www.informatik.uni-ulm.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:a4:50:ee:42:c3:1a:94:07:00:96:fe:c9:12:7f:15:77:0a was issued on by Let's Encrypt.
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=www.informatik.uni-ulm.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:a4:50:ee:42:c3:1a:94:07:00:96:fe:c9:12:7f:15:77:0aSerial Number (int): 404363027262486770248932825934972342073098
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: bd:2a:ee:fe:44:29:6e:5f:e3:09:e0:4e:c3:c3:f2:d1:15:1c:7b:5b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): d3:b0:27:60:f9:7d:27:8e:45:3d:88:55:30:fd:67:89:56:cf:e8:84
Fingerprint (sha256): 01:15:e9:28:26:93:c8:26:07:37:6c:05:b0:73:bb:1f:7c:7f:7d:b3:c0:8b:91:f9:16:37:a7:f8:a8:e9:99:e5
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.informatik.uni-ulm.de
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.informatik.uni-ulm.de
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
www.informatik.uni-ulm.de
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Certificate
The complete raw certificate details for www.informatik.uni-ulm.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFajCCBFKgAwIBAgISBKRQ7kLDGpQHAJb+yRJ/FXcKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAzMDYyMjI1MjBaFw0y MDA2MDQyMjI1MjBaMCQxIjAgBgNVBAMTGXd3dy5pbmZvcm1hdGlrLnVuaS11bG0u ZGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDZxOAz76Iaz8T06/n1 BA35nAfTvsCB9v23GipzxIlbZsL4dPcVxetfOlKlGzgi3Z3YoXg5DYxf43ydM005 1SPBi05zQ+teggmQR9GoxwUJz4LRRGo1f8k1oV/bMgaUmeMxbENeGeoWAddPJqgB h/ISJFEx1UxJisEEHYsPPcg+YK6/HC4zg6QCBENxKkxahyYLJJabVWhncbyz0l8l bQEJb74oXvppW6sCe3+bgHP3Iccx2lOrZahlTJtmY2t5yOAh7AQ3fszvXpgjigp1 ZdSBHZXcc+d/iwK5CKZc3dm8hvs0y1k9YHPu6sSeK2OWWXNCPyXVLb15ld+jnGC1 ot2pAgMBAAGjggJuMIICajAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFL0q7v5EKW5f 4wngTsPD8tEVHHtbMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wJAYDVR0RBB0wG4IZd3d3LmluZm9ybWF0aWsudW5pLXVs bS5kZTBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkC BAIEgfUEgfIA8AB2ALIeBcyLos2KIE6HZvkruYolIGdr2vpw57JJUy3vi5BeAAAB cLIq5c8AAAQDAEcwRQIhAMhH7/ueoiI/AeGx/MPhF4zA+lmQeSKNupWp1+EicsAj AiBttb/Kf41GuQo4qXcSz3qPYX65Ql9yBWeqOhtj06G5IQB2AG9Tdqwx8DEZ2JkA pFEV/3cVHBHZAsEAKQaNsgiaN9kTAAABcLIq5gcAAAQDAEcwRQIhAIXqZQvZjOz3 v5Phnp2jhUx54fpJ2LbkyZcyolIEKsebAiA93XLnmFuLnA3yzN4A3UINosaxzGjK gwYEfGTKgS/RcjANBgkqhkiG9w0BAQsFAAOCAQEAfTmUJSl/faGqvhJpxpIKbJeB 3qVu6iJA1828Jv9d3XleBK2MeiEmMxlbX+AANv+bGTzV8Z7fsZqNKwFcsECeJquJ mPmdEsHVAhwvFWc8nsZz+H8mW4er1PwqC9KdaV9ZXhldpoid1lXWikiDJcYMCNTF 6ntjQNVGm08RSzi8qyAH98++yebTIq6/A2cB/J3TVWsEnedJOe0lyo280yLcrBcj PZQDfQtt96UqZtM7EIasZfnd43E1v9HcHcsVtcLLqdFy+7jXSAKIqovWJU89/5QD xz9pch+yYeE0EnRtxdMfoWOiO8xyazHd4xxbW39N9b+kc7pTDh6ARzvBDUD+Dg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2cTgM++iGs/E9Ov59QQN +ZwH077Agfb9txoqc8SJW2bC+HT3FcXrXzpSpRs4It2d2KF4OQ2MX+N8nTNNOdUj wYtOc0PrXoIJkEfRqMcFCc+C0URqNX/JNaFf2zIGlJnjMWxDXhnqFgHXTyaoAYfy EiRRMdVMSYrBBB2LDz3IPmCuvxwuM4OkAgRDcSpMWocmCySWm1VoZ3G8s9JfJW0B CW++KF76aVurAnt/m4Bz9yHHMdpTq2WoZUybZmNrecjgIewEN37M716YI4oKdWXU gR2V3HPnf4sCuQimXN3ZvIb7NMtZPWBz7urEnitjlllzQj8l1S29eZXfo5xgtaLd qQIDAQAB -----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 404363027262486770248932825934972342073098 . . . . . . . . [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 2020-03-06 22:25:20 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-04 22:25:20 +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 'www.informatik.uni-ulm.de' . . . . . . . . [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 27490795249242976763044218870431424139812864625032452530066803796929143041317297363108229976240507330216313591835919739870940704030873563633372779700386605385777168887299779926851886868164540935355307299875024283480808179144653153721756523840016492615245702969995265859870220732387009293763217791662615344509494504243213259176618964902507226225180497003775364028117011914569719752057595337602211671595491004835708661804417067146688324160050125014244495553067334350711675909057575823474986412158986711373524722051810171300700300106430462157021405944919685576697196293378689807762900108412785299903490391541350221929897 . . . . . . . . . . . . . . . . . . . . [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) bd2aeefe44296e5fe309e04ec3c3f2d1151c7b5b . . . . . . . . . . . . . . . . [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 (29 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.informatik.uni-ulm.de' . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170b22ae5cf0000040300473045022100c847effb9ea2223f01e1b1fcc3e1178cc0fa599079228dba95a9d7e12272c02302206db5bfca7f8d46b90a38a97712cf7a8f617eb9425f720567aa3a1b63d3a1b9210076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000170b22ae607000004030047304502210085ea650bd98cecf7bf93e19e9da3854c79e1fa49d8b6e4c99732a252042ac79b02203ddd72e7985b8b9c0df2ccde00dd420da2c6b1cc68ca8306047c64ca812fd172 . . . . [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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