mail.biba.uni-bremen.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ee:60:29:3d:55:41:54:11:35:d1:cb:1b:53:bf:53:1b:42 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=mail.biba.uni-bremen.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ee:60:29:3d:55:41:54:11:35:d1:cb:1b:53:bf:53:1b:42
Serial Number (int): 342451881138212243889031014770357862341442
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 15:9e:fe:77:dd:49:34:69:a5:27:82:ea:02:43:42:68:cb:a1:c3:eb
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b9:ce:79:ea:97:d3:f8:15:ce:e4:ba:c5:c5:91:46:de:44:6a:91:07
Fingerprint (sha256): 01:9a:58:a8:ae:4f:64:44:cd:1c:26:27:14:08:37:ac:bc:f9:84:94:a2:57:73:48:9f:bb:be:1c:83:36:f9:3a

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 mail.biba.uni-bremen.de

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.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

mail.biba.uni-bremen.de

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Certificate

The complete raw certificate details for mail.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 342451881138212243889031014770357862341442
 . . . . . . . . [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 2017-11-11 18:21:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-02-09 18:21:17 +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 'mail.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 693963298518291355199004125397669097210016986503706582876248063513056657722385862074202607287729545766033528053053375617341474884806510848578764247983927188353564900374342670075822990210850114930907582007266233515927905526139012811410730820224225103227698351852912292574891062593773239477422434753141167115927007828901435974697892618094148586159730006359253256600338823471129024033974800029616766303947955283036394602992972388627800479824317369029897308364236408818089484044839046937707971683254266279648972444238419667527811043333285441253251636539663216958194929372809741363685795744366118433738647531356629071481432773621540140411092570387180665676842972281831435016588895758060060065461555910374978957476189974981066804657354944404126952318297512702400837477970182366359025374727868489664524818569650616638093610083423790771659092922315949776247114998732014532375148944865546207975361076186447448730010205832955703014857082394095792595886085636943061439712209214231900017435477895204612040877444084115800567587200210966997855189462566372957587714210534843891145265137212047489064235446685623807391238295919048299852896978700095367362254275472762929736134315972326287695913748625267494072990011971609539761389999297523594363607197
 . . . . . . . . . . . . . . . . . . . . [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)
							159efe77dd493469a52782ea02434268cba1c3eb
 . . . . . . . . . . . . . . . . [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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.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)
		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