ct-stem.northwestern.edu
Issued by R3
About this certificate
This digital certificate with serial number 03:a6:0b:7e:d5:e4:5a:cf:86:ee:ce:b0:29:43:55:cc:8a:a7 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=ct-stem.northwestern.edu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:a6:0b:7e:d5:e4:5a:cf:86:ee:ce:b0:29:43:55:cc:8a:a7Serial Number (int): 317839010779759705504463997861401239259815
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 2b:86:28:04:8f:77:af:49:28:5e:64:59:6f:e3:7f:7b:0a:f2:b8:12
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): bb:ea:61:10:40:33:5c:c7:7f:eb:71:75:c8:dd:c9:63:a3:14:63:a3
Fingerprint (sha256): 00:39:83:c8:12:cf:c7:75:29:fa:ea:96:ff:74:68:27:0f:bd:81:60:9a:3d:d6:1d:bd:f0:78:20:81:c7:55:76
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate ct-stem.northwestern.edu
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ct-stem.northwestern.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
ct-stem.northwestern.edu
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Certificate
The complete raw certificate details for ct-stem.northwestern.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFNzCCBB+gAwIBAgISA6YLftXkWs+G7s6wKUNVzIqnMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA0MDIxMDU2MjNaFw0yMzA3MDExMDU2MjJaMCMxITAfBgNVBAMT GGN0LXN0ZW0ubm9ydGh3ZXN0ZXJuLmVkdTCCASIwDQYJKoZIhvcNAQEBBQADggEP ADCCAQoCggEBALvkyK3D8wX7jZObW7CAeIa0dBUY6SffWLqMaYlqdxdC2xe/a4dE jHWmOClikRrJiIwd0DzgWDqYKjoagMC6k69PKfYjpaDj2zDVtOuDszPmsWmJMEi5 UfrBAhqmepC3O5DxPB9GDI8Nv5epVSGe7egBds3fL9Hc2KASue/tOOz2fqgT1tnB nDOPiNTts9ZTRXqJPhyvg4L0Ah96Ng2+Zh0mW3uWcEWKDljkQOyKu1t5duNPRjpk WTQwcC4fPEiLLT+aKacuKgRGiTowmt7liuIoBDLrrYXicIjo3Yq4jWk447c2dzDy Tr5GDcTT9qMz0zw671kCURmskmnAXMfzePkCAwEAAaOCAlQwggJQMA4GA1UdDwEB /wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/ BAIwADAdBgNVHQ4EFgQUK4YoBI93r0koXmRZb+N/ewryuBIwHwYDVR0jBBgwFoAU FC6zF7dYVsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzAB hhVodHRwOi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5p LmxlbmNyLm9yZy8wIwYDVR0RBBwwGoIYY3Qtc3RlbS5ub3J0aHdlc3Rlcm4uZWR1 MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUH AgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB 9gSB8wDxAHYAtz77JN+cTbp18jnFulj0bF38Qs96nzXEnh0JgSXttJkAAAGHQdNd 4AAABAMARzBFAiEA7hEXhSi538PA/hG7zCfgs4gOipSnKTtZ8Yaob6hmp84CIAQh 7SvOF0iWwWlmbkLRoWwHOFWtCqumgSnJK2t0R04lAHcArfe++nz/EMiLnT2cHj4Y arRnKV3PsQwkyoWGNOvcgooAAAGHQdNeBgAABAMASDBGAiEAqInNkHkgbsjguHTn N5pBCDRvfp5hXTzgguME0x73hQ8CIQCix11qo1bfezqK9r09EbiVRizSuDvJme0d ehSXPXvscTANBgkqhkiG9w0BAQsFAAOCAQEARsgCdUuJxFc80uCMJZT0VgoIifL3 VJbF1sPpx/E4zrBq4/0nOGW70tibJmyKpldvD775sQ/74ZFOi/4N+fCb/JdAXMJZ Hl7kQRQyLYk3r1FSVcr3U10gQ8/EuXx17hGw0R5xmFsU3qZwjD+HmfEEZGXT5E+m BYZsuVgVpdPAorG0u1f9C725Dua0xsce7tBRKXPrjxwLBnpf6XCI40/j7PcPBw+z F0/XXe5LTqI65HGEITjC9WcKA2j7dtPV1UVzYyj26S6qABfxSRuI2B6ZKnwdDBY7 aavVxboqRN9jhOEzNN2MKu08KoxE08uADn8Y46CpO2YRq7IxqGeHHxgWVQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu+TIrcPzBfuNk5tbsIB4 hrR0FRjpJ99YuoxpiWp3F0LbF79rh0SMdaY4KWKRGsmIjB3QPOBYOpgqOhqAwLqT r08p9iOloOPbMNW064OzM+axaYkwSLlR+sECGqZ6kLc7kPE8H0YMjw2/l6lVIZ7t 6AF2zd8v0dzYoBK57+047PZ+qBPW2cGcM4+I1O2z1lNFeok+HK+DgvQCH3o2Db5m HSZbe5ZwRYoOWORA7Iq7W3l2409GOmRZNDBwLh88SIstP5oppy4qBEaJOjCa3uWK 4igEMuutheJwiOjdiriNaTjjtzZ3MPJOvkYNxNP2ozPTPDrvWQJRGaySacBcx/N4 +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 317839010779759705504463997861401239259815 . . . . . . . . [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 2023-04-02 10:56:23 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-01 10:56:22 +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 'ct-stem.northwestern.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 23719380575225499088482921989127638545814518165025730257289953806118057647275774802856728280049581705991133753888965021533563376754976530019828222486009415132523430650180903266217644415212842629729705042273372017108359226561283764314127091137936357547848019600391465302932112884623829473773260469074798117936529797306480696339026951061726902359184731716443359504965566258815287955410860805647830133113240760105061607941847176661283984791965834966631696051076262528745940769298868696107579034761436593806217923437841626526639372806656573633698650852482616808590385708358830902394453327887594268191034083157227661916409 . . . . . . . . . . . . . . . . . . . . [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) 2b8628048f77af49285e64596fe37f7b0af2b812 . . . . . . . . . . . . . . . . [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 'ct-stem.northwestern.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 (69 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 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [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) 00f1007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018741d35de00000040300473045022100ee11178528b9dfc3c0fe11bbcc27e0b3880e8a94a7293b59f186a86fa866a7ce02200421ed2bce174896c169666e42d1a16c073855ad0aaba68129c92b6b74474e25007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018741d35e060000040300483046022100a889cd9079206ec8e0b874e7379a4108346f7e9e615d3ce082e304d31ef7850f022100a2c75d6aa356df7b3a8af6bd3d11b895462cd2b83bc999ed1d7a14973d7bec71 . . . . [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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