ulearn.utoronto.ca
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:2f:29:b1:a3:ef:ea:60:c5:b6:4d:32:f0:8d:e5:50:93:51 was issued on by Let's Encrypt.
With 2 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=ulearn.utoronto.ca
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:2f:29:b1:a3:ef:ea:60:c5:b6:4d:32:f0:8d:e5:50:93:51Serial Number (int): 364497835681737069303530911405204084659025
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: b2:ca:23:da:0b:a4:90:eb:89:03:d8:ca:bf:c5:f0:92:2c:28:25:79
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f8:12:e3:1e:d8:a4:56:3b:38:bc:19:38:09:76:56:b5:db:39:7c:5d
Fingerprint (sha256): 02:d0:81:97:71:b7:35:28:cc:00:26:9d:e7:e1:35:2e:e9:d2:13:3f:71:02:3f:3a:0d:1e:17:22:d8:22:f1:07
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate ulearn.utoronto.ca
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ulearn.utoronto.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
ulearn.utoronto.ca
www.ulearn.utoronto.ca
www.ulearn.utoronto.ca
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Certificate
The complete raw certificate details for ulearn.utoronto.ca in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFdTCCBF2gAwIBAgISBC8psaPv6mDFtk0y8I3lUJNRMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDA0MDkxNTI1MDlaFw0y MDA3MDgxNTI1MDlaMB0xGzAZBgNVBAMTEnVsZWFybi51dG9yb250by5jYTCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAN5ZD+Y/HbghVDLtEzD8EMjeBhZ0 bm5Mr69DJWRuM2tYrNmTANX860dAhEQswNGqWmDRNX7KPVXi63vwr89BmNC/2dye 34ONl8PQnkK9x//iafQbNHxncwklBc0ZPM/etAQzth0rUNtic9qPq017rbYnBzr9 ojr66oryj3B4agwu5JWYEfHySfNgDnlOoqFSY7PqQrTIo0McMK8kevS6s1OZPkiL esAM69jzXR0tx5krjLYkAgkE8VrDxi0psHCqXzUkJkezOO5SbjflWJcmlnXoDqxu +yBPDq8RhlEqPe6X3PS+v6ls/EwtLbZZIBTerdjnIpdJVA1tQYRD3Rc8LoECAwEA AaOCAoAwggJ8MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYI KwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUssoj2gukkOuJA9jKv8Xw kiwoJXkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUH AQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5 cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5 cHQub3JnLzA1BgNVHREELjAsghJ1bGVhcm4udXRvcm9udG8uY2GCFnd3dy51bGVh cm4udXRvcm9udG8uY2EwTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMB AQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEF BgorBgEEAdZ5AgQCBIH2BIHzAPEAdgDwlaRZ8gDRgkAQLS+TiI6tS/4dR+OZ4dA0 prCoqo6ycwAAAXFfwmzZAAAEAwBHMEUCIQCYW10g8uDZPM9Ow/P5EKTFwiPunB0P c01EvA/QJi5HAQIgLd2CE/dmVLfD2FOJHWdxQZrznn768M/ouTMumQxVUPYAdwAH t1wb5X1o//Gwxh0jFce65ld8V5S3au68YToaadOiHAAAAXFfwmz7AAAEAwBIMEYC IQC3NakSqTfGcaqFPpLEWfSR+O1GUrR0D8Dos7Y/OyMcqgIhAI90JhQI4SW0ZleO GMMcFBA9JH5RHN6ltPLGWu+3y5CcMA0GCSqGSIb3DQEBCwUAA4IBAQAdv6WEfOnd BUDegR2YC6J9uj8+Ruac6RtZO6zp3aKQLAdqQSgfxeWumQrcAXNldEGPFPCJDVWS NP1bAOIts1/stuw28+it4q6LpRnRQ8DVhDpdHF5/jv8MpRp+FxjxXItycK0ggMNg 7DYyBBHYVe/3vwtOgCmwiwPTdNk4TamHRHInOznlmHB1dMXAGbCYgaid/ZQneB17 25LFBGpzjAJOrlaPIve4pcM/xAs3NXDP03I81q12+dgKJWEO85vq3H/T3EIMVEFW IF3X3vFwhxJ7/0BDQz85yPgZv1KatbyTpEe3nhR4+uKFSN5cklfz435cva5TZDHO IQbOoGnTJTiR -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3lkP5j8duCFUMu0TMPwQ yN4GFnRubkyvr0MlZG4za1is2ZMA1fzrR0CERCzA0apaYNE1fso9VeLre/Cvz0GY 0L/Z3J7fg42Xw9CeQr3H/+Jp9Bs0fGdzCSUFzRk8z960BDO2HStQ22Jz2o+rTXut ticHOv2iOvrqivKPcHhqDC7klZgR8fJJ82AOeU6ioVJjs+pCtMijQxwwryR69Lqz U5k+SIt6wAzr2PNdHS3HmSuMtiQCCQTxWsPGLSmwcKpfNSQmR7M47lJuN+VYlyaW degOrG77IE8OrxGGUSo97pfc9L6/qWz8TC0ttlkgFN6t2Ocil0lUDW1BhEPdFzwu gQIDAQAB -----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 364497835681737069303530911405204084659025 . . . . . . . . [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 2020-04-09 15:25:09 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-08 15:25:09 +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 'ulearn.utoronto.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 28068821864295538721996817884795647714076783790597509930439388554944786152576747147571118665606920738360189410434065114115235660754679631694352377365974335237494708914172314781383046019220037568724605550146560751778864604339279320421766400528456916582393447500466434526160548487682032451752254820711311255963769897531231606398759539424434679414561016799355538330699981847619781126804535801177115549539364860668746861241419900507328217710429682175826980722341512934988122561870007841184915286718657703025601075824184300066623737940399564450512576974406993280806856849115710670730131683548535354798582831518253181578881 . . . . . . . . . . . . . . . . . . . . [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) b2ca23da0ba490eb8903d8cabfc5f0922c282579 . . . . . . . . . . . . . . . . [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 (46 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ulearn.utoronto.ca' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ulearn.utoronto.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) 00f1007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb273000001715fc26cd90000040300473045022100985b5d20f2e0d93ccf4ec3f3f910a4c5c223ee9c1d0f734d44bc0fd0262e470102202ddd8213f76654b7c3d853891d6771419af39e7efaf0cfe8b9332e990c5550f600770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001715fc26cfb0000040300483046022100b735a912a937c671aa853e92c459f491f8ed4652b4740fc0e8b3b63f3b231caa0221008f74261408e125b466578e18c31c14103d247e511cdea5b4f2c65aefb7cb909c . . . . [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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