engineering.cornell.edu

Issued by R3

About this certificate

This digital certificate with serial number 04:88:b3:63:68:d0:39:99:d7:2c:e3:ef:ab:12:c9:77:45:81 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=engineering.cornell.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:88:b3:63:68:d0:39:99:d7:2c:e3:ef:ab:12:c9:77:45:81
Serial Number (int): 394965993602790995716787349711610380240257
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: bf:0e:78:8b:b3:45:11:37:c4:0d:92:4d:cc:aa:e3:27:21:cc:7b:0d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 8c:81:7a:d9:a4:d2:7f:0e:d3:37:8e:c7:c6:0f:d9:2c:69:0f:e7:1f
Fingerprint (sha256): 00:c9:72:27:34:68:07:1f:65:5e:5a:34:94:6c:b0:8e:a0:6b:c7:0c:b8:58:c4:fc:80:98:01:48:bc:47:a9:6b

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

Revocation information

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

Check the revocation status for certificate engineering.cornell.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for engineering.cornell.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

engineering.cornell.edu

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Certificate

The complete raw certificate details for engineering.cornell.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA03dlueiqU9TaBAlH3pgf
iE4UXaaZsRIeYw1DW0GKPZBhGsKo/esle37ErDlVboZ4oBd79JeKUP8f66eBYj+L
8v//ENUBVO8q9JDfCVP6bTPXr0NGbnJHGIBbEsc9yXB88LOFQgZtGpZnn7oGEesu
yG/bsSZy3vpfb/n/qHJtDoq/ve4zAKpve3G6Ebie/RNlYiYrR4FMaUUxAntMObJa
fwqLWYWcrziW96NGL3lbJIdqdIrjHr/8oxALM9wQOOE4+zHzego2dS32LyxkTgSH
RURX9KojWKwETgq+dpM/QT17kuZqOV7TB90PVOd79KKRJwKOAFXnMi7Lhh3ejggv
1wIDAQAB
-----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 394965993602790995716787349711610380240257
 . . . . . . . . [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 2023-12-13 23:16:02 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-12 23:16:01 +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 'engineering.cornell.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 26695159384373369845709358098374780265990499043950374347724396609458701933701770319952474810313851700046607426219730083565216481854857583992257238874543591423003715813693891015091275060232403199501681356007429988817643798084619089246260921599543280164777577960888560152266402352210480332435467709482440546940453389921491368808979601804386437156673514261702767082377585476103083295874298395225667022143060160026377573583937142196818122435939481254804162303776302610397764309326731565108031723307598991536594054272929657683304164540690403131385718625434641928019718011881755414302282757494601343220985513414735396614103
 . . . . . . . . . . . . . . . . . . . . [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)
							bf0e788bb3451137c40d924dccaae32721cc7b0d
 . . . . . . . . . . . . . . . . [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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'engineering.cornell.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c65ae2b200000040300473045022100e0ea33a4271717c9ed44102b947621db5db93251abd83dde2191a0035aab56550220153b1958d908139bebd1ee346a2b65ee36958a8d2f2769872841116dcdbdf4fc00750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018c65ae2b60000004030046304402207097263e74a119265d96758a99f97d053f11f3ea057ae264d55402a0a34c8c5f022049b4f2d82d749a166aef20fe11fd3fe2002e189c7630f369e4c697418e0c588a
 . . . . [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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