takesian.hms.harvard.edu

Issued by R3

About this certificate

This digital certificate with serial number 03:f1:be:fe:f6:70:70:e8:a2:f1:d5:8c:6b:90:2a:a5:89:7c 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=takesian.hms.harvard.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:f1:be:fe:f6:70:70:e8:a2:f1:d5:8c:6b:90:2a:a5:89:7c
Serial Number (int): 343598785384209371757897443668281738496380
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 5a:d7:b2:8a:30:cc:8b:6e:07:2b:42:96:44:ba:7b:8c:07:5a:c8:c4
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 4e:11:7f:2f:33:b4:cf:a0:b6:7e:ab:80:02:6a:bc:15:b9:00:47:d9
Fingerprint (sha256): 00:18:78:45:51:0f:99:f9:9d:69:33:a1:76:63:13:b8:e8:6a:c3:aa:2b:be:83:c4:ac:34:33:dd:dc:f0:89:a9

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

Revocation information

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

Check the revocation status for certificate takesian.hms.harvard.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for takesian.hms.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

takesian.hms.harvard.edu

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Certificate

The complete raw certificate details for takesian.hms.harvard.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAg43PUOvAl9UiBbkS1UhH
BlNqcEm4s0PKyDAzhBzAM60y7veV2xnIAFj+qBUk7dwm46nQBRfY7+0BVzxCGW5Z
XTuH5Uic/AHyR65AGVAlvQPiBgQSYp2kL+nrLjYB9jgO9D6bLUQbI6GaTr7uS7F2
KlZLU1NnY4Ubok5YQezLu04FK8nHHqV9sNPlC2HplhQQM4cAYmXl1oRzKTvLwoQD
9EvHdqQIQ9kuoYqGwuZ+V4OAsarzajYrbwGCMleZmHBew29NM0COqIGItTTW3Wx0
oX1T1qKZDT7bOtoMLvZs1VSDUrYM9V7bYsbvcPk5bEdsSEdoV6ANTDBHsFpogOjL
MQIDAQAB
-----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 343598785384209371757897443668281738496380
 . . . . . . . . [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 2023-12-20 06:52:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-19 06:52:16 +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 'takesian.hms.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 16607146983280265443328318201924824276778393248237377984433985097124447806733155015337579067499649896184925881851729542508689977295504591049007361694271341128828369093841812458290089385454962730788688386649474555199338028615559513924436069168346688620365775865126100342050773012565022851659321715736944015818956267491346748728616411055224303931013127153124503377348433746616445964836499349162262470134586108447406495298854211520555799769758576391307135049331692594856318015697246750029822309315966857536185908218108297268764669884158311138825816340100824919444734472327701502018004157077022957702641041120170835757873
 . . . . . . . . . . . . . . . . . . . . [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)
							5ad7b28a30cc8b6e072b429644ba7b8c075ac8c4
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'takesian.hms.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)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c863609310000040300463044022076a635dba1516b3fc27fb6855c6fabfaae521018340e8270d544912e835a21e8022020d4a720dfd635187fc39375b383edaf2a0e03e4f0ba516a78f203d3986d530100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c86360b1e0000040300473045022060a0ef568ab934823b0ba375973606cfbd1270dcd505d245ce5a2076e8211ce3022100c192d76ac716db067bdd69f94f865008a9fbad6671d95ac1365b5decbb494bef
 . . . . [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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