www.datascience.harvard.edu

Issued by R3

About this certificate

This digital certificate with serial number 04:8e:09:14:94:08:ad:75:8c:1d:0b:97:e3:e2:ec:ee:79:37 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.datascience.harvard.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:8e:09:14:94:08:ad:75:8c:1d:0b:97:e3:e2:ec:ee:79:37
Serial Number (int): 396781309730197612990951920759062796335415
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 61:28:84:4e:d9:97:46:f7:21:a4:d7:9c:fd:6c:5d:88:e5:f5:97:80
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 0e:64:f0:3b:5b:f0:e1:4d:c4:c2:d1:c5:76:83:7c:b5:2c:fc:97:ec
Fingerprint (sha256): 00:42:4d:d5:4a:46:25:3d:d2:74:a8:0d:ff:70:cf:7d:33:7f:e9:01:d4:b3:6c:ac:73:86:94:65:a7:89:bc:b6

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

Revocation information

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

Check the revocation status for certificate www.datascience.harvard.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.datascience.harvard.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

www.datascience.harvard.edu

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Certificate

The complete raw certificate details for www.datascience.harvard.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw8lA8oF3qcTcZUa+Xa9w
+D9Yzst/eE6hgCNm96WpEVj07ra8TbL7DiteAFp4VIE9oC2XeFJ4zkbB3EgIQfJP
ebtBqD8t+GKPoc5HHnOyou5iJu3qDmgGofWTB2LMS1QeWYgZl9ICiG62548+My+H
eiRw6aDfFmAi/fd32Ai0w+ChIqmLYRi1gZMkqOD5UEFJJkfDc8zSfkI1KR30cRuu
yVXdEFc58YFOMSwv8azkVyuP8qKKRsxel50oJTmILwms+IOcQj4UDoLqNB59jjTN
oBKwWwbdJDojff9TsaplNWHwgeab93GgNkU+6dqV8ItdOWOwB6ix+AjUsvH3DygZ
+QIDAQAB
-----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 396781309730197612990951920759062796335415
 . . . . . . . . [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 2023-08-30 09:17:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-28 09:17:28 +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 'www.datascience.harvard.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 24715711366817173967844126911821557572202875230265052817845439998373515755662558928945560510073382310632942594462116297880565230342812727544898670426162842159358031343272839012870159338854538631475414377469999671173567490436826729838768433316799637175005966237522159827916232816227607876314598854604862265317958729282752210831988722152644268420070898443093756728326063500311885962704781250026793705531077232472311532379640768901831928175697554723583033509818888402947457784028168181623113186303343358476860709963884870904761476213986075891851640876828410324395075575134605363244091857293604642661739971338862844189177
 . . . . . . . . . . . . . . . . . . . . [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)
							6128844ed99746f721a4d79cfd6c5d88e5f59780
 . . . . . . . . . . . . . . . . [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 (31 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.datascience.harvard.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)
							00ef007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018a45f2b9b00000040300473045022100d960d283580f795aae332c3043680d2e0c7aef2fbf127cf22129302b8ecd822002206d25f203f62ddd3d6e5372572c7bdf193dfb0f3407ecae1dbce820b3b977ecfc007500adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018a45f2b9f2000004030046304402207b7f864aecd4669c7421d7b00a67a4273c734a6ffedb2a4ae2373ec15d6ebcac022063c0e9af11d5a5c19283bd692b8e343c4f67e3560a05f63202918238847c5540
 . . . . [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)
		008149b1413559ecf0d85280dc5e1ea55e3b6c34bef3ebb7fca0631fe843b3a1816c3ac6f0078e13e61f0e95ef76f7cf1fa58f3e1cdc02ab72c4a0d44ed2c4d3692eae3782468eeaf05974dd01eae170628f82f386f26900f4dea2b711c373e981cb59001c63c40833861d8c2ba01cc24f944f570ac232c6cba19f1d73f22b973c9c400725432d87d18fa568bf949182fe7aceea713cae8dc4a211fe7d405ec33cf9be85be7f3fa972e0ee22957fe3835e9cb390299c35438c56c1b7bc0722aa96824f3c43bf201310426f6f4e4d6c09f711ea1565a9f6e07ce59f1fb0a977be88eb4300905aa76587916c50e4a33f9fa149681cd4e715b9fb2207c7abf4c2305c