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:47:51:90:56:26
Serial 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.org

Check 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

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uni.ruhr-uni-bochum.de

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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