learning.buffalo.edu
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:59:36:47:6b:4c:fd:fd:db:d3:ff:0c:df:d5:f1:2b:77:74 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=learning.buffalo.edu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:59:36:47:6b:4c:fd:fd:db:d3:ff:0c:df:d5:f1:2b:77:74Serial Number (int): 291694137592411379163649358696848045078388
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: a8:19:47:ea:f8:38:73:12:8c:3f:1f:c0:cc:82:5c:42:56:a4:ab:b2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 69:54:8b:87:e3:21:81:c3:8f:4d:aa:af:c8:e7:e1:3e:3a:d9:a3:9d
Fingerprint (sha256): 02:3e:8f:6e:2e:94:6b:1a:1c:1e:93:6a:76:12:03:ab:6b:d2:c1:e0:c4:9f:20:48:52:15:32:be:4e:59:8e:43
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate learning.buffalo.edu
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for learning.buffalo.edu
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
learning.buffalo.edu
studio-learning.buffalo.edu
studio-learning.buffalo.edu
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Certificate
The complete raw certificate details for learning.buffalo.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFfDCCBGSgAwIBAgISA1k2R2tM/f3b0/8M39XxK3d0MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA0MjQxNTIzMTNaFw0x OTA3MjMxNTIzMTNaMB8xHTAbBgNVBAMTFGxlYXJuaW5nLmJ1ZmZhbG8uZWR1MIIB IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAodFIUm1hQDOLvko5k+B46d5l 9X8g6PWUGEh8p8lOiLZXnkYld3hI+frsQL7nTlaMkSq47UnP/R1fRiiTc8wV+07L ZpQ048dO5yKAUbluVvx0Pa67dIbcnOi1jfNBoUuk/kepPBs2ZbSl/motMg3oYQZv T7ZOSuYqPn/ZrDW2T8i+ZAIzKc7UlUjUdbAYd5kflGVuxpHhdC9JN4ojgtP21QN8 POsFC9Jy1tmtXYKNOhqCZMm+j0kcYRyT7GT2Q4Aw5pmQccElkAZ0sL+RyXK3s6+T Ml7w+L7nqogOAjlWa09xJ3F0JddKJUXT0rYaHQbafJaltYqdi1c2y4HTanKSdwID AQABo4IChTCCAoEwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMB BggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSoGUfq+DhzEow/H8DM glxCVqSrsjAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEF BQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5j cnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5j cnlwdC5vcmcvMDwGA1UdEQQ1MDOCFGxlYXJuaW5nLmJ1ZmZhbG8uZWR1ghtzdHVk aW8tbGVhcm5pbmcuYnVmZmFsby5lZHUwTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYL KwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlw dC5vcmcwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdQB0ftqDMa0zEJEhnM4lT0Jw wr/9XkIgCMY3NXnmEHvMVgAAAWpQKIIYAAAEAwBGMEQCIC2LZKBrbdZ1Pkuk061v jq33zDSNXP74nG/PcaO74MvoAiBOBEtDqONZ9Z1XPh0UPOGwSOU0mSbWJr+YiZOF 7vBWpwB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABalAohJEA AAQDAEcwRQIgGkkfQ8RaZlH3GasBrIlpulKZV4SqKhHTh4/Q0wSUbUQCIQDeN8Tt fX/3E+8OkFnexIbvYHsEwZY3VMjCSZKQ7ahcpDANBgkqhkiG9w0BAQsFAAOCAQEA ieGenGDt6lC2OdwpQH8En/kVif5KiCY4eAgMa0k0vyFRG5RORNbBPK+ehREM64JW cmshZNPZexZHfb4ne4HaayXQAACE/EnlN2D/iwmhqXakt2jIfZjFCvsbcsRUBjzN ti9jH1lbaGn1VC23e0AnpWBL7MjWP01Cvr5d3r/ZBK3PpiUefq9xxFhQLX1wb12E P0ZUvYHYytIKafiMEUuHMiD2bl4rvs8JHeu/A5j7eEUCaBbVN5DGIuM/s0JxcEHD Y+3LKuoLYvaxapLDc8nnNVvsvOldLFbQKpLzjDutqulWlppTAIv7zM4yTf/Zj4SF 0+VSOo+m5n4Kno/rlHCHoA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAodFIUm1hQDOLvko5k+B4 6d5l9X8g6PWUGEh8p8lOiLZXnkYld3hI+frsQL7nTlaMkSq47UnP/R1fRiiTc8wV +07LZpQ048dO5yKAUbluVvx0Pa67dIbcnOi1jfNBoUuk/kepPBs2ZbSl/motMg3o YQZvT7ZOSuYqPn/ZrDW2T8i+ZAIzKc7UlUjUdbAYd5kflGVuxpHhdC9JN4ojgtP2 1QN8POsFC9Jy1tmtXYKNOhqCZMm+j0kcYRyT7GT2Q4Aw5pmQccElkAZ0sL+RyXK3 s6+TMl7w+L7nqogOAjlWa09xJ3F0JddKJUXT0rYaHQbafJaltYqdi1c2y4HTanKS dwIDAQAB -----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 291694137592411379163649358696848045078388 . . . . . . . . [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 2019-04-24 15:23:13 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-23 15:23:13 +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 'learning.buffalo.edu' . . . . . . . . [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 20427568150457998742458297345348728103385877081685259964040278532484876360480825876376198031729532845461872939869870099628570147677758451717998231806764386556758097662318465967848337957658837446358877140891941567285136950271207936290315724118272777828923523089828933412117983799118780524533374417085755500791684212420927230454796940459477615309623805088562521522835358234087019400906157302630363193295750896130122197920554564023915594960712460348148209811475932820687109863775306000625921454259112308252069749942709445147839216709617009872637586945925407659037725385833100400486885069157924091517931211424980136006263 . . . . . . . . . . . . . . . . . . . . [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) a81947eaf83873128c3f1fc0cc825c4256a4abb2 . . . . . . . . . . . . . . . . [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 (53 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'learning.buffalo.edu' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'studio-learning.buffalo.edu' . . . . . . . . . . . . . . . . [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) 00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016a50288218000004030046304402202d8b64a06b6dd6753e4ba4d3ad6f8eadf7cc348d5cfef89c6fcf71a3bbe0cbe802204e044b43a8e359f59d573e1d143ce1b048e5349926d626bf98899385eef056a7007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016a50288491000004030047304502201a491f43c45a6651f719ab01ac8969ba52995784aa2a11d3878fd0d304946d44022100de37c4ed7d7ff713ef0e9059dec486ef607b04c1963754c8c2499290eda85ca4 . . . . [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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