ikap-web.biba.uni-bremen.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c3:11:a2:8c:71:3e:c2:31:cd:ba:63:cb:1a:ca:49:49:9d 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=ikap-web.biba.uni-bremen.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c3:11:a2:8c:71:3e:c2:31:cd:ba:63:cb:1a:ca:49:49:9d
Serial Number (int): 327715360221392716239899562747782108891549
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 24:03:d4:aa:a9:e1:ea:81:2b:91:c5:90:94:1a:6f:e3:62:8f:3c:7f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 3c:c5:0e:83:85:88:b2:a1:87:f6:f1:e3:08:e0:58:4a:7f:c6:51:34
Fingerprint (sha256): 06:ac:3c:7b:46:9e:51:bf:32:f1:d3:b5:12:9c:f9:48:4f:c5:8e:a1:46:11:ef:41:52:1f:bd:27:10:de:64:e1

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 ikap-web.biba.uni-bremen.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ikap-web.biba.uni-bremen.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

admin-wiki.ikap-web.biba.uni-bremen.de
ikap-web.biba.uni-bremen.de

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Certificate

The complete raw certificate details for ikap-web.biba.uni-bremen.de in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 327715360221392716239899562747782108891549
 . . . . . . . . [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 2017-11-21 10:18:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-02-19 10:18:52 +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 'ikap-web.biba.uni-bremen.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 814151269116635398169662722479286137936945749789584691313027596460364147507203924319799865368142818795274062448635267774661776147610966603059296798874507265287444526274233213416285904200594997161799873841305961899029602095115027798242677160180532666969269418865340041976704701554473111388520585960887237219923470210317661027562304286283184918336823789059295667514146333480230092211244962865117523303651275640054492520346977487307140334179394708036787895311620997127796219304645627172288315443297396926096980141529256464883199007275938255653363019885953264173085881178942608759728738084613453240103217151556811476646699591587596364813458557734080132234529484902643417011874631850799752691579683190846680160832425689512772824219854592264747240498000823057164344815332717024710671247354866485822600875838984433642179460791786207657085183919582327392458434804535669903598251047708971306651783083169679441422553866608501091752163622433294954198820678263413526227247302855736223885015710149650255435508554630341686450499097405259236648446650491853036423931206200404776953327938617788123761087191001254843216062693192281682783755912067489976679563689560435149406091141716648656348116176000761707862178658394581987455511871362196433695410449
 . . . . . . . . . . . . . . . . . . . . [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)
							2403d4aaa9e1ea812b91c590941a6fe3628f3c7f
 . . . . . . . . . . . . . . . . [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 (71 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'admin-wiki.ikap-web.biba.uni-bremen.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ikap-web.biba.uni-bremen.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)
		00867117260566cd63a80ae48e746b6c8876d7cabd5011aca585981838ee3cdc89f3d0daf4103b609c7253b261c648e59fde1b9ab630b6dddce38132313e80bfebd529ae1fe7885b2eae1481f066463b16d9621677b0e3f3b0123d7127d5d2714caef9388a5c7f86c5a3fbd7e09f157735b172f1bb36f9dcd975ff1bef47c17ea5caf93f686f33067b0cb0f511d0b4ff46f91bd4d597059e0011d1c7ddedecc789230b968d16d7aaf05452adae7db1e088d46c3231a25d592127f00cdb905187482f5e24c97f9c25e62dcab45a0da235c77d769bdc2da2d804ff348afacde712b26c7c9f9e8ccd9719d13e4046ca35e9e9d03c4ca85395929e87370b916d856ba1