askus.library.citadel.edu

Issued by R3

About this certificate

This digital certificate with serial number 04:cf:4e:9f:d8:36:2f:60:22:c5:fc:47:73:52:af:b8:5b:3e 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.citadel.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:cf:4e:9f:d8:36:2f:60:22:c5:fc:47:73:52:af:b8:5b:3e
Serial Number (int): 418992103423840436180177594698721964612414
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 52:e5:90:6c:52:8f:a4:c7:64:9a:98:7b:36:1c:9a:2e:f0:f5:1a:67
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 3a:b5:be:2a:32:7a:7e:9d:1e:6f:ae:b6:4a:0a:2d:f6:05:36:92:af
Fingerprint (sha256): 9e:04:bc:a9:39:aa:fb:36:d3:6d:12:5b:da:6d:75:aa:dc:20:5c:18:e8:b0:ca:a3:80:0f:40:88:78:51:e8:5a

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.citadel.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for askus.library.citadel.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.citadel.edu

Other certificates including the domain name citadel.edu

(limited to 100 certificates)
radius01.citadel.edu
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campuscenter.citadel.edu
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coldprd.citadel.edu
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sioux.nation.citadel.edu
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mag.citadel.edu
foundation.citadel.edu
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library.citadel.edu
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askus.library.citadel.edu
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foundation.citadel.edu
2008dhcp1.nation.citadel.edu
today.citadel.edu
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library.citadel.edu
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ad01.nation.citadel.edu
*.citadel.edu
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hrweb.citadel.edu
foundation.citadel.edu
*.citadel.edu
today.citadel.edu

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE/TCCA+WgAwIBAgISBM9On9g2L2AixfxHc1KvuFs+MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzExMTQxMjAzMzRaFw0yNDAyMTIxMjAzMzNaMCQxIjAgBgNVBAMT
GWFza3VzLmxpYnJhcnkuY2l0YWRlbC5lZHUwggEiMA0GCSqGSIb3DQEBAQUAA4IB
DwAwggEKAoIBAQDUD721zH3e2yBLyZOr+ouRimBnH01cU20mcbMmqYpEUKFXtKMw
0GzPI6KW3L+l9I0KNUFQDrIgYXPZTIGWqwlg0Lu2zrBLEbYsE0u7u6l4316BgLFg
/jJpZQ0UsCM4axe0vRHufaW+42AGp1iEEbvDo2TH2HJblnPw6xTk48LT3FhdXQbU
ik74Fsx2Xm1Mt3UJCkRhrgggbyRh3CPzVSHXPSVyGq/liTxtxXjqeGhOjx5G91Tg
grJsGFHbfkWyv266eh49/y9m8s97mMT9KE4lpq8lCuQOo8nvYKv0k8okQN4u9r9O
d4IxlMj/1/9A5q6S27pABH+1SFZZmLhnzbsdAgMBAAGjggIZMIICFTAOBgNVHQ8B
Af8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB
/wQCMAAwHQYDVR0OBBYEFFLlkGxSj6THZJqYezYcmi7w9RpnMB8GA1UdIwQYMBaA
FBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcw
AYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMu
aS5sZW5jci5vcmcvMCQGA1UdEQQdMBuCGWFza3VzLmxpYnJhcnkuY2l0YWRlbC5l
ZHUwEwYDVR0gBAwwCjAIBgZngQwBAgEwggECBgorBgEEAdZ5AgQCBIHzBIHwAO4A
dQBIsONr2qZHNA/lagL6nTDrHFIBy1bdLIHZu7+rOdiEcwAAAYvN7hkcAAAEAwBG
MEQCIEF8TJJqmi7ZxEaWdUKpWGpg29VqRe37M6RYPuFxLsI5AiBA0TuuekCO9BDk
LFectKrynBa7AO68dHWIzvfzgWUrOgB1ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9
AA0tcm/h+tQXAAABi83uGSYAAAQDAEYwRAIgarSLsTTmouR13zLeggqIP8ZDZ81Q
C+ATgriPiPyeNc0CIFenpwj/YrtBNs6xXip8DhmpCL+97hRd0Y6P6MZele/YMA0G
CSqGSIb3DQEBCwUAA4IBAQA/FXyTJr85U1RafjGhONYTDrskq71mBTpHwJKXQj5X
nLAlLIc6YPI1s8Vx+89/ifTKcOvlproFHUl/8KEdZ38n4ABZsiXkUSotTeaPy0WS
sGyAQX5F5edKzqFjX0vUWRHPwEEglpiCNePKWx0FAfAhGFl72+zpg3cdSg/r9l1Y
qZp6aToC7qzLw3oscX12UOk6QpBD2QEhLD8pNUOuzz2anmXpWjxfOLFEm/SPkW9U
X20pLsfj5qGTBfXjzLIUEmO2HGBc7o84fOl6kumRoT5mAuxuPCQ972BeOYGcIvky
DVQa+3SlvKRGXpBQfIVl4w+lTfaAzKBzwSe80vxTKDP6
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1A+9tcx93tsgS8mTq/qL
kYpgZx9NXFNtJnGzJqmKRFChV7SjMNBszyOilty/pfSNCjVBUA6yIGFz2UyBlqsJ
YNC7ts6wSxG2LBNLu7upeN9egYCxYP4yaWUNFLAjOGsXtL0R7n2lvuNgBqdYhBG7
w6Nkx9hyW5Zz8OsU5OPC09xYXV0G1IpO+BbMdl5tTLd1CQpEYa4IIG8kYdwj81Uh
1z0lchqv5Yk8bcV46nhoTo8eRvdU4IKybBhR235Fsr9uunoePf8vZvLPe5jE/ShO
JaavJQrkDqPJ72Cr9JPKJEDeLva/TneCMZTI/9f/QOauktu6QAR/tUhWWZi4Z827
HQIDAQAB
-----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 418992103423840436180177594698721964612414
 . . . . . . . . [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 2023-11-14 12:03:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-12 12:03:33 +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.citadel.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 26770282856464028982740794204164968361170541192232724259092491968967862198813467409283003195116820345501273370067503722197746283898400945363909320309380993723637070908177425220749702703339887235471610571261053345814252754977869224537136216266215733038481430768426001699624028185008313033085160577086869226793726075724581111430006176966744787165744216983178029719693208731221068917113010782690590956807087302875170891677670733403486259986658806179570916293189038217373759813708954685906765439708984872403392927720600767435607939160010816117860581985664803454196937492468077853774447327045125637278285103231966265588509
 . . . . . . . . . . . . . . . . . . . . [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)
							52e5906c528fa4c7649a987b361c9a2ef0f51a67
 . . . . . . . . . . . . . . . . [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 (29 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'askus.library.citadel.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018bcdee191c00000403004630440220417c4c926a9a2ed9c446967542a9586a60dbd56a45edfb33a4583ee1712ec239022040d13bae7a408ef410e42c579cb4aaf29c16bb00eebc747588cef7f381652b3a0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018bcdee1926000004030046304402206ab48bb134e6a2e475df32de820a883fc64367cd500be01382b88f88fc9e35cd022057a7a708ff62bb4136ceb15e2a7c0e19a908bfbdee145dd18e8fe8c65e95efd8
 . . . . [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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