bosefellows.mit.edu

Issued by R3

About this certificate

This digital certificate with serial number 03:63:b5:9c:04:7a:1f:9b:5f:ed:78:87:30:c3:3b:38:f3:d2 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=bosefellows.mit.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:63:b5:9c:04:7a:1f:9b:5f:ed:78:87:30:c3:3b:38:f3:d2
Serial Number (int): 295266212476805905142010236507641991459794
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 47:f8:0d:72:a5:ab:aa:71:01:bf:02:e1:5b:37:95:52:9c:c8:26:72
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 40:75:a9:40:46:6f:03:c0:3d:75:f4:26:12:b8:1a:e4:2b:7d:8f:e0
Fingerprint (sha256): 00:29:c5:10:5f:13:c3:11:5d:54:4e:39:3a:f5:c2:9f:06:f3:4d:fb:ed:43:94:79:13:8c:0b:2a:e2:ae:6a:8b

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

Revocation information

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

Check the revocation status for certificate bosefellows.mit.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for bosefellows.mit.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

bosefellows.mit.edu

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Certificate

The complete raw certificate details for bosefellows.mit.edu in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE8TCCA9mgAwIBAgISA2O1nAR6H5tf7XiHMMM7OPPSMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzExMDExNDQ0MTdaFw0yNDAxMzAxNDQ0MTZaMB4xHDAaBgNVBAMT
E2Jvc2VmZWxsb3dzLm1pdC5lZHUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
AoIBAQDuKlzjE0BBwQsHsHy7necDlHlQGkRvTK3hNdfyiESZS1a0nIUYEolq/ltO
/a3Nx70nhBB3mReR94zGVUgkiDKCCggY18DK9tC8K+o1ioChBc79pTV+lrd/TagO
ZJfh6f98jQAj7SMUZ6R5BF0XsM6I0pyM7QNaYZcj2c0Il8D75pS5XWvSmnsRc/bC
60EvKeL9y1AQCmF/C8DdIJktlprDS4oYaedZmBUZv463uHufVwCbQLNtMroEEU1Z
w61zDuFOqrGkaRJEx5cD+AkpWntrG5ONnMINKoaZs15YK/LBG1Bow7QgwV7fz70n
P5tR/Xz1oc7z6E5BTk+zT4I1mkdnAgMBAAGjggITMIICDzAOBgNVHQ8BAf8EBAMC
BaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAw
HQYDVR0OBBYEFEf4DXKlq6pxAb8C4Vs3lVKcyCZyMB8GA1UdIwQYMBaAFBQusxe3
WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0
cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5j
ci5vcmcvMB4GA1UdEQQXMBWCE2Jvc2VmZWxsb3dzLm1pdC5lZHUwEwYDVR0gBAww
CjAIBgZngQwBAgEwggECBgorBgEEAdZ5AgQCBIHzBIHwAO4AdQDatr9rP7W2Ip+b
wrtca+hwkXFsu1GEhTS9pD0wSNf7qwAAAYuLjo6VAAAEAwBGMEQCIBzC7nJ8bF4x
nlhm+6J2hav6DmLW7a+jQivpXOh5D4MVAiBK2dO3BuSL8XxqUzoVpP9eajyeQR3D
uZXMZk7rAlF8ugB1ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h+tQXAAAB
i4uOkFIAAAQDAEYwRAIgOfd39e6kXPes7gwG0zcLtmHwluxuwvm0a3YOhHAloCUC
IF/v4tJGfhCeoWQU6ovFxebviNeDFAnpAmf3USyRjnwOMA0GCSqGSIb3DQEBCwUA
A4IBAQBfNX9stCGkHkz/MNnaXTUVk+8qs7ExeW53nYXGGAJ4R6o8pjpi+aseCiY0
GCONG8RhHIrBt1O5RTaOgZpvyUDrIqcuz5bT94efWTGWgiuqsGPrpUg+ZvsT5fsB
8xtfc6lmE6zOXwHXIP+PJcCC+dQK/aALwokVJj1DoiZeWk8GxNXM4OPDyu/28mdB
n3lAkmVxzCuT5fOZHZ4YGzFF9Zqk/ArmVipB23Vmge0YDLdfW5/NbocuXToMxfc6
IH7vHGMloChZxXDm2ljJhxDG7FcCZ4neyRb7io+LmnuBnbIQoy34JWVCwKkqN6ab
PG9gclghzeREMcgp20Zuntezn6Dm
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7ipc4xNAQcELB7B8u53n
A5R5UBpEb0yt4TXX8ohEmUtWtJyFGBKJav5bTv2tzce9J4QQd5kXkfeMxlVIJIgy
ggoIGNfAyvbQvCvqNYqAoQXO/aU1fpa3f02oDmSX4en/fI0AI+0jFGekeQRdF7DO
iNKcjO0DWmGXI9nNCJfA++aUuV1r0pp7EXP2wutBLyni/ctQEAphfwvA3SCZLZaa
w0uKGGnnWZgVGb+Ot7h7n1cAm0CzbTK6BBFNWcOtcw7hTqqxpGkSRMeXA/gJKVp7
axuTjZzCDSqGmbNeWCvywRtQaMO0IMFe38+9Jz+bUf189aHO8+hOQU5Ps0+CNZpH
ZwIDAQAB
-----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 295266212476805905142010236507641991459794
 . . . . . . . . [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 2023-11-01 14:44:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-30 14:44:16 +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 'bosefellows.mit.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 30065606476850022848279634243532578915345522252028219106671248812296156308198518581872591154079498512361272509933329429845299302876610489192984623295382040588057537659812500145939903385602584582379159409253504199032961216880535965488828535819037237514717625758439260384585864652590752460584603678995855935652028532387164549388127516407967424853512125201827151979087011857539455392480400318157167874072211719231231915299866890627976437578049255816751372263698137776352211966156851275342930907846349355267167943238399393346858856278678123709331739250684714175613459651887718662144853334264673780854614533330723432712039
 . . . . . . . . . . . . . . . . . . . . [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)
							47f80d72a5abaa7101bf02e15b3795529cc82672
 . . . . . . . . . . . . . . . . [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 (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'bosefellows.mit.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)
							00ee007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b8b8e8e95000004030046304402201cc2ee727c6c5e319e5866fba27685abfa0e62d6edafa3422be95ce8790f831502204ad9d3b706e48bf17c6a533a15a4ff5e6a3c9e411dc3b995cc664eeb02517cba0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b8b8e90520000040300463044022039f777f5eea45cf7acee0c06d3370bb661f096ec6ec2f9b46b760e847025a02502205fefe2d2467e109ea16414ea8bc5c5e6ef88d7831409e90267f7512c918e7c0e
 . . . . [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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