cirg.cs.up.ac.za
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:d8:73:ef:b6:a1:a1:88:fb:2d:8a:84:e2:e1:29:a9:0e:36 was issued on by Let's Encrypt.
With 7 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=cirg.cs.up.ac.za
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:d8:73:ef:b6:a1:a1:88:fb:2d:8a:84:e2:e1:29:a9:0e:36Serial Number (int): 334991954932872177913195122005736335937078
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 06:4f:07:14:ec:ca:64:bf:5e:05:bc:6e:80:ce:81:9e:2d:4a:f3:7e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 92:95:38:dc:b5:cb:a9:20:bf:f5:dd:79:5b:35:d4:ff:b8:a3:b2:3a
Fingerprint (sha256): 06:4a:27:69:cc:db:c3:49:6b:ec:32:aa:a4:ec:0b:b4:7e:ec:b6:22:0b:0d:e8:ea:a2:41:6d:7d:49:e0:3c:95
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate cirg.cs.up.ac.za
7
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for cirg.cs.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
cirg.cs.up.ac.za
cloud.cs.up.ac.za
csedar.cs.up.ac.za
ftp.cs.up.ac.za
infpostgrad.cs.up.ac.za
inlpostgrad.cs.up.ac.za
javagently.cs.up.ac.za
cloud.cs.up.ac.za
csedar.cs.up.ac.za
ftp.cs.up.ac.za
infpostgrad.cs.up.ac.za
inlpostgrad.cs.up.ac.za
javagently.cs.up.ac.za
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Certificate
The complete raw certificate details for cirg.cs.up.ac.za in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF2zCCBMOgAwIBAgISA9hz77ahoYj7LYqE4uEpqQ42MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAzMDIwNjI2NTNaFw0y MDA1MzEwNjI2NTNaMBsxGTAXBgNVBAMTEGNpcmcuY3MudXAuYWMuemEwggEiMA0G CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC1nDygQi+fD0wmR4wZAZm0BqP9M8NQ rScz1/PuTgz+KO1yvazyNkUWoYVIS0ybi2q1V65h6F4P9yz7nT7VMmjJBgAHtFLi LweVV8kzrzPOxLf3KSQzDxzsdoGvYeSt6nuk+QaTvU1X8K2bfcaHcFfxr96PJdve +Mbz50zOHwpSJrlLTBCRzSEBbp7gP+V8EqaqX6xzlUk0fUrJ5eBhXVjM+MyvDZyA Mpb8/B/FJT/1+p6MHf52AvhXExGamHn4qoUtVWh5CZIxOzVh2PXup7edvK5u7x2R Pd7gaRzOXUpBzhFkCCX9Cjr7f/2RrEvtQJAQD2xW94truj4ngUjaf4tTAgMBAAGj ggLoMIIC5DAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsG AQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFAZPBxTsymS/XgW8boDOgZ4t SvN+MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEB BGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZy8wgZ8GA1UdEQSBlzCBlIIQY2lyZy5jcy51cC5hYy56YYIRY2xvdWQuY3Mu dXAuYWMuemGCEmNzZWRhci5jcy51cC5hYy56YYIPZnRwLmNzLnVwLmFjLnphghdp bmZwb3N0Z3JhZC5jcy51cC5hYy56YYIXaW5scG9zdGdyYWQuY3MudXAuYWMuemGC FmphdmFnZW50bHkuY3MudXAuYWMuemEwTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYL KwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlw dC5vcmcwggECBgorBgEEAdZ5AgQCBIHzBIHwAO4AdQDnEvKwN34aYvuOyQxhhPHq ezfLVh0RJlvz4PNL8kFUbgAAAXCaI/mxAAAEAwBGMEQCIHKA0QQDSaamkgM+dyhJ lBoDGTrnt1BDH6avsMKudItcAiAeQd9VNherUTlZTB7GUKEKy2zS+ZCgqRqMlrse QCcA+gB1ALIeBcyLos2KIE6HZvkruYolIGdr2vpw57JJUy3vi5BeAAABcJoj+bIA AAQDAEYwRAIgV2ODJE840maSSjYwyFViWTJI4hg1qruAfnSsu/99F8ACIH46x8XC VJu3LI2xtN69O4bZkteJKZFgINwZaImYuWuTMA0GCSqGSIb3DQEBCwUAA4IBAQBf DKp9gZjiNRHnCR7G2g3wuG8vssCF/pN1PtfqSQS49AZd+9XD0hneJIx1J/ugSB23 6g3LScy13wBGpRCBg2yyUPEGtvLZay9LWaLcenarL6JekPozIiF5Q5KoMjgbUxMV NaR8IC7YWT96HQIyKh35Ci8AyIrAdcBdgWy2BemSpOm8yU7DnoSdOna2wMrMP8yU YD05cH6b/UhLeKfk873bVdn9k3tVzwiAsrWEw4R45lYxTw3uZPmU4N8FCaX3pgFA 4WHwNDK2pusG/MNAlTlhElBdtMLul4qCDYpesYEVJQnsDJMBhqpqtqp2elYJp9zR fJfJ+aFxdPbFqMoFz741 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtZw8oEIvnw9MJkeMGQGZ tAaj/TPDUK0nM9fz7k4M/ijtcr2s8jZFFqGFSEtMm4tqtVeuYeheD/cs+50+1TJo yQYAB7RS4i8HlVfJM68zzsS39ykkMw8c7HaBr2Hkrep7pPkGk71NV/Ctm33Gh3BX 8a/ejyXb3vjG8+dMzh8KUia5S0wQkc0hAW6e4D/lfBKmql+sc5VJNH1KyeXgYV1Y zPjMrw2cgDKW/PwfxSU/9fqejB3+dgL4VxMRmph5+KqFLVVoeQmSMTs1Ydj17qe3 nbyubu8dkT3e4Gkczl1KQc4RZAgl/Qo6+3/9kaxL7UCQEA9sVveLa7o+J4FI2n+L UwIDAQAB -----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 334991954932872177913195122005736335937078 . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-02 06:26:53 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-31 06:26:53 +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 'cirg.cs.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 22926176446412968782992264734875616468071548378480346360651555832369486074587304455403688404622003153967152386426734844329099746645828007647197980203202529841944578424356285895540014766376866404903649417566080378412758009053423928237598462432135073788559268439492698745670667269400564307185743894491317514173672371174819896059580293962043532097546902404511360882268982314808834846939255956971547104004674584299770918962559220707512615507529310375571173202245032019395785467638416743122819982839348864857438726105745244900956566832449824253203726627369774968601507456192700516696285248072479331276008624906060731222867 . . . . . . . . . . . . . . . . . . . . [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) 064f0714ecca64bf5e05bc6e80ce819e2d4af37e . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (151 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cirg.cs.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cloud.cs.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'csedar.cs.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ftp.cs.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'infpostgrad.cs.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'inlpostgrad.cs.up.ac.za' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'javagently.cs.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 (243 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes) 00ee007500e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e000001709a23f9b1000004030046304402207280d1040349a6a692033e772849941a03193ae7b750431fa6afb0c2ae748b5c02201e41df553617ab5139594c1ec650a10acb6cd2f990a0a91a8c96bb1e402700fa007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001709a23f9b200000403004630440220576383244f38d266924a3630c85562593248e21835aabb807e74acbbff7d17c002207e3ac7c5c2549bb72c8db1b4debd3b86d992d78929916020dc19688998b96b93 . . . . [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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