ctf.uwaterloo.ca
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:68:0a:b5:5b:fd:a1:6f:d6:64:ac:d2:e0:eb:f7:5a:ed:f9 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=ctf.uwaterloo.ca
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:68:0a:b5:5b:fd:a1:6f:d6:64:ac:d2:e0:eb:f7:5a:ed:f9Serial Number (int): 296740457906541545440794114545908576873977
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: c3:d8:73:b9:a2:df:97:ab:d6:61:71:fb:df:9e:eb:b9:b7:41:8e:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 4a:b2:61:3f:b5:48:54:ce:db:2c:42:59:97:1b:da:0b:11:58:2f:3e
Fingerprint (sha256): 02:dc:a7:eb:4a:bf:0c:50:93:e1:10:cb:27:e5:9e:8d:a9:57:9d:4e:8b:04:b4:b1:58:17:54:98:85:b9:67:6f
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate ctf.uwaterloo.ca
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ctf.uwaterloo.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
ctf.uwaterloo.ca
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Certificate
The complete raw certificate details for ctf.uwaterloo.ca in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGWTCCBUGgAwIBAgISA2gKtVv9oW/WZKzS4Ov3Wu35MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA5MjIwNTQ3MDRaFw0x OTEyMjEwNTQ3MDRaMBsxGTAXBgNVBAMTEGN0Zi51d2F0ZXJsb28uY2EwggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQC87wm9yAkBu6tvomrV5V5CrVPIivnv 0brCXVlpdunubgTnoAXOYjd/rBT8O0ASyY4Ud1Nt1Xp7lJesso6Ni9R5uGclyDS8 vviq9rO2wGL7c1viwW81/a65qTSzJhLL9+IGQVH6KBDX5ke/Qz1LCGNb41Zu3ckS YWWUABgsKCGxkfUccqHAntRdSMYcfHV5viYwMRUMnhEDJ6aMyus8af0YRMDxqWEz 8JBVVn8vHRIPq4udV9UAaPmI1cCtyVBaqQwZOuC8t4DGE3AzAt4hgG8tgTWlsl4J lMQH5E0taVCowtvGZ/WRKcHctE3FurPehE5+Qpl05UeXLVQzBB8g5LCtLz0Lwpa0 fE3D+rczOa+AFdIvKRfrcB7iWZVWYhty6FL5XbdrGtWvBHz9/XhMn2Po7omNN/qQ 6Gt0cZSOuCVRuE+3K5dOcfeirbXnKZb4FIi7dXCUibawqUdHPOYgqzDi/eSoR60L FbxGNiud8125/58LE74f8B3dvN5sOtpmr+O2vnt+7mofDKbX1sU0VEGMYiYwUYYB 6CG1MM4TB3R9PyKVzgBXuLSN2adajRet7gRJcs+5qP2DPZk4A+AOCH6UB5k6SOkL 7EF8ALWK3wuW996m15mlUdPw/zo9bi/hoU2OIHIJBnlwjdEjlvxgMNjOAPkuw0Qh TWirEaCnh5ytUwIDAQABo4ICZjCCAmIwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBTD 2HO5ot+Xq9Zhcfvfnuu5t0GOnzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEGN0Zi51d2F0ZXJsb28u Y2EwTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQC BIH2BIHzAPEAdwB0ftqDMa0zEJEhnM4lT0Jwwr/9XkIgCMY3NXnmEHvMVgAAAW1X uUq2AAAEAwBIMEYCIQCV0fHIq3zbJIkJ9xMAxPCg8izBPCuGtIRC4JpfwonxrQIh AIlWrIJOkV8wR8UfAmLntd6zieE8IVKtxiAumQ4ZJ24XAHYAY/Lbzeg7zCzPC3KE J1drM6SNYXePvXWmOLHHaFRL2I0AAAFtV7lKxQAABAMARzBFAiA0BSUghjPuWrdj ESVnkR4gAvACq9ezHoMG/x+Q5rzhZAIhAIxLsrGhI594guJSo9T0r6G1r3XVO5Uq oNruEmL/Lbw7MA0GCSqGSIb3DQEBCwUAA4IBAQAg8tB0KYlrDkJ7JU2F+8sL9kcO DtBgLlwEhWkkSuysoUNxRIUBxnCf3WMGD6FNVaDC+txTwLO+BTP1zuNuxOj0GQDl 7epWNWolI5repnm+XGnxcH8uYzjEoujTjq/TM3Sw7FjurggpQdXwuHu9eZWb9Bnt VqAAGT796oA8lENQZltjwtoGlqy1Urx+x1mhTc+fu7/P75H20gzCCyPDTG0LzppJ jKhQwkT/eyiM4RXnVsxku7wMiTlmbbn3PuuEXRaTWtxKJvmH2FbhOtFPMNadUSRb pUX4MixigXOUKW2M8ip+IszCddV5uqHitOStWZDcW8hcamu5dObWSSZu+rIE -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvO8JvcgJAburb6Jq1eVe Qq1TyIr579G6wl1ZaXbp7m4E56AFzmI3f6wU/DtAEsmOFHdTbdV6e5SXrLKOjYvU ebhnJcg0vL74qvaztsBi+3Nb4sFvNf2uuak0syYSy/fiBkFR+igQ1+ZHv0M9Swhj W+NWbt3JEmFllAAYLCghsZH1HHKhwJ7UXUjGHHx1eb4mMDEVDJ4RAyemjMrrPGn9 GETA8alhM/CQVVZ/Lx0SD6uLnVfVAGj5iNXArclQWqkMGTrgvLeAxhNwMwLeIYBv LYE1pbJeCZTEB+RNLWlQqMLbxmf1kSnB3LRNxbqz3oROfkKZdOVHly1UMwQfIOSw rS89C8KWtHxNw/q3MzmvgBXSLykX63Ae4lmVVmIbcuhS+V23axrVrwR8/f14TJ9j 6O6JjTf6kOhrdHGUjrglUbhPtyuXTnH3oq215ymW+BSIu3VwlIm2sKlHRzzmIKsw 4v3kqEetCxW8RjYrnfNduf+fCxO+H/Ad3bzebDraZq/jtr57fu5qHwym19bFNFRB jGImMFGGAeghtTDOEwd0fT8ilc4AV7i0jdmnWo0Xre4ESXLPuaj9gz2ZOAPgDgh+ lAeZOkjpC+xBfAC1it8LlvfepteZpVHT8P86PW4v4aFNjiByCQZ5cI3RI5b8YDDY zgD5LsNEIU1oqxGgp4ecrVMCAwEAAQ== -----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 296740457906541545440794114545908576873977 . . . . . . . . [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 2019-09-22 05:47:04 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-21 05:47:04 +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 'ctf.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 770782421394097249754405355349938273394597376889363071320289098284682631521749675774525310934568962225765564448789563011189177035449245777540411540865766073185385462702622298220133888119605953687129719369509220629240553615971810442741887606132016649387527996989324572321769907654188371595066599112359221625517137981179834686554100789661854606598410805588424986673550762583194376453947390508678183936095711706978061645515044774172640969211365298840362584976206324259230774136095242667245358847162709014787930200419956470181923828107603736775215237895359487556175195565315789064933305144472003193380884226040007728577309383634603781493933846505599293946189455689059945696246592537659686596632032226316820996122754663977666294026390280109080669597678088906541496392410873228703164603394256774818807001919368164790562681599697923233559734790807128441141925382497186260712336132364345051712737484971622537824858074467353044873290151585277471004017209891140247435822071081985703764238663371682365210178140382699750655358424881773449773370998006490286579191493440776519861250755866514263018342888494115404925289649816824157877175856825208706993512076672593902442099028589948108909122067967394814526694784008780333526199178243209118053346643 . . . . . . . . . . . . . . . . . . . . [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) c3d873b9a2df97abd66171fbdf9eebb9b7418e9f . . . . . . . . . . . . . . . . [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 (20 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ctf.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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016d57b94ab6000004030048304602210095d1f1c8ab7cdb248909f71300c4f0a0f22cc13c2b86b48442e09a5fc289f1ad0221008956ac824e915f3047c51f0262e7b5deb389e13c2152adc6202e990e19276e1700760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016d57b94ac500000403004730450220340525208633ee5ab763112567911e2002f002abd7b31e8306ff1f90e6bce1640221008c4bb2b1a1239f7882e252a3d4f4afa1b5af75d53b952aa0daee1262ff2dbc3b . . . . [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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