ir.lib.uwo.ca

Issued by R11

About this certificate

This digital certificate with serial number 03:88:b1:58:c9:0e:52:d3:7a:a9:bb:7d:10:68:d6:a2:ee:43 was issued on by Let's Encrypt.

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=ir.lib.uwo.ca

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:88:b1:58:c9:0e:52:d3:7a:a9:bb:7d:10:68:d6:a2:ee:43
Serial Number (int): 307850994051805010187824395204816749653571
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 41:72:c4:c7:40:93:7e:d8:3e:40:93:1c:ee:da:9b:b6:3b:98:db:41
AuthorityKeyId: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (sha1): 2e:09:dc:b2:b9:5d:f2:b6:43:ec:87:c7:77:97:22:f9:fb:d4:bd:d0
Fingerprint (sha256): 07:e1:80:dc:93:81:95:62:78:1f:00:5d:11:c0:60:98:d7:2c:8a:0e:21:cc:8d:ba:59:43:fb:c1:11:b9:44:c2

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation information

OCSP Server: http://r11.o.lencr.org

Check the revocation status for certificate ir.lib.uwo.ca

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ir.lib.uwo.ca

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

ir.lib.uwo.ca

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Certificate

The complete raw certificate details for ir.lib.uwo.ca in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxgi2eV5Bid1zOUlbtR9o
BlJ8svIFNltZXNYm+r83RIzhFx/iLaN806cfHbAATUMbT12jAYnj4w59H/iKO5LC
VgL+Frwpo0w2p46vVFgLBJbiRRVSr5msXHCdceFQCh9CGRf2STpOJhPI6VIjVPti
t46TG7JYg0WqMt7S4cPmXvbKmcoNybRmFdXHGPNsUniBYt4q551LyWPQ9GHdAAr/
ta6kg9U6Z7waAity/Bpin1JFOY9XP+jH8/TTZC1QMRFrQlLUyt/yix5GLjs1B5U0
hlsH+MwN8GDy6zoxYzbyb9e87geZ21RXCDeBvEQwqMP+5aIU+RuQj2HXvr0YZCvQ
CQIDAQAB
-----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 307850994051805010187824395204816749653571
 . . . . . . . . [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 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-16 11:12:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-09-14 11:12:50 +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 'ir.lib.uwo.ca'
 . . . . . . . . [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 24999480819878700600606241935337434236069672510049867176120823732269713520910650684455618757159974013064766693393560250257432994445680011852392698752401942953346704883253362941294264908401232554004144715874959032991642571948144515664664747511457608444885283390748581317006995006258503623008103377421713667243794326963033345446187219266683275201843168846869063777349228503534185961059426189057971063322103264631143977553919669885673568049551595740241648404140530318379235711502403435625545836109918480358406202410919955597675792883416676716061004137194507207563339544216362440927067153218568621253428471166539750166537
 . . . . . . . . . . . . . . . . . . . . [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)
							4172c4c740937ed83e40931ceeda9bb63b98db41
 . . . . . . . . . . . . . . . . [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 c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [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 (75 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://r11.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://r11.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 'ir.lib.uwo.ca'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076001998107109f0d6522e3080d29e3f64bb836e28ccf90f528eeedfce4a3f16b4ca0000019020f6ec8f0000040300473045022100d3b0ae012bcf4d60763302bb746e7c71be9683188682b47e72ffb83e0015fe3f02203849a444bb33df8dced689b29023b94586ae03e09da08d391dc6f755b658d75700770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000019020f6ecdd0000040300483046022100bd29a4618011d7622e492e664d2c66f5c120c9ed07bc104cc920fdae22b28838022100b2794ce0cad5bca823c503f84b70f1b1e164238796c236244edaa55651f2ad46
 . . . . [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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