fia.libf.ac.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:f1:b0:f8:7a:5c:ed:95:a8:55:1b:2b:cc:ea:92:cc:db:3d 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=fia.libf.ac.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f1:b0:f8:7a:5c:ed:95:a8:55:1b:2b:cc:ea:92:cc:db:3d
Serial Number (int): 430692428453682709581070216400227867089725
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 22:82:1c:12:39:2c:0a:36:1e:86:42:68:14:ac:1a:10:71:46:48:6a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6f:49:39:0e:d7:27:e5:c6:68:b0:75:33:8d:37:9e:b5:c6:02:35:98
Fingerprint (sha256): 9f:a7:ec:13:84:32:0a:55:bc:fa:d9:fe:02:d8:ff:50:1c:96:4e:00:cc:ff:67:22:5b:6a:f1:8f:50:14:22:d7

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 fia.libf.ac.uk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for fia.libf.ac.uk

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

fia.libf.ac.uk

Other certificates including the domain name libf.ac.uk

(limited to 100 certificates)

Certificate

The complete raw certificate details for fia.libf.ac.uk 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 430692428453682709581070216400227867089725
 . . . . . . . . [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 2019-12-03 17:50:02 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-02 17:50:02 +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 'fia.libf.ac.uk'
 . . . . . . . . [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 1026760568958753800919494918149383252684063576456858575001496638026951080337981199347054940894317776747773765351669922674938113509445509776453971672282037720539495590013274098532450471459876845274343439878493072805177091020910271764545522365914464819359343578841938266006566986267567556882422715140635819919696602328997143730405184003764245157376739406828168259787255332220076076770877141029414471198840553567100840642234563389206895881447375747583837664588028682939779876718094822703217061579186659057296698187747855880403208208823488439454681695166687199780687309875629702424256998834549870641597276140770058799733373639603227887836116892746126267988155256228168653448792207599783502478211555925097310442256601987386081893392002601736350944602355017625899210099636474267197959587416636163005227079994894823481357125183832696733749281907947459872483993836172200454226208855782402591695014063846924400069983117358343812230093271892294485300274459187031539285100994339824449713039201159880293234197335609764363844184248073019166806974852254346120629145292830080928899151697024188330410272213263327596809794101474768916419729995547210100524023798789797994132003135943075144921979361506713018842729297883803168434705493560596138929575239
 . . . . . . . . . . . . . . . . . . . . [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)
							22821c12392c0a361e86426814ac1a107146486a
 . . . . . . . . . . . . . . . . [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 'fia.libf.ac.uk'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ecd19121a0000040300483046022100ab950548984b2b4ebf934b4a8d3e9d29c0809360b98755f6ee8d7512823fe6c3022100f12e76414841dd354add7e1e0fb8d053000067026b9eb3072c674315fc699e87007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ecd19120d00000403004830460221009d5c8f57ca54fb4a39eca4c771e600a2e52ed9fbdb91d2524d426908e97bc6bd022100ac7fae1563973763f7f1180d4e0cae3b7aca4f82911432bf9533acbd2ee163e5
 . . . . [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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