blockchain-group.cs.uwaterloo.ca
Issued by R3
About this certificate
This digital certificate with serial number 03:bc:bc:73:82:54:78:84:1b:78:de:6f:cf:d8:6e:cb:87:2a 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=blockchain-group.cs.uwaterloo.ca
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:bc:bc:73:82:54:78:84:1b:78:de:6f:cf:d8:6e:cb:87:2aSerial Number (int): 325560437397169178795304964033932249761578
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 15:db:ad:b9:b8:4f:d1:00:21:b4:fc:60:67:e7:e0:c6:e2:83:c8:00
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): e7:65:46:cb:82:72:08:7f:ad:bb:6a:80:12:25:ed:44:fa:16:10:25
Fingerprint (sha256): 01:70:62:44:09:c1:47:1b:d0:0a:8e:15:aa:b4:b3:73:9d:b9:b9:0c:39:07:68:b2:b5:49:aa:fa:0f:af:20:ee
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate blockchain-group.cs.uwaterloo.ca
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for blockchain-group.cs.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
blockchain-group.cs.uwaterloo.ca
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Certificate
The complete raw certificate details for blockchain-group.cs.uwaterloo.ca in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFRTCCBC2gAwIBAgISA7y8c4JUeIQbeN5vz9huy4cqMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzAzMTIwNzQ4NTFaFw0yMzA2MTAwNzQ4NTBaMCsxKTAnBgNVBAMT IGJsb2NrY2hhaW4tZ3JvdXAuY3MudXdhdGVybG9vLmNhMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEA9I7yigDcSLlaMVW37wCOExrKrXpft0ynor7phOC3 Hy3eCcCAzmH5qrRjnsdl0kUiM87QCYYArtVSyou/soaRuMMWOVQIiPueaY93rl6P c1o8E8XQxhcOzhgvwjjAcOQdjUeMFWNxL1SvbtV7y2cYW748v4pf8Kakv9zLvhUv d15KzH8QnXe1fyVOFG4UqXLsQHqSderjx0sSgwtDL1wdB4iGJD01IM+H5rNpvMGR JHft8FObg4ylIOGsSuJX9X5gTXmYTfqyQkzwjZu+/nMc6SVx8jvzs788/lHkfD4o v66XVXd4WCUtxfkyL67avFEx7NoZXWOcrqZuirgBf/alvwIDAQABo4ICWjCCAlYw DgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAM BgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQV2625uE/RACG0/GBn5+DG4oPIADAfBgNV HSMEGDAWgBQULrMXt1hWy65QCUDmH6+dixTCxjBVBggrBgEFBQcBAQRJMEcwIQYI KwYBBQUHMAGGFWh0dHA6Ly9yMy5vLmxlbmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0 cDovL3IzLmkubGVuY3Iub3JnLzArBgNVHREEJDAigiBibG9ja2NoYWluLWdyb3Vw LmNzLnV3YXRlcmxvby5jYTBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLf EwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCC AQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1AHoyjFTYty22IOo44FIe6YQWcDIThU07 0ivBOlejUutSAAABhtUCH1wAAAQDAEYwRAIgPQFuM94NvPtJwxY6D8HrVIJ3fe5Z HujH+j+NJ70G4HwCIAdGK3A/GNj86F8xzx9YGVMYs0OB9oPYxnkz0VMXJev1AHYA rfe++nz/EMiLnT2cHj4YarRnKV3PsQwkyoWGNOvcgooAAAGG1QIfcgAABAMARzBF AiEAzpRsemOlIYKqOGWnO++hlNGFeq1JkQbEAPt/bYusrXQCIDl9cFDMdhha7Zit se3bwjog7H9tGwA7q5wudzLDKfXzMA0GCSqGSIb3DQEBCwUAA4IBAQBsgwrHxJuS Zg3Gp8yNiCHC5hBE7h21/eWN8bH8VxZt2fiflEhoLdnn9uC75FIDvKs2gEH964C0 YN0GP7U1p2yZWoE3hU7UV9OHip84fVcNSqpdiULWaPcCol4hVffVIyNx2of4fBrx /QA4qz1hev1Oki/KfO08gYcFDQTeQj9wfVB4hylizt/YBw4Nsadsz+VHDgjJYZ9T 7ChkBdyBBVvqDcoLw68es77zgBJLynSNNfKl6eDYQLR0t1/hNq5iG7/v+18y2EBN djGeelorKBmQ5PHP2Y65kL9rr75S3Ocj/mff0fajnAUYNo8RaBPYS22hZTycwdlh lPq1h0AokSMf -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9I7yigDcSLlaMVW37wCO ExrKrXpft0ynor7phOC3Hy3eCcCAzmH5qrRjnsdl0kUiM87QCYYArtVSyou/soaR uMMWOVQIiPueaY93rl6Pc1o8E8XQxhcOzhgvwjjAcOQdjUeMFWNxL1SvbtV7y2cY W748v4pf8Kakv9zLvhUvd15KzH8QnXe1fyVOFG4UqXLsQHqSderjx0sSgwtDL1wd B4iGJD01IM+H5rNpvMGRJHft8FObg4ylIOGsSuJX9X5gTXmYTfqyQkzwjZu+/nMc 6SVx8jvzs788/lHkfD4ov66XVXd4WCUtxfkyL67avFEx7NoZXWOcrqZuirgBf/al vwIDAQAB -----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 325560437397169178795304964033932249761578 . . . . . . . . [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 2023-03-12 07:48:51 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-06-10 07:48:50 +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 'blockchain-group.cs.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 30872636410862617236143299003650634937650439783431603913448394302373603025899120869454497097673056961725406715005754584896877138960904577859145856311545598924418300727182089533159264560170850379086749299210546918093566529255139717744998874395459320275876206614346986951225297185916847987623093635956439594802116107947334978592367493528465435016542510342981881666389926892760864274452143272659068599661990745528287875666550123577946668830411881730241517382320468195151401815206586324943456188322707501649598886482963526083034243534873463640632983314440786325864538323241887794608023831620524975418671530058184150918591 . . . . . . . . . . . . . . . . . . . . [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) 15dbadb9b84fd10021b4fc6067e7e0c6e283c800 . . . . . . . . . . . . . . . . [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 (36 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blockchain-group.cs.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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000186d5021f5c000004030046304402203d016e33de0dbcfb49c3163a0fc1eb5482777dee591ee8c7fa3f8d27bd06e07c022007462b703f18d8fce85f31cf1f58195318b34381f683d8c67933d1531725ebf5007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000186d5021f720000040300473045022100ce946c7a63a52182aa3865a73befa194d1857aad499106c400fb7f6d8bacad740220397d7050cc76185aed98adb1eddbc23a20ec7f6d1b003bab9c2e7732c329f5f3 . . . . [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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