askus.library.uni.edu

Issued by R3

About this certificate

This digital certificate with serial number 03:29:76:72:bf:5f:84:c2:85:2c:cd:86:85:01:6c:f6:9b:66 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:
  • 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=askus.library.uni.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:29:76:72:bf:5f:84:c2:85:2c:cd:86:85:01:6c:f6:9b:66
Serial Number (int): 275445879545891706903353153586010187537254
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 81:c5:f1:df:09:08:ea:62:07:d0:94:b9:13:6b:e1:35:30:9b:9f:b6
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): fb:3d:8d:68:ed:cb:18:3a:1c:40:48:27:c8:0b:39:a2:37:42:db:24
Fingerprint (sha256): 0b:99:71:be:fd:72:40:5b:2a:d5:13:75:ad:6d:c8:f8:bc:06:12:28:6a:b9:87:91:61:9b:d2:7f:77:b7:62:49

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

Revocation information

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

Check the revocation status for certificate askus.library.uni.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for askus.library.uni.edu

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

askus.library.uni.edu

Other certificates including the domain name uni.edu

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askus.library.uni.edu
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www.ir.uni.edu
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askus.library.uni.edu
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Certificate

The complete raw certificate details for askus.library.uni.edu in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE9zCCA9+gAwIBAgISAyl2cr9fhMKFLM2GhQFs9ptmMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEwMTAxMjA1NDlaFw0yNDAxMDgxMjA1NDhaMCAxHjAcBgNVBAMT
FWFza3VzLmxpYnJhcnkudW5pLmVkdTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC
AQoCggEBAK42Ecu062y1tnHSDgU1VVkhnUkdx3Boi32i1NsRgpmHBuRdzZC7+tFi
CK1YoSPE05hY0ps1A68q6SZDs3kwplunH046ZACgQynRTYwEmR4HyNjLECpLMug0
pdKv+MY7iLoW4yp59SR9q/0PdK1CjrTKG5PV0LoSV+FDXw7PMRu0IKwUdp5HPC0J
3OqFoBhKq5XP9ZPAbqzi5q/+lQz1cYU/cwW6YRt4E9pA4EcREBn1vp0Jf9gJvxtD
Pcj4EyO5FQuu2FS3zWjPu42amwLPm3r1QCMzYk75zZKSZTjoeSp+Fn80zdQ5M1RO
zywdtXxt/EuLMdwmiDBXNPV8WNZWXWsCAwEAAaOCAhcwggITMA4GA1UdDwEB/wQE
AwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIw
ADAdBgNVHQ4EFgQUgcXx3wkI6mIH0JS5E2vhNTCbn7YwHwYDVR0jBBgwFoAUFC6z
F7dYVsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVo
dHRwOi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxl
bmNyLm9yZy8wIAYDVR0RBBkwF4IVYXNrdXMubGlicmFyeS51bmkuZWR1MBMGA1Ud
IAQMMAowCAYGZ4EMAQIBMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYAO1N3dT4t
uYBOizBbBv5AO2fYT8P0x70ADS1yb+H61BcAAAGLGbGRaQAABAMARzBFAiBTDKIg
tCyIYV1w6C4PaQq30oaUNDWPuzhh3iLiMUp0+wIhAMdvRbz9OQZB1I8lJnyktNAj
ZVxRM+VUhNEgOpAV9AeuAHYA7s3QZNXbGs7FXLedtM0TojKHRny87N7DUUhZRnEf
tZsAAAGLGbGRegAABAMARzBFAiBDIa/beWf7KDIWkGV7jmy/ml+Jt+Vh2J/tO6uW
3Yh/lgIhAIwZosDz/UHLIprHVmpfAAhSekEr9qqLmbWtCDDseOvqMA0GCSqGSIb3
DQEBCwUAA4IBAQC5oYBvEZ7jIUlt2e1OQej+Ag+rhBg4FkGwtkOzlh4QuOHHau6l
T5gZHs41iFmq4uXAnFkK3skk4udCLt1q025y7OM+kZyO0AIlRmMb2WbKNYUL8MIb
Rbwqwp8OPIhteEtfQe3usH5rY8YRDqiL2dRqgq7lsd8QOfx8bz6fsZiuT9iLEFTf
tsYH0aSVFXigo+8LJHySvB/TUvmCxoXRmRkKnVp1e41z1Op/uNtwGtmUBovMAo42
XAYlx5s/xxUMaMxKr2yjoxRmvo7rI+6o4dszBRoduTi9bHCjm4IMmHdoVbPSX38H
jW8YScXc1fCdmImJ01MBPsNclZvu2MgxlVIj
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArjYRy7TrbLW2cdIOBTVV
WSGdSR3HcGiLfaLU2xGCmYcG5F3NkLv60WIIrVihI8TTmFjSmzUDryrpJkOzeTCm
W6cfTjpkAKBDKdFNjASZHgfI2MsQKksy6DSl0q/4xjuIuhbjKnn1JH2r/Q90rUKO
tMobk9XQuhJX4UNfDs8xG7QgrBR2nkc8LQnc6oWgGEqrlc/1k8BurOLmr/6VDPVx
hT9zBbphG3gT2kDgRxEQGfW+nQl/2Am/G0M9yPgTI7kVC67YVLfNaM+7jZqbAs+b
evVAIzNiTvnNkpJlOOh5Kn4WfzTN1DkzVE7PLB21fG38S4sx3CaIMFc09XxY1lZd
awIDAQAB
-----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 275445879545891706903353153586010187537254
 . . . . . . . . [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 2023-10-10 12:05:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-08 12:05:48 +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 'askus.library.uni.edu'
 . . . . . . . . [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 21992127735458967657919285742150689471537371820521661420166658099747438093292052353359215584044169577011494259070441943697787539856765366533489298983521932555841275403646429704663103316057386694701929545540301763125721987749109899509092965995362884067719894975679648712162352032730525257011246759628529784902224725344094001325099505294158291210763644660756955399978085652703431500993619379030483540914393397656182669054428410060178201008978650547192097136247671677318640693132832945567252987668225749685295862735745861537290160150374166606004956944011694036011079311115522045891262595261381032098704304479245174201707
 . . . . . . . . . . . . . . . . . . . . [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)
							81c5f1df0908ea6207d094b9136be135309b9fb6
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'askus.library.uni.edu'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b19b1916900000403004730450220530ca220b42c88615d70e82e0f690ab7d2869434358fbb3861de22e2314a74fb022100c76f45bcfd390641d48f25267ca4b4d023655c5133e55484d1203a9015f407ae007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b19b1917a000004030047304502204321afdb7967fb28321690657b8e6cbf9a5f89b7e561d89fed3bab96dd887f960221008c19a2c0f3fd41cb229ac7566a5f0008527a412bf6aa8b99b5ad0830ec78ebea
 . . . . [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)
		00b9a1806f119ee321496dd9ed4e41e8fe020fab8418381641b0b643b3961e10b8e1c76aeea54f98191ece358859aae2e5c09c590adec924e2e7422edd6ad36e72ece33e919c8ed0022546631bd966ca35850bf0c21b45bc2ac29f0e3c886d784b5f41edeeb07e6b63c6110ea88bd9d46a82aee5b1df1039fc7c6f3e9fb198ae4fd88b1054dfb6c607d1a4951578a0a3ef0b247c92bc1fd352f982c685d199190a9d5a757b8d73d4ea7fb8db701ad994068bcc028e365c0625c79b3fc7150c68cc4aaf6ca3a31466be8eeb23eea8e1db33051a1db938bd6c70a39b820c98776855b3d25f7f078d6f1849c5dcd5f09d988989d353013ec35c959beed8c831955223