stargroup.uwaterloo.ca
Issued by R3
About this certificate
This digital certificate with serial number 04:5b:b7:d3:d8:6d:71:23:06:75:9e:e2:1b:ae:58:69:f1:a5 was issued on by Let's Encrypt.
With 3 subject alternative names this certificate can be used to secure multiple fqdn's. 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=stargroup.uwaterloo.ca
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:5b:b7:d3:d8:6d:71:23:06:75:9e:e2:1b:ae:58:69:f1:a5Serial Number (int): 379659187804383535466866743485748147253669
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 60:51:94:d5:09:43:f4:70:90:28:30:f9:ed:80:6d:c2:54:9c:f1:0b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): a8:89:a8:d5:06:a3:92:7a:c3:d4:bf:3f:c3:22:55:92:e7:f4:4d:cc
Fingerprint (sha256): 03:ba:f6:a0:08:c8:75:1e:c0:19:4f:ef:dd:0a:6a:76:49:90:9e:5f:f6:a3:8a:97:ea:4e:16:8b:2a:27:5f:1f
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate stargroup.uwaterloo.ca
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for stargroup.uwaterloo.ca
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
stargroup.uwaterloo.ca
starlinux.uwaterloo.ca
www.stargroup.uwaterloo.ca
starlinux.uwaterloo.ca
www.stargroup.uwaterloo.ca
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Certificate
The complete raw certificate details for stargroup.uwaterloo.ca in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFZjCCBE6gAwIBAgISBFu309htcSMGdZ7iG65YafGlMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA0MDMxOTMxMDVaFw0yMzA3MDIxOTMxMDRaMCExHzAdBgNVBAMT FnN0YXJncm91cC51d2F0ZXJsb28uY2EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw ggEKAoIBAQDAWFByQ9/Vi+ecajpRTw7MuXzdXk91cQy1eCk3doAPLPCWEKL1Ryc9 IyrF5G+Uzw9OcsPuwX7Z58t25tCbuTGk9jcOXm2mEK+vjMK6lnmwB+DV+8Jf/PlP 6nOhbzIz82L50xL2GNrDzpmWDZUEtZi540w0vO2TkmevA13QuBlvGtufFDqjxCFh F3xj/Nfpgch02fLoq1XrznWpKc8ZiZJSz7auw2w0LD3klUXfQN3YY2Q3eIG4eHHO n4fNSfrxGlRffcb5R5FV8d9mqvoQoIQ08wb1GwKY+7AnXbo5su3cPI2he6vA71/S I4ASAJZ0fVJ+PcO3cRud89f/rK5RNehRAgMBAAGjggKFMIICgTAOBgNVHQ8BAf8E BAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQC MAAwHQYDVR0OBBYEFGBRlNUJQ/RwkCgw+e2AbcJUnPELMB8GA1UdIwQYMBaAFBQu sxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYV aHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5s ZW5jci5vcmcvMFUGA1UdEQROMEyCFnN0YXJncm91cC51d2F0ZXJsb28uY2GCFnN0 YXJsaW51eC51d2F0ZXJsb28uY2GCGnd3dy5zdGFyZ3JvdXAudXdhdGVybG9vLmNh MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUH AgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB 9QSB8gDwAHUAejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6V6NS61IAAAGHSNDz uAAABAMARjBEAiB3qniFGuHvCKdjUUQY2MPakziDC3H0aYqoa/xqEWiZ9AIgT4A6 hj9F6z8kO/9gap+UeLKp/pXUEmUcxRN8542pNecAdwDoPtDaPvUGNTLnVyi8iWvJ A9PL0RFr7Otp4Xd9bQa9bgAAAYdI0POjAAAEAwBIMEYCIQDn7sCi1+TFCsdIpWTf QlHFV7GL1fboltvOLv4jcseyeQIhAMNNGrXwYkfsLzpF09UElh4t36GDcsb2rCM1 lEcYaV8EMA0GCSqGSIb3DQEBCwUAA4IBAQAlrJLVAQF2dYbDPBLzeXl9g85tTibU yVvELAHtYrB/jkUtikOefc7uwy79QBSevDnH6ezNC0euYBGm8KZxunouuMEbuAct MNr6hnrF20JC29chkZ8M4vKbPrbcLdifhzYs8c9p0RjjYLNSf4c5+jDqxoygnpXT OaBaYxzTI18vWaFawL3biTm+ZFs+osJjbfm5286ML2SireoH9jxnlp2vQkKNry++ eXFYM8/6LGuPHFO1/Ao3Du1eL7UscOMrIJzXnyw7WZVBMFGBHy9uqZ3vOniCQH7K XAVzxYdnASJhgO7PcmjFkUM5VmgYIL3N9Ro4QXjjbJOd+pyj2jfIQUDv -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwFhQckPf1YvnnGo6UU8O zLl83V5PdXEMtXgpN3aADyzwlhCi9UcnPSMqxeRvlM8PTnLD7sF+2efLdubQm7kx pPY3Dl5tphCvr4zCupZ5sAfg1fvCX/z5T+pzoW8yM/Ni+dMS9hjaw86Zlg2VBLWY ueNMNLztk5JnrwNd0LgZbxrbnxQ6o8QhYRd8Y/zX6YHIdNny6KtV6851qSnPGYmS Us+2rsNsNCw95JVF30Dd2GNkN3iBuHhxzp+HzUn68RpUX33G+UeRVfHfZqr6EKCE NPMG9RsCmPuwJ126ObLt3DyNoXurwO9f0iOAEgCWdH1Sfj3Dt3EbnfPX/6yuUTXo UQIDAQAB -----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 379659187804383535466866743485748147253669 . . . . . . . . [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 2023-04-03 19:31:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-02 19:31:04 +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 'stargroup.uwaterloo.ca' . . . . . . . . [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 24281303930084060752547515871684341599914339876763595537000278370104195989854240765989005990329391778433087370440244139707978430446020075790466891871133430860950699460389187004787981512493232552923017705490760914816751767516720646652345669576460948113150307733546073464397254681028925067700612236680375030081085047728503869387732449912906380113179257997884591282353970135531995703125156016569857796450431528137729813741563867806920670138972646815225010996912861072480938773835815071301471714986155849975856919092937582133452826759549313278851268620548599302186149992060182965532657887362932417600875425930029951215697 . . . . . . . . . . . . . . . . . . . . [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) 605194d50943f470902830f9ed806dc2549cf10b . . . . . . . . . . . . . . . . [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 (78 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'stargroup.uwaterloo.ca' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'starlinux.uwaterloo.ca' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.stargroup.uwaterloo.ca' . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f00075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018748d0f3b80000040300463044022077aa78851ae1ef08a763514418d8c3da9338830b71f4698aa86bfc6a116899f402204f803a863f45eb3f243bff606a9f9478b2a9fe95d412651cc5137ce78da935e7007700e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018748d0f3a30000040300483046022100e7eec0a2d7e4c50ac748a564df4251c557b18bd5f6e896dbce2efe2372c7b279022100c34d1ab5f06247ec2f3a45d3d504961e2ddfa18372c6f6ac2335944718695f04 . . . . [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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