ubsc.cornell.edu
Issued by R3
About this certificate
This digital certificate with serial number 03:be:65:79:6d:4e:32:71:9c:8f:29:10:fc:c8:d2:5b:2f:2e 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=ubsc.cornell.edu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:be:65:79:6d:4e:32:71:9c:8f:29:10:fc:c8:d2:5b:2f:2eSerial Number (int): 326125390022731262287802603744957650644782
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 0d:5d:fb:ab:9a:be:33:18:ec:e9:3f:bd:b1:cd:d6:4a:b8:f2:a4:09
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): c1:96:18:47:a5:33:89:fd:6c:50:ff:29:08:21:83:47:95:9b:55:20
Fingerprint (sha256): 00:16:5e:58:cb:6d:77:9f:d8:e9:8b:7c:89:2c:92:bd:f9:5b:cf:95:f3:c5:88:10:7b:90:c7:09:00:69:f1:d3
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate ubsc.cornell.edu
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ubsc.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
ubsc.cornell.edu
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Certificate
The complete raw certificate details for ubsc.cornell.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIE7jCCA9agAwIBAgISA75leW1OMnGcjykQ/MjSWy8uMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzExMTAwMDMyNTZaFw0yNDAyMDgwMDMyNTVaMBsxGTAXBgNVBAMT EHVic2MuY29ybmVsbC5lZHUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB AQDNCnAXfITNOOQIfdTlhBNLTXsFTErQRBgjbxuHQCvQE6sfS9UsFeqPemtiUWfm kiHf7lOc6MLhs+kpbzJNfeRmBTfMu3vizUhp5CKLZVXZAt8bGzw0rhXvNfkXsudE pCpE55nlac5yl6gVYOk9EISGSRQD7l4fwLJfJBYGnnRtx1VvFyfCQg1eNYvuf8Gk iOStuIpqPHwIktH4pY9ZIfsJKtIXhzMqX/BsVEQtC80OoKQTY4OffcQTmongiM5w HgJvu4FAb2g2UyZE6UhGrwWe98hkBpXoElerJBsDYN+vrGPnQAsJhHGjZKj90aFd n+7NbgJsHGPwtcob8ZoXGCV1AgMBAAGjggITMIICDzAOBgNVHQ8BAf8EBAMCBaAw HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD VR0OBBYEFA1d+6uavjMY7Ok/vbHN1kq48qQJMB8GA1UdIwQYMBaAFBQusxe3WFbL rlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDov L3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5v cmcvMBsGA1UdEQQUMBKCEHVic2MuY29ybmVsbC5lZHUwEwYDVR0gBAwwCjAIBgZn gQwBAgEwggEFBgorBgEEAdZ5AgQCBIH2BIHzAPEAdgA7U3d1Pi25gE6LMFsG/kA7 Z9hPw/THvQANLXJv4frUFwAAAYu23FweAAAEAwBHMEUCIQDBILaSIFxdA932IJxj rdzH9GPN4yNA4cPB+Ay09q55rAIgBVuRx2tQXeCj0COijLuQfdgKn1qilTpZXNyT 3drxpBUAdwDuzdBk1dsazsVct520zROiModGfLzs3sNRSFlGcR+1mwAAAYu23Fwb AAAEAwBIMEYCIQCnzuzwBVNezynydx8MmTGsRA88dMOAIbrscb7nuecMLQIhAJ9o htFsdsW8Bp5JThKWca02IC3fBWcJ6HoImN3fPCDlMA0GCSqGSIb3DQEBCwUAA4IB AQCXqpoLbGat6/cqsJ6dUpuvBXfE5WDpEBoToAq3zZRZju7EYg2FOPT8B+HYsBa4 tyOgIjv/f4v41u6Ui9zeqIkWBCYcW7OQAOOUhh/rMFYgrWHLjudljlgeywSAo7R+ OBqHEG27WJiLi5tR1hLWW9cCqml6u26WnxGDf0AOLqhaNgeTfB841AARnmo0uliw yDXFAsFnLdfMR59EN7x5cu6lhNVLQdgF4f6suSKRpl2zf0ozpytogvH9nc8B14OK 1OFP9M+oMhWEFozHco9dfGZBEhRVlhcuejtJl9EQI/dVHouo/Zn5k3KBIVb6aReA MG+G66lRtHAGoJHhrw/Uh5yr -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzQpwF3yEzTjkCH3U5YQT S017BUxK0EQYI28bh0Ar0BOrH0vVLBXqj3prYlFn5pIh3+5TnOjC4bPpKW8yTX3k ZgU3zLt74s1IaeQii2VV2QLfGxs8NK4V7zX5F7LnRKQqROeZ5WnOcpeoFWDpPRCE hkkUA+5eH8CyXyQWBp50bcdVbxcnwkINXjWL7n/BpIjkrbiKajx8CJLR+KWPWSH7 CSrSF4czKl/wbFRELQvNDqCkE2ODn33EE5qJ4IjOcB4Cb7uBQG9oNlMmROlIRq8F nvfIZAaV6BJXqyQbA2Dfr6xj50ALCYRxo2So/dGhXZ/uzW4CbBxj8LXKG/GaFxgl dQIDAQAB -----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 326125390022731262287802603744957650644782 . . . . . . . . [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 2023-11-10 00:32:56 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-08 00:32:55 +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 'ubsc.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 25883999617841295617760825596274558651634386040634730449573220660629731623609268278644977159152337989589438601811097998224281814399108196615772777819893368729288692824886047000643455441144326068625433887386138484024128715064722314666585857434605118408025822859547819856902617195274947713669540509825678863150897000866796199045516254789163079023905161694049219855681960701382346771326193707403557552060523811424733254025655109551957989158885132101674063866395671706292556232356044300162350585596420842097096110120704340519778666702557480360662467681777871474810741173703128324110870381472180618424935793625393593329013 . . . . . . . . . . . . . . . . . . . . [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) 0d5dfbab9abe3318ece93fbdb1cdd64ab8f2a409 . . . . . . . . . . . . . . . . [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 (20 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ubsc.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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f10076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018bb6dc5c1e0000040300473045022100c120b692205c5d03ddf6209c63addcc7f463cde32340e1c3c1f80cb4f6ae79ac0220055b91c76b505de0a3d023a28cbb907dd80a9f5aa2953a595cdc93dddaf1a415007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018bb6dc5c1b0000040300483046022100a7ceecf005535ecf29f2771f0c9931ac440f3c74c38021baec71bee7b9e70c2d0221009f6886d16c76c5bc069e494e129671ad36202ddf056709e87a0898dddf3c20e5 . . . . [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) 0097aa9a0b6c66adebf72ab09e9d529baf0577c4e560e9101a13a00ab7cd94598eeec4620d8538f4fc07e1d8b016b8b723a0223bff7f8bf8d6ee948bdcdea8891604261c5bb39000e394861feb305620ad61cb8ee7658e581ecb0480a3b47e381a87106dbb58988b8b9b51d612d65bd702aa697abb6e969f11837f400e2ea85a3607937c1f38d400119e6a34ba58b0c835c502c1672dd7cc479f4437bc7972eea584d54b41d805e1feacb92291a65db37f4a33a72b6882f1fd9dcf01d7838ad4e14ff4cfa8321584168cc7728f5d7c664112145596172e7a3b4997d11023f7551e8ba8fd99f99372812156fa691780306f86eba951b47006a091e1af0fd4879cab