csi.bbk.ac.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:c8:58:f9:85:1f:65:8f:38:d8:5a:b4:94:8b:f4:c3:f2:83 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=csi.bbk.ac.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c8:58:f9:85:1f:65:8f:38:d8:5a:b4:94:8b:f4:c3:f2:83
Serial Number (int): 329511598825063261855883736476049188582019
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bf:4e:21:ed:27:e7:f8:e0:17:57:fc:8b:87:e8:20:33:bf:43:7b:78
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 79:0b:95:77:d3:2f:11:20:fa:da:a7:fd:ea:9e:9b:f2:d9:50:2c:06
Fingerprint (sha256): 0a:36:8b:88:b7:8e:34:c1:06:a6:ff:94:cc:22:de:ae:c0:f6:40:d2:11:07:b6:6d:f3:da:71:f3:ca:93:fd:98

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate csi.bbk.ac.uk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for csi.bbk.ac.uk

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

csi.bbk.ac.uk

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(limited to 100 certificates)
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vpn.dcs.bbk.ac.uk
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web-test.its.bbk.ac.uk
media.bbk.ac.uk
*.cryst.bbk.ac.uk
www.bbk.ac.uk
eprints.bbk.ac.uk
sd2.its.bbk.ac.uk
fort.bbk.ac.uk
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www.19.bbk.ac.uk
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*.ezproxy.lib.bbk.ac.uk
populus2.ccs.bbk.ac.uk
campaign.bbk.ac.uk
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sim.openlibhums.org
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olh.janewaysharedhosting.com
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cis7.bbk.ac.uk
www.19.bbk.ac.uk
olh.janewaysharedhosting.com
pyrus.ccs.bbk.ac.uk
owa.bbk.ac.uk
lists.bbk.ac.uk
kif.dcs.bbk.ac.uk
fort.bbk.ac.uk
www2.bbk.ac.uk
vpn.dcs.bbk.ac.uk
zendto.its.bbk.ac.uk
puck.mda.bbk.ac.uk
sable.psychology.bbk.ac.uk
moodle.bbk.ac.uk
bisa.bbk.ac.uk
readings.bbk.ac.uk
eprints.bbk.ac.uk
cis6.bbk.ac.uk
populus2.ccs.bbk.ac.uk
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*.cryst.bbk.ac.uk
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pan.dcs.bbk.ac.uk
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briccentre.bbk.ac.uk
www4.bbk.ac.uk
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olh.janewaysharedhosting.com
sim.openlibhums.org
populus2.ccs.bbk.ac.uk
cis-dev.bbk.ac.uk
app5.its.bbk.ac.uk
*.cryst.bbk.ac.uk
jarmanlab.bbk.ac.uk
fryitvpn.bbk.ac.uk
www.cbcd.bbk.ac.uk
*.ezproxy.lib.bbk.ac.uk
www2.bbk.ac.uk
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side.mda.bbk.ac.uk
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outlook.dcs.bbk.ac.uk
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cis-dev2.bbk.ac.uk
sim.openlibhums.org
olh.janewaysharedhosting.com
wiki.bbk.ac.uk
uag.bbk.ac.uk
gandaki.bbk.ac.uk
tyto.ccs.bbk.ac.uk
tyto.ccs.bbk.ac.uk
*.cryst.bbk.ac.uk
media.bbk.ac.uk
side2.mda.bbk.ac.uk
smtp.dcs.bbk.ac.uk
cis.bbk.ac.uk
pyrus.ccs.bbk.ac.uk
zendto.its.bbk.ac.uk
www.survey.bbk.ac.uk
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apw03.its.bbk.ac.uk
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dev.moodle.bbk.ac.uk

Certificate

The complete raw certificate details for csi.bbk.ac.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxTx1pgxJ2Qs7Gog6Zy/y
218tDY2b6PSSkkv7h+r0HdgmxN0bQWuQurfgoCt/7Hs8sbZvTN3AoTUF+dyh96OC
lSP44hrpCo3cL8pdjnXeGsu9o1m8jTfpHF7DpKCuc4lmi48rWVLgA8Ip9tRhmfU+
nr2XRhrrjpKbl4eUld41BWED7rL6CpBNQ3av5MtD2CxGu/mPafJyVsUGzG5/stK0
xVQvMAYCyM0cejNRfg3eZW1ECG9tLGjtmMY8Ob2X4TdgwEQZ/bfslISlKIBDklOn
JY1/vUPnRVpEGDSkt9td29pe4qABUQgbM+/vAPL3TLrTHwsd7uE63Zw6tKxnQ5zW
zQIDAQAB
-----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 329511598825063261855883736476049188582019
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-07 13:25:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-05 13:25:53 +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 'csi.bbk.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 24898759800958829799284912328671969542636211802127256088069406352990789642406191572224250623902516799977495512240894834862415347695593096891417008008202637114584807576429071875985771681500778092643190546921633026728666601203946538834911898170094688460584005887947929671861949864485469571436835359572542166765496343940984568950977409513487753172240271270405429077458118093060077704630710272375631418595841747604099163416440511538592876468746423619389863994280286204723381500109779121062714968473928348276978550612853646698606278425745127611069314761265293066622411799755506929649914981298150328245378008232032061937357
 . . . . . . . . . . . . . . . . . . . . [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)
							bf4e21ed27e7f8e01757fc8b87e82033bf437b78
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'csi.bbk.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018930bec08a000004030047304502210097f72bbf241a3a91890cb0fda225b7a018b0645d8ce287d71f9976fc2d50a05702203e2cc850ef8f93f1d8ab2258f61b8ef9c643052b3abec3db210a370bb27084fb007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018930bec0850000040300463044022075a264a5db07b1fc64a6beb558115ff5523f15a9de748dda54406e96a5145acb02207b5ea9906c0eaaed66457e80b6659193138e0160bd138c53195b28048f7cdd70
 . . . . [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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