cst.cs.usask.ca
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:70:9e:f3:92:70:61:6f:6f:5c:20:c1:32:10:5d:0c:9d:e9 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=cst.cs.usask.ca
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:70:9e:f3:92:70:61:6f:6f:5c:20:c1:32:10:5d:0c:9d:e9Serial Number (int): 386772051543792246262768364146938767777257
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: af:6f:93:81:16:ab:b0:f2:cf:8a:83:e6:f1:71:c2:ab:91:33:34:76
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 27:b0:d3:04:d7:15:41:24:5c:30:3f:d3:48:d9:bd:3c:c7:22:6d:3d
Fingerprint (sha256): 0c:88:07:89:b3:f9:2a:2f:f9:97:52:fa:70:e9:d6:82:01:44:6b:10:4f:23:e2:31:b9:9a:b9:25:a1:3a:ae:55
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate cst.cs.usask.ca
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for cst.cs.usask.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
cst.cs.usask.ca
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Certificate
The complete raw certificate details for cst.cs.usask.ca in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFWDCCBECgAwIBAgISBHCe85JwYW9vXCDBMhBdDJ3pMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA3MTUyMjI1MTFaFw0x OTEwMTMyMjI1MTFaMBoxGDAWBgNVBAMTD2NzdC5jcy51c2Fzay5jYTCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBAMJaB4Yb9neNnpuAasyoix6wRWjT6AJr Oj81w53VI/Qh3biPTHwTcvFeoRw+wLFZJqvP3AK7YI+qPY4eV9gv4DZOeVDV8jUl Lx82O4ury3PCqaGbUhlsbUMvzLdrcM/DJAu7l9r1Mhk8H74hF85MqJGcV03xCXBy df81yng302Njn1SOGTLMXB9KUmZPgdTSfozbdyuGtAwj7bRS1a65uatjQU7lkKTS qYEzfw6c90k29xueKsngBlfc1UQJ0LpQ3laUEx8e1Z5V64stM+9WInnx1UmeNXT0 2s2qbn/kM2ONV6TmzZkmZXT4JEbeekzjVNNGAJXjOHDbBLcUUU/6SJ8CAwEAAaOC AmYwggJiMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYB BQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUr2+TgRarsPLPioPm8XHCq5Ez NHYwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUHAQEE YzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5cHQu b3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5cHQu b3JnLzAaBgNVHREEEzARgg9jc3QuY3MudXNhc2suY2EwTAYDVR0gBEUwQzAIBgZn gQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5s ZXRzZW5jcnlwdC5vcmcwggEGBgorBgEEAdZ5AgQCBIH3BIH0APIAdwDiaUuuJujp QAnohhu2O4PUPuf+dIj7pI8okwGd3fHb/gAAAWv39EzoAAAEAwBIMEYCIQCrTPrT GQA6lXrdGrwEK5DJwFs3kbKdE2iLWwZUXAnpcwIhAJaFLQ/0nj2oLATbpvxOC9Kh LkNfiXQ/r/OHRoPi6CZTAHcAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL 2I0AAAFr9/RM7QAABAMASDBGAiEAlj4vJw1wfD8u2ZQQsIsk8KmivBAr/mXAlgtm +utWK9wCIQD5rP0QunIecpp+GwoZKf9k0M2mjJAW0kjsCvY4VwVsyDANBgkqhkiG 9w0BAQsFAAOCAQEAbT34sIAYMsst5y3x5jjLHlz4xsDUwuHv1+F/wXEJTmnX37hT D7dLyqRgFEN7DBQUwBVpwILmc65v6dm3irgsrxoKI3v7bhYmtjlb0pVwVKmE+zYF AxOpdE+eU3SCDjl+pRY9/i5PzWzqB77SLKjlgZzETbP2w2tpCyZkQZt0t535peDn Wjf6cbwl6l9zCJD1ywDUE7YSBoFk8NokADqKymKcQFU7iI/2t9jqHdWVMFgm+Veu hvSaVmonXSzqhHiFvJg6TQoONeumIbntx7NBrVwkEOtj69qX1mdwWB30WLDZxra5 Jj+MK5NaFarxAWbxyZcQaJhW4MotUbmVcQkPTw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwloHhhv2d42em4BqzKiL HrBFaNPoAms6PzXDndUj9CHduI9MfBNy8V6hHD7AsVkmq8/cArtgj6o9jh5X2C/g Nk55UNXyNSUvHzY7i6vLc8KpoZtSGWxtQy/Mt2twz8MkC7uX2vUyGTwfviEXzkyo kZxXTfEJcHJ1/zXKeDfTY2OfVI4ZMsxcH0pSZk+B1NJ+jNt3K4a0DCPttFLVrrm5 q2NBTuWQpNKpgTN/Dpz3STb3G54qyeAGV9zVRAnQulDeVpQTHx7VnlXriy0z71Yi efHVSZ41dPTazapuf+QzY41XpObNmSZldPgkRt56TONU00YAleM4cNsEtxRRT/pI nwIDAQAB -----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 386772051543792246262768364146938767777257 . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-15 22:25:11 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-13 22:25:11 +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 'cst.cs.usask.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 24534626310300727356440501850678037772160542908958564692577867438467114220191990601703798067550791569045176515150496501117862147158453322319853521961106193016938635713602566024372605263269735894707207778193391156662921693094043170845307319439685975394476564784611661443506607185690920781246132849317183335080830573952033421249347233447047519176271224370045341314924465557886381083273019007335199818346013909804379658892744988610976293126340087459243308219046268924132488603314902155032103180343839042396576229106927380700601797889162459252648292915249576743318159801411599763238753878276597275453980354669721742362783 . . . . . . . . . . . . . . . . . . . . [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) af6f938116abb0f2cf8a83e6f171c2ab91333476 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (19 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cst.cs.usask.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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bf7f44ce80000040300483046022100ab4cfad319003a957add1abc042b90c9c05b3791b29d13688b5b06545c09e97302210096852d0ff49e3da82c04dba6fc4e0bd2a12e435f89743faff3874683e2e8265300770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016bf7f44ced0000040300483046022100963e2f270d707c3f2ed99410b08b24f0a9a2bc102bfe65c0960b66faeb562bdc022100f9acfd10ba721e729a7e1b0a1929ff64d0cda68c9016d248ec0af63857056cc8 . . . . [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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