xca, 0x3a, 0xec, 0xbe, 0xc3, 0xaa, 0xb7, 0x3b, 0x31, 0xd5, 0x6c, 0xb6, 0x52, 0x9c, 0x80, 0x98, 0xbc,
0xc9, 0xe0, 0x28, 0x18, 0xe2, 0x0b, 0xf7, 0xf8, 0xa0, 0x3a, 0xfd, 0x17, 0x04, 0x50, 0x9e, 0xce, 0x79, 0xbd, 0x9f, 0x39, 0xf1, 0xea, 0x69, 0xec, 0x47, 0x97,
0x2e, 0x83, 0x0f, 0xb5, 0xca, 0x95, 0xde, 0x95, 0xa1, 0xe6, 0x04, 0x22, 0xd5, 0xee, 0xbe, 0x52, 0x79, 0x54, 0xa1, 0xe7, 0xbf, 0x8a, 0x86, 0xf6, 0x46, 0x6d,
0x0d, 0x9f, 0x16, 0x95, 0x1a, 0x4c, 0xf7, 0xa0, 0x46, 0x92, 0x59, 0x5c, 0x13, 0x52, 0xf2, 0x54, 0x9e, 0x5a, 0xfb, 0x4e, 0xbf, 0xd7, 0x7a, 0x37, 0x95, 0x01,
0x44, 0xe4, 0xc0, 0x26, 0x87, 0x4c, 0x65, 0x3e, 0x40, 0x7d, 0x7d, 0x23, 0x07, 0x44, 0x01, 0xf4, 0x84, 0xff, 0xd0, 0x8f, 0x7a, 0x1f, 0xa0, 0x52, 0x10, 0xd1,
0xf4, 0xf0, 0xd5, 0xce, 0x79, 0x70, 0x29, 0x32, 0xe2, 0xca, 0xbe, 0x70, 0x1f, 0xdf, 0xad, 0x6b, 0x4b, 0xb7, 0x11, 0x01, 0xf4, 0x4b, 0xad, 0x66, 0x6a, 0x11,
0x13, 0x0f, 0xe2, 0xee, 0x82, 0x9e, 0x4d, 0x02, 0x9d, 0xc9, 0x1c, 0xdd, 0x67, 0x16, 0xdb, 0xb9, 0x06, 0x18, 0x86, 0xed, 0xc1, 0xba, 0x94, 0x21, 0x02, 0x03,
0x01, 0x00, 0x01, 0xa3, 0x52, 0x30, 0x50, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x05, 0xa0, 0x30, 0x1d, 0x06,
0x03, 0x55, 0x1d, 0x25, 0x04, 0x16, 0x30, 0x14, 0x06, 0x08, 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x02, 0x06, 0x08, 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07,
0x03, 0x01, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80, 0x14, 0x89, 0x4f, 0xde, 0x5b, 0xcc, 0x69, 0xe2, 0x52, 0xcf, 0x3e, 0xa3,
0x00, 0xdf, 0xb1, 0x97, 0xb8, 0x1d, 0xe1, 0xc1, 0x46, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, 0x82,
0x01, 0x01, 0x00, 0x59, 0x16, 0x45, 0xa6, 0x9a, 0x2e, 0x37, 0x79, 0xe4, 0xf6, 0xdd, 0x27, 0x1a, 0xba, 0x1c, 0x0b, 0xfd, 0x6c, 0xd7, 0x55, 0x99, 0xb5, 0xe7,
0xc3, 0x6e, 0x53, 0x3e, 0xff, 0x36, 0x59, 0x08, 0x43, 0x24, 0xc9, 0xe7, 0xa5, 0x04, 0x07, 0x9d, 0x39, 0xe0, 0xd4, 0x29, 0x87, 0xff, 0xe3, 0xeb, 0xdd, 0x09,
0xc1, 0xcf, 0x1d, 0x91, 0x44, 0x55, 0x87, 0x0b, 0x57, 0x1d, 0xd1, 0x9b, 0xdf, 0x1d, 0x24, 0xf8, 0xbb, 0x9a, 0x11, 0xfe, 0x80, 0xfd, 0x59, 0x2b, 0xa0, 0x39,
0x8c, 0xde, 0x11, 0xe2, 0x65, 0x1e, 0x61, 0x8c, 0xe5, 0x98, 0xfa, 0x96, 0xe5, 0x37, 0x2e, 0xef, 0x3d, 0x24, 0x8a, 0xfd, 0xe1, 0x74, 0x63, 0xeb, 0xbf, 0xab,
0xb8, 0xe4, 0xd1, 0xab, 0x50, 0x2a, 0x54, 0xec, 0x00, 0x64, 0xe9, 0x2f, 0x78, 0x19, 0x66, 0x0d, 0x3f, 0x27, 0xcf, 0x20, 0x9e, 0x66, 0x7f, 0xce, 0x5a, 0xe2,
0xe4, 0xac, 0x99, 0xc7, 0xc9, 0x38, 0x18, 0xf8, 0xb2, 0x51, 0x07, 0x22, 0xdf, 0xed, 0x97, 0xf3, 0x2e, 0x3e, 0x93, 0x49, 0xd4, 0xc6, 0x6c, 0x9e, 0xa6, 0x39,
0x6d, 0x74, 0x44, 0x62, 0xa0, 0x6b, 0x42, 0xc6, 0xd5, 0xba, 0x68, 0x8e, 0xac, 0x3a, 0x01, 0x7b, 0xdd, 0xfc, 0x8e, 0x2c, 0xfc, 0xad, 0x27, 0xcb, 0x69, 0xd3,
0xcc, 0xdc, 0xa2, 0x80, 0x41, 0x44, 0x65, 0xd3, 0xae, 0x34, 0x8c, 0xe0, 0xf3, 0x4a, 0xb2, 0xfb, 0x9c, 0x61, 0x83, 0x71, 0x31, 0x2b, 0x19, 0x10, 0x41, 0x64,
0x1c, 0x23, 0x7f, 0x11, 0xa5, 0xd6, 0x5c, 0x84, 0x4f, 0x04, 0x04, 0x84, 0x99, 0x38, 0x71, 0x2b, 0x95, 0x9e, 0xd6, 0x85, 0xbc, 0x5c, 0x5d, 0xd6, 0x45, 0xed,
0x19, 0x90, 0x94, 0x73, 0x40, 0x29, 0x26, 0xdc, 0xb4, 0x0e, 0x34, 0x69, 0xa1, 0x59, 0x41, 0xe8, 0xe2, 0xcc, 0xa8, 0x4b, 0xb6, 0x08, 0x46, 0x36, 0xa0,
};
var fbs = std.io.fixedBufferStream(&cert);
const r = fbs.reader();
// Certificate Sequence
try expectTag(r, .sequence, 801);
// Certificate Info Sequence
try expectTag(r, .sequence, 521);
// Version
try expectTag(r, asn1.Tag.extra(.constructed, .context, 0), 3);
try expectEqual(try asn1.readInt(r, u8), 2);
// Serial Number
try expectEqual(try asn1.readInt(r, u64), 0x155a92adc2048f90);
// Algorithm
try expectTag(r, .sequence, 13);
try expectTagStr(r, .object_identifier, 9, "\x2a\x86\x48\x86\xf7\x0d\x01\x01\x0b");
try asn1.readNull(r);
// Issuer Sequence
try expectTag(r, .sequence, 34);
// Country
try expectTag(r, .set, 11);
try expectTag(r, .sequence, 9);
try expectTagStr(r, .object_identifier, 3, "\x55\x04\x06");
try expectTagStr(r, .printable_string, 2, "US");
// Organizational Unit
try expectTag(r, .set, 19);
try expectTag(r, .sequence, 17);
try expectTagStr(r, .object_identifier, 3, "\x55\x04\x0a");
try expectTagStr(r, .printable_string, 10, "Example CA");
// Validity
try expectTag(r, .sequence, 30);
try expectTagStr(r, .utc_time, 13, "181005013817Z");
try expectTagStr(r, .utc_time, 13, "191005013817Z");
// Subject Sequence
try expectTag(r, .sequence, 43);
// Country
try expectTag(r, .set, 11);
try expectTag(r, .sequence, 9);
try expectTagStr(r, .object_identifier, 3, "\x55\x04\x06");
try expectTagStr(r, .printable_string, 2, "US");
// Common Name
try expectTag(r, .set, 28);
try expectTag(r, .sequence, 26);
try expectTagStr(r, .object_identifier, 3, "\x55\x04\x03");
try expectTagStr(r, .printable_string, 19, "example.ulfheim.net");
// Public Key
try expectTag(r, .sequence, 290);
try expectTag(r, .sequence, 13);
try expectTagStr(r, .object_identifier, 9, "\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01");
try asn1.readNull(r);
try expectTag(r, .bit_string, 271);
assertEql(try r.readByte(), 0);
try expectBytes(r, &[_]u8{
0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xc4, 0x80, 0x36, 0x06, 0xba, 0xe7, 0x47, 0x6b, 0x08, 0x94, 0x04, 0xec,
0xa7, 0xb6, 0x91, 0x04, 0x3f, 0xf7, 0x92, 0xbc, 0x19, 0xee, 0xfb, 0x7d, 0x74, 0xd7, 0xa8, 0x0d, 0x00, 0x1e, 0x7b, 0x4b, 0x3a,
0x4a, 0xe6, 0x0f, 0xe8, 0xc0, 0x71, 0xfc, 0x73, 0xe7, 0x02, 0x4c, 0x0d, 0xbc, 0xf4, 0xbd, 0xd1, 0x1d, 0x39, 0x6b, 0xba, 0x70,
0x46, 0x4a, 0x13, 0xe9, 0x4a, 0xf8, 0x3d, 0xf3, 0xe1, 0x09, 0x59, 0x54, 0x7b, 0xc9, 0x55, 0xfb, 0x41, 0x2d, 0xa3, 0x76, 0x52,
0x11, 0xe1, 0xf3, 0xdc, 0x77, 0x6c, 0xaa, 0x53, 0x37, 0x6e, 0xca, 0x3a, 0xec, 0xbe, 0xc3, 0xaa, 0xb7, 0x3b, 0x31, 0xd5, 0x6c,
0xb6, 0x52, 0x9c, 0x80, 0x98, 0xbc, 0xc9, 0xe0, 0x28, 0x18, 0xe2, 0x0b, 0xf7, 0xf8, 0xa0, 0x3a, 0xfd, 0x17, 0x04, 0x50, 0x9e,
0xce, 0x79, 0xbd, 0x9f, 0x39, 0xf1, 0xea, 0x69, 0xec, 0x47, 0x97, 0x2e, 0x83, 0x0f, 0xb5, 0xca, 0x95, 0xde, 0x95, 0xa1, 0xe6,
0x04, 0x22, 0xd5, 0xee, 0xbe, 0x52, 0x79, 0x54, 0xa1, 0xe7, 0xbf, 0x8a, 0x86, 0xf6, 0x46, 0x6d, 0x0d, 0x9f, 0x16, 0x95, 0x1a,
0x4c, 0xf7, 0xa0, 0x46, 0x92, 0x59, 0x5c, 0x13, 0x52, 0xf2, 0x54, 0x9e, 0x5a, 0xfb, 0x4e, 0xbf, 0xd7, 0x7a, 0x37, 0x95, 0x01,
0x44, 0xe4, 0xc0, 0x26, 0x87, 0x4c, 0x65, 0x3e, 0x40, 0x7d, 0x7d, 0x23, 0x07, 0x44, 0x01, 0xf4, 0x84, 0xff, 0xd0, 0x8f, 0x7a,
0x1f, 0xa0, 0x52, 0x10, 0xd1, 0xf4, 0xf0, 0xd5, 0xce, 0x79, 0x70, 0x29, 0x32, 0xe2, 0xca, 0xbe, 0x70, 0x1f, 0xdf, 0xad, 0x6b,
0x4b, 0xb7, 0x11, 0x01, 0xf4, 0x4b, 0xad, 0x66, 0x6a, 0x11, 0x13, 0x0f, 0xe2, 0xee, 0x82, 0x9e, 0x4d, 0x02, 0x9d, 0xc9, 0x1c,
0xdd, 0x67, 0x16, 0xdb, 0xb9, 0x06, 0x18, 0x86, 0xed, 0xc1, 0xba, 0x94, 0x21, 0x02, 0x03, 0x01, 0x00, 0x01,
});
// Extensions
try expectTag(r, asn1.Tag.extra(.constructed, .context, 3), 82);
try expectTag(r, .sequence, 80);
// Extension - Key Usage
try expectTag(r, .sequence, 14);
try expectTagStr(r, .object_identifier, 3, "\x55\x1d\x0f");
try expectEqual(try asn1.readBoolean(r), true);
try expectTag(r, .octet_string, 4);
try expectTag(r, .bit_string, 2);
assertEql(try r.readByte(), 5);
assertEql(try r.readByte(), 0xa0);
// Extension - Extended Key Usage
try expectTag(r, .sequence, 29);
try expectTagStr(r, .object_identifier, 3, "\x55\x1d\x25");
try expectTag(r, .octet_string, 22);
try expectTag(r, .sequence, 20);
try expectTagStr(r, .object_identifier, 8, "\x2b\x06\x01\x05\x05\x07\x03\x02");
try expectTagStr(r, .object_identifier, 8, "\x2b\x06\x01\x05\x05\x07\x03\x01");
// Extension - Authority Key Identifier
try expectTag(r, .sequence, 31);
try expectTagStr(r, .object_identifier, 3, "\x55\x1d\x23");
try expectTag(r, .octet_string, 24);
try expectTag(r, .sequence, 22);
try expectTagStr(r, asn1.Tag.extra(.primitive, .context, 0), 20, &[_]u8{ 0x89, 0x4f, 0xde, 0x5b, 0xcc, 0x69, 0xe2, 0x52, 0xcf, 0x3e, 0xa3, 0x00, 0xdf, 0xb1, 0x97, 0xb8, 0x1d, 0xe1, 0xc1, 0x46 });
// Signature Algorithm
try expectTag(r, .sequence, 13);
try expectTagStr(r, .object_identifier, 9, "\x2a\x86\x48\x86\xf7\x0d\x01\x01\x0b");
try asn1.readNull(r);
// Signature
try expectTag(r, .bit_string, 257);
assertEql(try r.readByte(), 0);
try expectBytes(r, &[_]u8{
0x59, 0x16, 0x45, 0xa6, 0x9a, 0x2e, 0x37, 0x79, 0xe4, 0xf6, 0xdd, 0x27, 0x1a, 0xba, 0x1c, 0x0b,
0xfd, 0x6c, 0xd7, 0x55, 0x99, 0xb5, 0xe7, 0xc3, 0x6e, 0x53, 0x3e, 0xff, 0x36, 0x59, 0x08, 0x43,
0x24, 0xc9, 0xe7, 0xa5, 0x04, 0x07, 0x9d, 0x39, 0xe0, 0xd4, 0x29, 0x87, 0xff, 0xe3, 0xeb, 0xdd,
0x09, 0xc1, 0xcf, 0x1d, 0x91, 0x44, 0x55, 0x87, 0x0b, 0x57, 0x1d, 0xd1, 0x9b, 0xdf, 0x1d, 0x24,
0xf8, 0xbb, 0x9a, 0x11, 0xfe, 0x80, 0xfd, 0x59, 0x2b, 0xa0, 0x39, 0x8c, 0xde, 0x11, 0xe2, 0x65,
0x1e, 0x61, 0x8c, 0xe5, 0x98, 0xfa, 0x96, 0xe5, 0x37, 0x2e, 0xef, 0x3d, 0x24, 0x8a, 0xfd, 0xe1,
0x74, 0x63, 0xeb, 0xbf, 0xab, 0xb8, 0xe4, 0xd1, 0xab, 0x50, 0x2a, 0x54, 0xec, 0x00, 0x64, 0xe9,
0x2f, 0x78, 0x19, 0x66, 0x0d, 0x3f, 0x27, 0xcf, 0x20, 0x9e, 0x66, 0x7f, 0xce, 0x5a, 0xe2, 0xe4,
0xac, 0x99, 0xc7, 0xc9, 0x38, 0x18, 0xf8, 0xb2, 0x51, 0x07, 0x22, 0xdf, 0xed, 0x97, 0xf3, 0x2e,
0x3e, 0x93, 0x49, 0xd4, 0xc6, 0x6c, 0x9e, 0xa6, 0x39, 0x6d, 0x74, 0x44, 0x62, 0xa0, 0x6b, 0x42,
0xc6, 0xd5, 0xba, 0x68, 0x8e, 0xac, 0x3a, 0x01, 0x7b, 0xdd, 0xfc, 0x8e, 0x2c, 0xfc, 0xad, 0x27,
0xcb, 0x69, 0xd3, 0xcc, 0xdc, 0xa2, 0x80, 0x41, 0x44, 0x65, 0xd3, 0xae, 0x34, 0x8c, 0xe0, 0xf3,
0x4a, 0xb2, 0xfb, 0x9c, 0x61, 0x83, 0x71, 0x31, 0x2b, 0x19, 0x10, 0x41, 0x64, 0x1c, 0x23, 0x7f,
0x11, 0xa5, 0xd6, 0x5c, 0x84, 0x4f, 0x04, 0x04, 0x84, 0x99, 0x38, 0x71, 0x2b, 0x95, 0x9e, 0xd6,
0x85, 0xbc, 0x5c, 0x5d, 0xd6, 0x45, 0xed, 0x19, 0x90, 0x94, 0x73, 0x40, 0x29, 0x26, 0xdc, 0xb4,
0x0e, 0x34, 0x69, 0xa1, 0x59, 0x41, 0xe8, 0xe2, 0xcc, 0xa8, 0x4b, 0xb6, 0x08, 0x46, 0x36, 0xa0,
});
// End
try std.testing.expectError(error.EndOfStream, r.readByte());
}
fn assertEql(actual: anytype, expected: @TypeOf(actual)) void {
if (actual != expected) std.log.err("actual: {any}, expected: {any}", .{ actual, expected });
assert(actual == expected);
}
fn expectBytes(reader: anytype, expected: []const u8) !void {
for (expected) |item| {
try std.testing.expectEqual(item, try reader.readByte());
}
}
fn expectTag(reader: anytype, tag: asn1.Tag, len: u64) !void {
try std.testing.expectEqual(tag.int(), try reader.readByte());
try std.testing.expectEqual(len, try asn1.Length.read(reader));
}
fn expectTagStr(reader: anytype, tag: asn1.Tag, len: u64, str: []const u8) !void {
try expectTag(reader, tag, len);
try std.testing.expectEqual(len, str.len);
try expectBytes(reader, str);
}
fn expectEqual(actual: anytype, expected: @TypeOf(actual)) !void {
try std.testing.expectEqual(expected, actual);
}