mentoring.kcl.ac.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:7b:33:42:d7:c6:1f:ec:12:81:67:f9:63:8e:e7:2a:69:5a 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=mentoring.kcl.ac.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:7b:33:42:d7:c6:1f:ec:12:81:67:f9:63:8e:e7:2a:69:5a
Serial Number (int): 390372012554109231992753341444949260527962
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 5b:a3:c0:1e:91:42:88:2c:53:1c:ce:1b:60:a1:21:ae:5c:ca:5e:91
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e9:ef:9d:b7:87:29:85:4b:3e:10:3a:93:0e:9f:bd:2d:b3:98:b8:99
Fingerprint (sha256): 07:e0:3f:fd:86:b4:45:b0:5f:0d:44:c8:25:a9:97:28:58:be:ac:df:fc:44:fd:f1:53:c5:41:78:b8:6f:fd:d0

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 mentoring.kcl.ac.uk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mentoring.kcl.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

mentoring.kcl.ac.uk

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www.isd.kcl.ac.uk
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accreditation.lumanity.com

Certificate

The complete raw certificate details for mentoring.kcl.ac.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnSyjw087Ly1JfqL8Wg7k
i4zsrpolxAave6rEFGxSC0J8VOlaSIhBjuvThihQsceJJ0RMb+YBdj0kniCm93wy
VP03DSlTuKvS9wzFDl19zrYkWn+ydUhPx+U3lYNry22NSFmvLNzzTIfmISu4P/0X
b0z64/HoQcKfo3LeD+XMDSxEVs3UJlBjMzn37nYJsmMSlT2ldMghMool5fUcZZOZ
46LNYhQ6kPBMlWW5XUcIUN7tTAEljubXi0yFuJBbO9ygK8WoNkyBPJmj6Yne4RQJ
FO1KGP7EyT9ysH6+P2bqXEcn530nmMSw+UjRdGon63Ysnzbx2D/IlXjX4PJlQJ31
2wIDAQAB
-----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 390372012554109231992753341444949260527962
 . . . . . . . . [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 2018-11-29 11:05:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-27 11:05:49 +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 'mentoring.kcl.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 19841426535639672751956122905518754631462233013932567114822327849693301344770255258071302366978212753916608813835604909177949446658781688673113993788220074121637154719629252767058173052262307710929135386098051931935453949792766293654819060064929717467850946980164974825571598190632483737633299972130823891669169129805745634052019232527188042361965528285502833382307497370979585246009818194620140572920405131871703849635556713329444862898937489979998703395401904967944712841693589123637477608468001907456318296964337649830767717799015042462153793514088148981229474464604324346499582660910320128205220790583237835355611
 . . . . . . . . . . . . . . . . . . . . [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)
							5ba3c01e9142882c531cce1b60a121ae5cca5e91
 . . . . . . . . . . . . . . . . [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 (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mentoring.kcl.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076005581d4c2169036014aea0b9b573c53f0c0e43878702508172fa3aa1d0713d30c000001675f5c65d10000040300473045022100c1da060610432de717ec98657362ebe2618c37d5990bd120add7d1578f9f9c7f022003ea2ed1b3d4151c6ffc40a00d0ec16ec6460a2a20f7c3292d911397df80c6f900770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001675f5c652b00000403004830460221008cf746b46db7c6d0b00bc318483a1382aae45d0d664da66c0e9c982c8464cf06022100b2f79d03524cdb54bc93de5abbe59c6d949d68e91fbd79b76007c3e38da52c12
 . . . . [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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