This is a real-world certificate (in fact the same as cert_version3.pem)
$ openssl asn1parse -i < [TBS CERTIFICATE]
0:d=0 hl=4 l=1087 cons: SEQUENCE
4:d=1 hl=2 l= 3 cons: cont [ 0 ]
6:d=2 hl=2 l= 1 prim: INTEGER :02
9:d=1 hl=2 l= 7 prim: INTEGER :2B63A42A705076
18:d=1 hl=2 l= 13 cons: SEQUENCE
20:d=2 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption
31:d=2 hl=2 l= 0 prim: NULL
33:d=1 hl=3 l= 202 cons: SEQUENCE
36:d=2 hl=2 l= 11 cons: SET
38:d=3 hl=2 l= 9 cons: SEQUENCE
40:d=4 hl=2 l= 3 prim: OBJECT :countryName
45:d=4 hl=2 l= 2 prim: PRINTABLESTRING :US
49:d=2 hl=2 l= 16 cons: SET
51:d=3 hl=2 l= 14 cons: SEQUENCE
53:d=4 hl=2 l= 3 prim: OBJECT :stateOrProvinceName
58:d=4 hl=2 l= 7 prim: PRINTABLESTRING :Arizona
67:d=2 hl=2 l= 19 cons: SET
69:d=3 hl=2 l= 17 cons: SEQUENCE
71:d=4 hl=2 l= 3 prim: OBJECT :localityName
76:d=4 hl=2 l= 10 prim: PRINTABLESTRING :Scottsdale
88:d=2 hl=2 l= 26 cons: SET
90:d=3 hl=2 l= 24 cons: SEQUENCE
92:d=4 hl=2 l= 3 prim: OBJECT :organizationName
97:d=4 hl=2 l= 17 prim: PRINTABLESTRING :GoDaddy.com, Inc.
116:d=2 hl=2 l= 51 cons: SET
118:d=3 hl=2 l= 49 cons: SEQUENCE
120:d=4 hl=2 l= 3 prim: OBJECT :organizationalUnitName
125:d=4 hl=2 l= 42 prim: PRINTABLESTRING :http://certificates.godaddy.com/repository
169:d=2 hl=2 l= 48 cons: SET
171:d=3 hl=2 l= 46 cons: SEQUENCE
173:d=4 hl=2 l= 3 prim: OBJECT :commonName
178:d=4 hl=2 l= 39 prim: PRINTABLESTRING :Go Daddy Secure Certification Authority
219:d=2 hl=2 l= 17 cons: SET
221:d=3 hl=2 l= 15 cons: SEQUENCE
223:d=4 hl=2 l= 3 prim: OBJECT :serialNumber
228:d=4 hl=2 l= 8 prim: PRINTABLESTRING :07969287
238:d=1 hl=2 l= 30 cons: SEQUENCE
240:d=2 hl=2 l= 13 prim: UTCTIME :120419135324Z
255:d=2 hl=2 l= 13 prim: UTCTIME :130419135324Z
270:d=1 hl=2 l= 79 cons: SEQUENCE
272:d=2 hl=2 l= 20 cons: SET
274:d=3 hl=2 l= 18 cons: SEQUENCE
276:d=4 hl=2 l= 3 prim: OBJECT :organizationName
281:d=4 hl=2 l= 11 prim: PRINTABLESTRING :kthulhu.net
294:d=2 hl=2 l= 33 cons: SET
296:d=3 hl=2 l= 31 cons: SEQUENCE
298:d=4 hl=2 l= 3 prim: OBJECT :organizationalUnitName
303:d=4 hl=2 l= 24 prim: PRINTABLESTRING :Domain Control Validated
329:d=2 hl=2 l= 20 cons: SET
331:d=3 hl=2 l= 18 cons: SEQUENCE
333:d=4 hl=2 l= 3 prim: OBJECT :commonName
338:d=4 hl=2 l= 11 prim: PRINTABLESTRING :kthulhu.net
351:d=1 hl=4 l= 290 cons: SEQUENCE
355:d=2 hl=2 l= 13 cons: SEQUENCE
357:d=3 hl=2 l= 9 prim: OBJECT :rsaEncryption
368:d=3 hl=2 l= 0 prim: NULL
370:d=2 hl=4 l= 271 prim: BIT STRING
645:d=1 hl=4 l= 442 cons: cont [ 3 ]
649:d=2 hl=4 l= 438 cons: SEQUENCE
653:d=3 hl=2 l= 15 cons: SEQUENCE
655:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Basic Constraints
660:d=4 hl=2 l= 1 prim: BOOLEAN :255
663:d=4 hl=2 l= 5 prim: OCTET STRING [HEX DUMP]:3003010100
670:d=3 hl=2 l= 29 cons: SEQUENCE
672:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Extended Key Usage
677:d=4 hl=2 l= 22 prim: OCTET STRING [HEX DUMP]:301406082B0601050507030106082B06010505070302
701:d=3 hl=2 l= 14 cons: SEQUENCE
703:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Key Usage
708:d=4 hl=2 l= 1 prim: BOOLEAN :255
711:d=4 hl=2 l= 4 prim: OCTET STRING [HEX DUMP]:030205A0
717:d=3 hl=2 l= 51 cons: SEQUENCE
719:d=4 hl=2 l= 3 prim: OBJECT :X509v3 CRL Distribution Points
724:d=4 hl=2 l= 44 prim: OCTET STRING [HEX DUMP]:302A3028A026A0248622687474703A2F2F63726C2E676F64616464792E636F6D2F676473312D36382E63726C
770:d=3 hl=2 l= 83 cons: SEQUENCE
772:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Certificate Policies
777:d=4 hl=2 l= 76 prim: OCTET STRING [HEX DUMP]:304A3048060B6086480186FD6D010717013039303706082B06010505070201162B687474703A2F2F6365727469666963617465732E676F64616464792E636F6D2F7265706F7369746F72792F
855:d=3 hl=3 l= 128 cons: SEQUENCE
858:d=4 hl=2 l= 8 prim: OBJECT :Authority Information Access
868:d=4 hl=2 l= 116 prim: OCTET STRING [HEX DUMP]:3072302406082B060105050730018618687474703A2F2F6F6373702E676F64616464792E636F6D2F304A06082B06010505073002863E687474703A2F2F6365727469666963617465732E676F64616464792E636F6D2F7265706F7369746F72792F67645F696E7465726D6564696174652E637274
986:d=3 hl=2 l= 31 cons: SEQUENCE
988:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Authority Key Identifier
993:d=4 hl=2 l= 24 prim: OCTET STRING [HEX DUMP]:30168014FDAC6132936C45D6E2EE855F9ABAE7769968CCE7
1019:d=3 hl=2 l= 39 cons: SEQUENCE
1021:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Subject Alternative Name
1026:d=4 hl=2 l= 32 prim: OCTET STRING [HEX DUMP]:301E820B6B7468756C68752E6E6574820F7777772E6B7468756C68752E6E6574
1060:d=3 hl=2 l= 29 cons: SEQUENCE
1062:d=4 hl=2 l= 3 prim: OBJECT :X509v3 Subject Key Identifier
1067:d=4 hl=2 l= 22 prim: OCTET STRING [HEX DUMP]:0414A31E1AB1A9E4F550BC3E05E174CF01D09E35E017
-----BEGIN TBS CERTIFICATE-----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-----END TBS CERTIFICATE-----
-----BEGIN SERIAL NUMBER-----
K2OkKnBQdg==
-----END SERIAL NUMBER-----
$ openssl asn1parse -i < [SIGNATURE ALGORITHM]
0:d=0 hl=2 l= 13 cons: SEQUENCE
2:d=1 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption
13:d=1 hl=2 l= 0 prim: NULL
-----BEGIN SIGNATURE ALGORITHM-----
MA0GCSqGSIb3DQEBBQUA
-----END SIGNATURE ALGORITHM-----
$ openssl asn1parse -i < [ISSUER]
0:d=0 hl=3 l= 202 cons: SEQUENCE
3:d=1 hl=2 l= 11 cons: SET
5:d=2 hl=2 l= 9 cons: SEQUENCE
7:d=3 hl=2 l= 3 prim: OBJECT :countryName
12:d=3 hl=2 l= 2 prim: PRINTABLESTRING :US
16:d=1 hl=2 l= 16 cons: SET
18:d=2 hl=2 l= 14 cons: SEQUENCE
20:d=3 hl=2 l= 3 prim: OBJECT :stateOrProvinceName
25:d=3 hl=2 l= 7 prim: PRINTABLESTRING :Arizona
34:d=1 hl=2 l= 19 cons: SET
36:d=2 hl=2 l= 17 cons: SEQUENCE
38:d=3 hl=2 l= 3 prim: OBJECT :localityName
43:d=3 hl=2 l= 10 prim: PRINTABLESTRING :Scottsdale
55:d=1 hl=2 l= 26 cons: SET
57:d=2 hl=2 l= 24 cons: SEQUENCE
59:d=3 hl=2 l= 3 prim: OBJECT :organizationName
64:d=3 hl=2 l= 17 prim: PRINTABLESTRING :GoDaddy.com, Inc.
83:d=1 hl=2 l= 51 cons: SET
85:d=2 hl=2 l= 49 cons: SEQUENCE
87:d=3 hl=2 l= 3 prim: OBJECT :organizationalUnitName
92:d=3 hl=2 l= 42 prim: PRINTABLESTRING :http://certificates.godaddy.com/repository
136:d=1 hl=2 l= 48 cons: SET
138:d=2 hl=2 l= 46 cons: SEQUENCE
140:d=3 hl=2 l= 3 prim: OBJECT :commonName
145:d=3 hl=2 l= 39 prim: PRINTABLESTRING :Go Daddy Secure Certification Authority
186:d=1 hl=2 l= 17 cons: SET
188:d=2 hl=2 l= 15 cons: SEQUENCE
190:d=3 hl=2 l= 3 prim: OBJECT :serialNumber
195:d=3 hl=2 l= 8 prim: PRINTABLESTRING :07969287
-----BEGIN ISSUER-----
MIHKMQswCQYDVQQGEwJVUzEQMA4GA1UECBMHQXJpem9uYTETMBEGA1UEBxMKU2NvdHRzZGFsZTE
aMBgGA1UEChMRR29EYWRkeS5jb20sIEluYy4xMzAxBgNVBAsTKmh0dHA6Ly9jZXJ0aWZpY2F0ZX
MuZ29kYWRkeS5jb20vcmVwb3NpdG9yeTEwMC4GA1UEAxMnR28gRGFkZHkgU2VjdXJlIENlcnRpZ
mljYXRpb24gQXV0aG9yaXR5MREwDwYDVQQFEwgwNzk2OTI4Nw==
-----END ISSUER-----
VALIDITY NOTBEFORE: year=2012, month=4, day=19, hours=13, minutes=53, seconds=24
-----BEGIN VALIDITY NOTBEFORE-----
eWVhcj0yMDEyLCBtb250aD00LCBkYXk9MTksIGhvdXJzPTEzLCBtaW51dGVzPTUzLCBzZWNvbmR
zPTI0
-----END VALIDITY NOTBEFORE-----
VALIDITY NOTAFTER: year=2013, month=4, day=19, hours=13, minutes=53, seconds=24
-----BEGIN VALIDITY NOTAFTER-----
eWVhcj0yMDEzLCBtb250aD00LCBkYXk9MTksIGhvdXJzPTEzLCBtaW51dGVzPTUzLCBzZWNvbmR
zPTI0
-----END VALIDITY NOTAFTER-----
$ openssl asn1parse -i < [SUBJECT]
0:d=0 hl=2 l= 79 cons: SEQUENCE
2:d=1 hl=2 l= 20 cons: SET
4:d=2 hl=2 l= 18 cons: SEQUENCE
6:d=3 hl=2 l= 3 prim: OBJECT :organizationName
11:d=3 hl=2 l= 11 prim: PRINTABLESTRING :kthulhu.net
24:d=1 hl=2 l= 33 cons: SET
26:d=2 hl=2 l= 31 cons: SEQUENCE
28:d=3 hl=2 l= 3 prim: OBJECT :organizationalUnitName
33:d=3 hl=2 l= 24 prim: PRINTABLESTRING :Domain Control Validated
59:d=1 hl=2 l= 20 cons: SET
61:d=2 hl=2 l= 18 cons: SEQUENCE
63:d=3 hl=2 l= 3 prim: OBJECT :commonName
68:d=3 hl=2 l= 11 prim: PRINTABLESTRING :kthulhu.net
-----BEGIN SUBJECT-----
ME8xFDASBgNVBAoTC2t0aHVsaHUubmV0MSEwHwYDVQQLExhEb21haW4gQ29udHJvbCBWYWxpZGF
0ZWQxFDASBgNVBAMTC2t0aHVsaHUubmV0
-----END SUBJECT-----
$ openssl asn1parse -i < [SPKI]
0:d=0 hl=4 l= 290 cons: SEQUENCE
4:d=1 hl=2 l= 13 cons: SEQUENCE
6:d=2 hl=2 l= 9 prim: OBJECT :rsaEncryption
17:d=2 hl=2 l= 0 prim: NULL
19:d=1 hl=4 l= 271 prim: BIT STRING
-----BEGIN SPKI-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArzQkuEZv5xkNLJ7RCgAYmH4vG87FFPF
m5J+9ObenNAFqm8V5C4IzXm1+s7ro0sndLOyDH5INNAtKkuqp7kqubl1bbP3Z4+Ra3ENv7cpwQb
QjoaajRKCGRULs/jFMCAASii/+3jkkufNimu7cBfDXOSQR2YQZL4zhDW7ss/zwTVspYnxvU7oDc
qOIwCmFwQ/FvYTAxF1uozKBsJfL854v0MKI7GEyyn6W8jZ7f8cSc8ahvrLAYt/etAxrmHcMUVJb
W+gxXiwJsHfj03S1/RypHTb4gRqEz3pX6wl8sqtJP0L5mXuQgESoEAZ4SrPYLxXytqrU1yLi32x
gWwHu1A7fIQIDAQAB
-----END SPKI-----
$ openssl asn1parse -i < [EXTENSIONS]
0:d=0 hl=4 l= 438 cons: SEQUENCE
4:d=1 hl=2 l= 15 cons: SEQUENCE
6:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Basic Constraints
11:d=2 hl=2 l= 1 prim: BOOLEAN :255
14:d=2 hl=2 l= 5 prim: OCTET STRING [HEX DUMP]:3003010100
21:d=1 hl=2 l= 29 cons: SEQUENCE
23:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Extended Key Usage
28:d=2 hl=2 l= 22 prim: OCTET STRING [HEX DUMP]:301406082B0601050507030106082B06010505070302
52:d=1 hl=2 l= 14 cons: SEQUENCE
54:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Key Usage
59:d=2 hl=2 l= 1 prim: BOOLEAN :255
62:d=2 hl=2 l= 4 prim: OCTET STRING [HEX DUMP]:030205A0
68:d=1 hl=2 l= 51 cons: SEQUENCE
70:d=2 hl=2 l= 3 prim: OBJECT :X509v3 CRL Distribution Points
75:d=2 hl=2 l= 44 prim: OCTET STRING [HEX DUMP]:302A3028A026A0248622687474703A2F2F63726C2E676F64616464792E636F6D2F676473312D36382E63726C
121:d=1 hl=2 l= 83 cons: SEQUENCE
123:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Certificate Policies
128:d=2 hl=2 l= 76 prim: OCTET STRING [HEX DUMP]:304A3048060B6086480186FD6D010717013039303706082B06010505070201162B687474703A2F2F6365727469666963617465732E676F64616464792E636F6D2F7265706F7369746F72792F
206:d=1 hl=3 l= 128 cons: SEQUENCE
209:d=2 hl=2 l= 8 prim: OBJECT :Authority Information Access
219:d=2 hl=2 l= 116 prim: OCTET STRING [HEX DUMP]:3072302406082B060105050730018618687474703A2F2F6F6373702E676F64616464792E636F6D2F304A06082B06010505073002863E687474703A2F2F6365727469666963617465732E676F64616464792E636F6D2F7265706F7369746F72792F67645F696E7465726D6564696174652E637274
337:d=1 hl=2 l= 31 cons: SEQUENCE
339:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Authority Key Identifier
344:d=2 hl=2 l= 24 prim: OCTET STRING [HEX DUMP]:30168014FDAC6132936C45D6E2EE855F9ABAE7769968CCE7
370:d=1 hl=2 l= 39 cons: SEQUENCE
372:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Subject Alternative Name
377:d=2 hl=2 l= 32 prim: OCTET STRING [HEX DUMP]:301E820B6B7468756C68752E6E6574820F7777772E6B7468756C68752E6E6574
411:d=1 hl=2 l= 29 cons: SEQUENCE
413:d=2 hl=2 l= 3 prim: OBJECT :X509v3 Subject Key Identifier
418:d=2 hl=2 l= 22 prim: OCTET STRING [HEX DUMP]:0414A31E1AB1A9E4F550BC3E05E174CF01D09E35E017
-----BEGIN EXTENSIONS-----
MIIBtjAPBgNVHRMBAf8EBTADAQEAMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAOBgN
VHQ8BAf8EBAMCBaAwMwYDVR0fBCwwKjAooCagJIYiaHR0cDovL2NybC5nb2RhZGR5LmNvbS9nZH
MxLTY4LmNybDBTBgNVHSAETDBKMEgGC2CGSAGG/W0BBxcBMDkwNwYIKwYBBQUHAgEWK2h0dHA6L
y9jZXJ0aWZpY2F0ZXMuZ29kYWRkeS5jb20vcmVwb3NpdG9yeS8wgYAGCCsGAQUFBwEBBHQwcjAk
BggrBgEFBQcwAYYYaHR0cDovL29jc3AuZ29kYWRkeS5jb20vMEoGCCsGAQUFBzAChj5odHRwOi8
vY2VydGlmaWNhdGVzLmdvZGFkZHkuY29tL3JlcG9zaXRvcnkvZ2RfaW50ZXJtZWRpYXRlLmNydD
AfBgNVHSMEGDAWgBT9rGEyk2xF1uLuhV+auud2mWjM5zAnBgNVHREEIDAeggtrdGh1bGh1Lm5ld
IIPd3d3Lmt0aHVsaHUubmV0MB0GA1UdDgQWBBSjHhqxqeT1ULw+BeF0zwHQnjXgFw==
-----END EXTENSIONS-----
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