chat.ub.rub.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:61:f7:9d:3b:9a:27:7d:4a:38:07:9a:7e:06:3b:84:7b:51 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=chat.ub.rub.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:61:f7:9d:3b:9a:27:7d:4a:38:07:9a:7e:06:3b:84:7b:51Serial Number (int): 381785669032813206755232287140797189749585
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 45:16:9a:e7:69:ec:79:ce:fe:fd:24:b4:7c:01:a2:fe:ba:c0:67:cb
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): ba:c8:2b:b1:4e:b7:60:bb:eb:fa:a4:e8:b4:23:9e:6e:74:e7:ef:ac
Fingerprint (sha256): 00:49:81:eb:46:67:31:67:14:af:f7:a6:3b:e1:f3:be:08:7b:e1:71:12:af:89:28:c0:61:86:80:ac:8e:0c:cd
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.ub.rub.de
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for chat.ub.rub.de
Public Key Algorithm
RSA
Key Size
4096
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
chat.ub.rub.de
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Certificate
The complete raw certificate details for chat.ub.rub.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF/zCCBOegAwIBAgISBGH3nTuaJ31KOAeafgY7hHtRMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNzEwMjcxMzM2MDBaFw0x ODAxMjUxMzM2MDBaMBkxFzAVBgNVBAMTDmNoYXQudWIucnViLmRlMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA7D3yTeJlzix59ZK9rrdtJ22M63DeR4N5 WMzKeVmuY7CF9WuoW+hBlVLNHsThNQexB4Hi7PcoRgqmoV+3EFRyYQbXxNdWQyQZ F3DrbwCqUEkMW0AIPg82S17Q5QgewpzH0tZsm5RhB/0ahR1UO88/OVGrdm+5yfz8 FNpiafmYZP4BjGB+G99YdINq/8SAU+I2Zo2o/2g7Iy0zyG9d8l+03UKV6gjy9B7I l7a1aHq4FHyOlFWX9gawV2nPL2Bddfiar2WfGlvav+leGBcDideMnOsKimWjQnW6 fQQR80Yrlccy3eD7INQZDZX/ZstRLEvvs5y5EkAJaoHHa8Qp1AACVAJH8G8Q0Rd6 Be8qfMkTckHOE1z0Wek5qypMlyG4V28uIlJDyKaahc6IPdJWMR/cTINP61zXV1pO lB23pqlwS5WIDYUcX32GjeImrKxbfaV66zuyq71b3Nf+33wmCFJGgcVOuMzI4yTe SF+jy/cXktpON/HTT80f+oK9pZHrCKPEW59mhZy76YaKhA7Mob7VUctT3w76Hydc 6xfvybU2YlVFMFm/9lJ1lNDhAY77XyFvigPlBGzIfMBglyWylPsA4RKzQ3BIylfx Gt2KmQ2I8QcBjg8FYhOcMotFZ1/Wvm8kLSfWuAW4FB1FSM9GcUTkdFBvfAYAd0bp 1FS4JTWtc5UCAwEAAaOCAg4wggIKMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQURRaa 52nsec7+/SS0fAGi/rrAZ8swHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg5jaGF0LnViLnJ1Yi5kZTCB /gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEwgdYwJgYIKwYB BQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggrBgEFBQcCAjCB ngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVkIHVwb24gYnkg UmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ugd2l0aCB0aGUg Q2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0c2VuY3J5cHQu b3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQBplfrdOGF/tPhEvWNV T7VfdTLP0PfwH5usWTe6gaFKnZKKX5EMnq6VZXg14E2Bg76AMIFXDSPdN0v5EYJ0 USsHZt/lXTJVjB65z8/d2N2VYQ4vnXQRN8cbnPaqoSlwfsOUlfw5bc9gHe1EldOw UW06DrQiDsSmFyCrxHfc3gmItgz1M1laTHEP62ftBl/e+ZpOdXTawFmGWd8wSoqz hlAl6aATsmJ3zAjFZsYwJQB0FbLyL7dx+syBOWcL3VHAVG15CDb4s6CpjEbTdUzu XCQH0I7omItkJTp9sAMhcIwCC6pHjLSc0CgAL2ijPGY9KB7qxDZFCOdlDBm67HsR Tvvt -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA7D3yTeJlzix59ZK9rrdt J22M63DeR4N5WMzKeVmuY7CF9WuoW+hBlVLNHsThNQexB4Hi7PcoRgqmoV+3EFRy YQbXxNdWQyQZF3DrbwCqUEkMW0AIPg82S17Q5QgewpzH0tZsm5RhB/0ahR1UO88/ OVGrdm+5yfz8FNpiafmYZP4BjGB+G99YdINq/8SAU+I2Zo2o/2g7Iy0zyG9d8l+0 3UKV6gjy9B7Il7a1aHq4FHyOlFWX9gawV2nPL2Bddfiar2WfGlvav+leGBcDideM nOsKimWjQnW6fQQR80Yrlccy3eD7INQZDZX/ZstRLEvvs5y5EkAJaoHHa8Qp1AAC VAJH8G8Q0Rd6Be8qfMkTckHOE1z0Wek5qypMlyG4V28uIlJDyKaahc6IPdJWMR/c TINP61zXV1pOlB23pqlwS5WIDYUcX32GjeImrKxbfaV66zuyq71b3Nf+33wmCFJG gcVOuMzI4yTeSF+jy/cXktpON/HTT80f+oK9pZHrCKPEW59mhZy76YaKhA7Mob7V UctT3w76Hydc6xfvybU2YlVFMFm/9lJ1lNDhAY77XyFvigPlBGzIfMBglyWylPsA 4RKzQ3BIylfxGt2KmQ2I8QcBjg8FYhOcMotFZ1/Wvm8kLSfWuAW4FB1FSM9GcUTk dFBvfAYAd0bp1FS4JTWtc5UCAwEAAQ== -----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 381785669032813206755232287140797189749585 . . . . . . . . [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 2017-10-27 13:36:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-01-25 13:36:00 +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.ub.rub.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 963783186283286738907259940036815327681149448596087951035906320815902000780876856347283759716241167317270501167010857999436797270784570929111780971684516030790514357001315093488239644794817183915094845793285655196250637755759815989789623158123015135048863891183179318631414051538737618268682487637110556153580185171627213648687176665209909162423083993044054936675324767158985712025236879845495485203684193376973546125835779232142348886622617465801304597328282368456957877877924091565537002415814230354152146994089252687048207841913051770257255940363176948496228235758092907016546254195133817864528738508913845460884209669730664022279372911541430166228552692630867561162822322913343725613591203779695369225884580466338153023829685469529412955757034037000353929968290497805885781299935490453913261309415865714934264521791472414573684287317965283732510754187759186473658138137797694101564242436978713100156913457421239005669863038870884379494322839416074008879769749329896860404265499684692303131042149647805597416676757136723980544455507882154134753097288856993638223648695390882141233482486075717968233626487303191008203308825204733214231673321784114890683831082885176112952920663354493099709521582682825354101410960077084721681363861 . . . . . . . . . . . . . . . . . . . . [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) 45169ae769ec79cefefd24b47c01a2febac067cb . . . . . . . . . . . . . . . . [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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'chat.ub.rub.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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