chat.dks.ruhr-uni-bochum.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:76:6c:dd:1c:7c:fe:49:b9:4f:26:a8:8f:47:51:90:56:26 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=chat.dks.ruhr-uni-bochum.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:76:6c:dd:1c:7c:fe:49:b9:4f:26:a8:8f:47:51:90:56:26Serial Number (int): 301634881790912445112922299580867425621542
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 9d:a4:56:73:80:e4:3f:66:d0:b3:2d:9e:4f:e9:b1:0e:e9:db:2c:7d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b5:67:a8:08:33:96:fc:23:75:58:35:4a:08:d3:e3:19:8b:d0:79:83
Fingerprint (sha256): 00:1f:97:d0:47:89:01:66:b3:3d:b4:3e:1d:93:06:5a:22:36:42:7a:fb:db:fd:14:02:4c:11:1c:f3:fb:df:8f
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate chat.dks.ruhr-uni-bochum.de
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for chat.dks.ruhr-uni-bochum.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
chat.dks.rub.de
chat.dks.ruhr-uni-bochum.de
chat.dks.ruhr-uni-bochum.de
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Certificate
The complete raw certificate details for chat.dks.ruhr-uni-bochum.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFfzCCBGegAwIBAgISA3Zs3Rx8/km5Tyaoj0dRkFYmMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMjMxMDMyMjdaFw0x OTA1MjQxMDMyMjdaMCYxJDAiBgNVBAMTG2NoYXQuZGtzLnJ1aHItdW5pLWJvY2h1 bS5kZTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJ5tJfRKrZqFYkKd x0tH8MHdoE+Su22xLTzfq0srGESIXo0VMXOcy7AStW3gEQRQYMUkDjmXcs1pB+hP BOg8om7RK4esJfVukfczDqN8tKLcS4bdCGmySWlIwB28NX6UMs0CECBgC1SFSOyP 6P1Dz1/tZD7R1/jbheyLijMXznh842ct9oMzEnNx1V189GCE+0eP7IXd5EiSt19u yhEvJwnbUizOlFqv9TC6RQiVTMUQVv8dAy4M4g18eSYtch7nQQkb3RC26P5AUyuy o/KixO3ZIFlllO7KpBjwdsApyGd2HoEwsholEORQcQmFu0yTur642PlP3++dkoTm lKE5ou0CAwEAAaOCAoEwggJ9MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggr BgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUnaRWc4Dk P2bQsy2eT+mxDunbLH0wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEw bwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMu bGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMu bGV0c2VuY3J5cHQub3JnLzA3BgNVHREEMDAugg9jaGF0LmRrcy5ydWIuZGWCG2No YXQuZGtzLnJ1aHItdW5pLWJvY2h1bS5kZTBMBgNVHSAERTBDMAgGBmeBDAECATA3 BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNy eXB0Lm9yZzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2AHR+2oMxrTMQkSGcziVP QnDCv/1eQiAIxjc1eeYQe8xWAAABaRogwpsAAAQDAEcwRQIhAIKaqKW7BkTqLprr l00ylCKiSnlNIrturkpiMV+InLIDAiAfG6KJEwhPn4f0HrFVhjWrvV7HA/JGmJne VYegQsm9KgB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABaRog wuEAAAQDAEcwRQIhALxPyuFN7hmQlfEyeHBE9E2EeTu8udqx7alZYh6TVWhnAiA+ NUALDkmMU9DzHPpLU98+xlka6w7hC1ZIQu7q20XIKDANBgkqhkiG9w0BAQsFAAOC AQEAGDAsMTYpuFeQDIM5DWxhAfA3zdOuVDldB+YGIJcG9fYaWtKqPUuPTY8aifAk rc1ceWmfSrweJ2Qk2q+PBtH4xj7gZuUxGS5CV4SiPqjpBm+kHlfIN68yfg6rNCPs qqnvyky63NLM/kd3JQpiFl3o82udpPON2R2Nj02TII+X1UbYzk4Owot4Y7flHDsU rjqoayxXUoL7+bOlRq/8VCzP0TUHUA6rYAzMKx3h179oqkk8llS/Blm+exYC41LH tV9DIQan9cTQrbOBxiijrLhzws7q1d7k2yKr+fx2rL+f+bCv35RAs+gVDGBNBjHp pIye0SQNbyaxJe7yhy22hiFq8w== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnm0l9EqtmoViQp3HS0fw wd2gT5K7bbEtPN+rSysYRIhejRUxc5zLsBK1beARBFBgxSQOOZdyzWkH6E8E6Dyi btErh6wl9W6R9zMOo3y0otxLht0IabJJaUjAHbw1fpQyzQIQIGALVIVI7I/o/UPP X+1kPtHX+NuF7IuKMxfOeHzjZy32gzMSc3HVXXz0YIT7R4/shd3kSJK3X27KES8n CdtSLM6UWq/1MLpFCJVMxRBW/x0DLgziDXx5Ji1yHudBCRvdELbo/kBTK7Kj8qLE 7dkgWWWU7sqkGPB2wCnIZ3YegTCyGiUQ5FBxCYW7TJO6vrjY+U/f752ShOaUoTmi 7QIDAQAB -----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 301634881790912445112922299580867425621542 . . . . . . . . [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 2019-02-23 10:32:27 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-24 10:32:27 +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 'chat.dks.ruhr-uni-bochum.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 19999475197085220038769705568816193040594659394842000495049961322364789029602496405565240723840210629095338390702831411090863473316454514791238054054570628955986072073091696297964148340439311197555765301867862420241807206454919711476933922724734295346121012966369488140445727520035562216961453003711376487362435040927352397643878390946346828596528700951789281983506784751949927240825666012056005894760290600363163848546983244893954065015384247385567325595724985504912925486870683205819359068168482258790894530989497418613765940584926747919670913530119797018758809805844483682563860866705253093280326627398578899362541 . . . . . . . . . . . . . . . . . . . . [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) 9da4567380e43f66d0b32d9e4fe9b10ee9db2c7d . . . . . . . . . . . . . . . . [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 (48 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'chat.dks.rub.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'chat.dks.ruhr-uni-bochum.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) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001691a20c29b0000040300473045022100829aa8a5bb0644ea2e9aeb974d329422a24a794d22bb6eae4a62315f889cb20302201f1ba28913084f9f87f41eb1558635abbd5ec703f2469899de5587a042c9bd2a007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001691a20c2e10000040300473045022100bc4fcae14dee199095f132787044f44d84793bbcb9dab1eda959621e9355686702203e35400b0e498c53d0f31cfa4b53df3ec6591aeb0ee10b564842eeeadb45c828 . . . . [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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