secure.ckut.ca

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:c9:13:57:22:95:4d:5a:c6:af:45:74:3f:9d:0e:e0:0e:03 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=secure.ckut.ca

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:c9:13:57:22:95:4d:5a:c6:af:45:74:3f:9d:0e:e0:0e:03
Serial Number (int): 416871607241327086500346686709922783038979
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 70:9c:37:90:a9:ce:ff:e1:0f:e1:be:ef:a5:b7:c7:30:21:11:12:94
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 79:59:3a:af:ae:e5:fb:59:77:ac:99:13:69:b0:72:93:d5:ed:fe:35
Fingerprint (sha256): 80:90:21:fb:41:c0:a6:67:92:e7:9b:0c:a4:30:c6:d9:c1:e5:6c:02:df:d6:1b:e7:d5:fb:d9:8f:22:ab:67:63

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate secure.ckut.ca

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for secure.ckut.ca

Public Key Algorithm

RSA

Key Size

4096

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

secure.ckut.ca

Other certificates including the domain name ckut.ca

(limited to 100 certificates)

Certificate

The complete raw certificate details for secure.ckut.ca in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIGUzCCBTugAwIBAgISBMkTVyKVTVrGr0V0P50O4A4DMA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMjkxNzExMTdaFw0y
MDAxMjcxNzExMTdaMBkxFzAVBgNVBAMTDnNlY3VyZS5ja3V0LmNhMIICIjANBgkq
hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAySYJTgXsAJE7+YadhB7OT6nmISgs0RxC
pdBfDrEXVet0tRbM0T0zLfh5IKoIcOjv/0d1zViz2QtxAytDcvBMX4ouHItJW0DY
NnRNmSK1R4ohhxjOsbtPfoVHKh0nnkr9Kk6PAWuypv75N0ZWBRwF1ZRi+hjQLIH2
QcxnjA2F6JuCeqyD5W5TOCGCgHAe+ikxE/gziSuQ2ZCHJcbltldCcgeNGUTGcpmq
EfK+cUJ0VcklNfKvpTnSZAzoJLxEFJ3DOlOJGWLaxQnvNp1Jcg7iZ5c6pzylmMBc
KIrDT89mb3gmqsXDUXcTGUsiVfJ9RRAakZcqpiUSBX/cjZ+6sDzkEIxAYeVYjfSs
NWV+gUca47/5THF7gF1dUzYGrD5gtrhqZujL2qW/sz6zB4NBD0u9vx6Rx27QqzAd
618KGyH/O+D2ubne764BI9QppbXRWOGmg41oPl+0DF86hweDDvcBJXG8ILqwf4Gj
G9G1Hkd0+kF4WRwaIUvsUetyxtDOOPSSXSxn8sUBuwHeosy4ZDb0mPiJDCRfUz1o
8cZ1+iv2Htn/3rx5TiNGbjAJemMKmsHtGtvHeR1p/vkjXKcVxmJLdW7BiJGgzD3d
UoV9dmxILjiuVF+37AouobcB1dMnt1F0/dP3iZcwfIvkn/eutV0uYxj/YQj7pBEK
jmcu8JfK0BECAwEAAaOCAmIwggJeMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU
BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUcJw3
kKnO/+EP4b7vpbfHMCEREpQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo
7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt
eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt
eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg5zZWN1cmUuY2t1dC5jYTBM
BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB
FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQE
gfEA7wB2AG9Tdqwx8DEZ2JkApFEV/3cVHBHZAsEAKQaNsgiaN9kTAAABbhi3BY0A
AAQDAEcwRQIgNO6i7x7g2cXHT8yQDPFBjIJ3sIfthV3onTSJDcPwk4QCIQDB6Kty
aDxdn513uhIstZoliI+9VNCswLz/jHpp5wvztQB1AAe3XBvlfWj/8bDGHSMVx7rm
V3xXlLdq7rxhOhpp06IcAAABbhi3BYwAAAQDAEYwRAIgGO1LiinHaBsgfskvBqfi
l7bQRJtYanGyYqxnlsgg6UYCIEz4945dSfWJp/kA6z9fph5bRIbbary9EVBiA25I
ffA9MA0GCSqGSIb3DQEBCwUAA4IBAQAzvNj0PpNwAuuDB6dbwetlPWzTNh7FOmLq
9qlep2FKFJpqVW3Wh6ZeyZ2lIbmkrXnWOOWSuTCfVoTr4g6e0Gj0+d1r/FQdwv+p
MH5Bhgr9u0H1EVe9nQdqQ33RrJIlTGQJ7/UIahS/9pTJOr4lAK/FIvLwaKB4m3G+
ehClT17Vx1oP7XJ0psHg80JcecvS8rTDpubYN9NjHmNhjijG5iNLl21Rqe4nuzZh
tGekT4Y12upsraHkXYmidDRAy5Zkgkk70hgJ62byBAgM7G1Aa/KmxVA/n8na+pJg
Mmr2Frq1RQW3KF4AToHVe5EvTDeWUS0Y2VpDHpS1Yeq4QdP1oYB1
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 416871607241327086500346686709922783038979
 . . . . . . . . [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 2019-10-29 17:11:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-27 17:11:17 +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 'secure.ckut.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 820614609064799181052918373281164338461266187869015258315471082154721134319855506784423423901203921815567053121654357314456198944499816833952204821881104582966099162683971807397137810456242183457977988065877475346924078199682181654408281896762348733244030796056487998587239251473907648405165424474062811101456583012010234969247731006415855854335607227926253980943111060268029267795632173945373520640871810098076350809859207809203167491747808559978279547732742250400390588356947848188746072816110284956775041732364250052639792892027387233750533432118655445062759640405304884701745730546591393946099180508679919546034972872388742831051324320723845740476925163586442123476316777082339575941930719921981321672090587216480665046901071204101449348450350734426114144435133804108911325484423792286167526138857775646845799097999885753256143406401873124732101807365580215676235159607745207907141750591951359079586206723852185526099790044844057032532821748095898515569606514133007455210718758569554425543632046746564065563354343317823827369461751844385470764383683822160299853641112730873667762166623512548923473511889518041766197889780356934945144768552316405835862493901063217350998347348336936723052188590160443903085428825708355901140422673
 . . . . . . . . . . . . . . . . . . . . [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)
							709c3790a9ceffe10fe1beefa5b7c73021111294
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'secure.ckut.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016e18b7058d0000040300473045022034eea2ef1ee0d9c5c74fcc900cf1418c8277b087ed855de89d34890dc3f09384022100c1e8ab72683c5d9f9d77ba122cb59a25888fbd54d0acc0bcff8c7a69e70bf3b500750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e18b7058c0000040300463044022018ed4b8a29c7681b207ec92f06a7e297b6d0449b586a71b262ac6796c820e94602204cf8f78e5d49f589a7f900eb3f5fa61e5b4486db6abcbd115062036e487df03d
 . . . . [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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