library.up.ac.za
Issued by R3
About this certificate
This digital certificate with serial number 04:49:1b:86:00:1d:94:1d:8d:68:78:1d:3d:63:95:e0:a8:29 was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=library.up.ac.za
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:49:1b:86:00:1d:94:1d:8d:68:78:1d:3d:63:95:e0:a8:29Serial Number (int): 373326341438278187035789354524258091444265
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 8b:02:70:42:a8:02:ee:19:89:af:ad:72:1a:63:d5:56:66:6b:15:92
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): d2:0e:d9:78:2f:69:58:8c:29:5a:02:34:81:5e:17:78:dc:e6:70:9b
Fingerprint (sha256): 22:4c:fd:5a:4b:9d:62:f0:34:4d:90:d4:cd:42:47:ed:f0:35:66:6d:09:20:d7:56:0d:24:f4:a2:68:44:1f:3e
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate library.up.ac.za
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for library.up.ac.za
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
library.up.ac.za
www.library.up.ac.za
www.library.up.ac.za
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Certificate
The complete raw certificate details for library.up.ac.za in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFOzCCBCOgAwIBAgISBEkbhgAdlB2NaHgdPWOV4KgpMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA0MTcxMjE3MzhaFw0yMzA3MTYxMjE3MzdaMBsxGTAXBgNVBAMT EGxpYnJhcnkudXAuYWMuemEwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB AQC1kgSwdqISVRGLauvGyM2Chcf8RpHls6EauTaDJkX5eZJRdI9G2Aaj6JAtWFIE IKhzAeqZKBFoQgldS/2bEkts24rflST7zK75sptWj3kVdx27Zopi8OaLhWJr95bB ESMiBgV9oZmWaP256WSMen3M0O7paJNKXcGoh+6JGxCXaN2HnQmpxTMe90gpWieA As4xH+0R2ndLo0isO6T8zV0o2PRetPkAK+2JHucLUtn9DpczwE4hJKFtzUknNYu0 WhgIobYysP7VzMgiPw5a+o3kk4K49jk+oZZiEQHgoFZluxaq3It0aYUW3Oj3GURT smRnc9OGMAXbrg6dUJ8nhg2fAgMBAAGjggJgMIICXDAOBgNVHQ8BAf8EBAMCBaAw HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD VR0OBBYEFIsCcEKoAu4Zia+tchpj1VZmaxWSMB8GA1UdIwQYMBaAFBQusxe3WFbL rlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDov L3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5v cmcvMDEGA1UdEQQqMCiCEGxpYnJhcnkudXAuYWMuemGCFHd3dy5saWJyYXJ5LnVw LmFjLnphMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYI KwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBAwYKKwYBBAHW eQIEAgSB9ASB8QDvAHYAtz77JN+cTbp18jnFulj0bF38Qs96nzXEnh0JgSXttJkA AAGHj10kAAAABAMARzBFAiBBI0kTBzGPF3/ex3uQ3D037JEqdNZgAVjIgEyCLA5a iAIhAI0eKO4satG7ffU1TcT1AykMz0qKhkno2xgdNUboJotTAHUA6D7Q2j71BjUy 51covIlryQPTy9ERa+zraeF3fW0GvW4AAAGHj10kBwAABAMARjBEAiBxEd2u/Kyh LBWW+c8jgw2h1f+yC0SijlWRm6nDSwEI9AIgRPgmGmCpJBpayAbZ8joCvI7auLZB 9l24IS9Wp/7OffAwDQYJKoZIhvcNAQELBQADggEBAHazOCJBVU5p2AwNH6wOIUHM wVcag2XDLIxpopEw1NBBcGY+77OYol8Vugf49PVKLJN7jm9imvBkXsLyjsvjPkYR reOGViEILO/d4dFTc5rj0//Iwmlk6X3PrkYjt84y9NbBLzDCZG1QFGnFAoEgtdZo sVNTrndTt5Q7Afi7sY3cIyupiUsTBfagKf0iiEFB1ctkWo95R1QggnUO1o9JWUnx 6A3syaww5cb0ryO8uOa6/jWkcXwPpYs81Dyabzq5OGdlmHxVhyQMpSPVGmUOfNge Rv3oTs1+FLoPS6+9aFpBS3U8A13+0DTcyKcTUPcKeJw4PFmIag62aW9VHXf7yLw= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtZIEsHaiElURi2rrxsjN goXH/EaR5bOhGrk2gyZF+XmSUXSPRtgGo+iQLVhSBCCocwHqmSgRaEIJXUv9mxJL bNuK35Uk+8yu+bKbVo95FXcdu2aKYvDmi4Via/eWwREjIgYFfaGZlmj9uelkjHp9 zNDu6WiTSl3BqIfuiRsQl2jdh50JqcUzHvdIKVongALOMR/tEdp3S6NIrDuk/M1d KNj0XrT5ACvtiR7nC1LZ/Q6XM8BOISShbc1JJzWLtFoYCKG2MrD+1czIIj8OWvqN 5JOCuPY5PqGWYhEB4KBWZbsWqtyLdGmFFtzo9xlEU7JkZ3PThjAF264OnVCfJ4YN nwIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 373326341438278187035789354524258091444265 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-04-17 12:17:38 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-16 12:17:37 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'library.up.ac.za' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 22921137514911636541195503550320948694376159281927100848543317472882605163581845639620325748709715881354357098531036151208355410011232927427308041968629452436179913803652793646524273322860351233203798958138393068611224836268204561847416314270229311107519803642641812582146328406235364326511467784333469317722525200741620095556753628353949638101387575462492984076997942679167324181808406955861666400417364948991502064396113766174299829424196193048000011003654673996799308863134320035568914363124857887408363920396252200650971134732232561326219927859229114299620342893905509888172239871651173682552519809027116703813023 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 8b027042a802ee1989afad721a63d556666b1592 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (42 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'library.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.library.up.ac.za' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001878f5d2400000004030047304502204123491307318f177fdec77b90dc3d37ec912a74d6600158c8804c822c0e5a880221008d1e28ee2c6ad1bb7df5354dc4f503290ccf4a8a8649e8db181d3546e8268b53007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e000001878f5d2407000004030046304402207111ddaefcaca12c1596f9cf23830da1d5ffb20b44a28e55919ba9c34b0108f4022044f8261a60a9241a5ac806d9f23a02bc8edab8b641f65db8212f56a7fece7df0 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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