skm.kmi.open.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:f2:e9:71:7a:f5:8b:6b:9c:0b:30:62:d5:8a:5a:26:40:6b was issued on by Let's Encrypt.
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- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=skm.kmi.open.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:f2:e9:71:7a:f5:8b:6b:9c:0b:30:62:d5:8a:5a:26:40:6bSerial Number (int): 343995489936618767901738956755400969830507
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: fc:98:b3:38:e8:29:82:c3:20:51:c3:25:d7:d1:d0:77:da:9d:93:b6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9a:b3:4a:13:d1:12:c6:26:68:b2:5b:f6:65:3d:2c:f8:f5:19:e5:3f
Fingerprint (sha256): 03:79:74:90:ab:30:68:46:4f:f1:13:54:ec:87:bb:95:e4:b3:49:66:07:38:90:dc:67:81:b0:cd:33:1c:55:eb
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate skm.kmi.open.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for skm.kmi.open.ac.uk
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
skm.kmi.open.ac.uk
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Certificate
The complete raw certificate details for skm.kmi.open.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFWzCCBEOgAwIBAgISA/LpcXr1i2ucCzBi1YpaJkBrMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMjcxOTA1MzRaFw0x OTA0MjcxOTA1MzRaMB0xGzAZBgNVBAMTEnNrbS5rbWkub3Blbi5hYy51azCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMOr46NtCHHiClKzmpS+Mv2eA6tN kacrQ16cns9Dn3Wp7wRrVWawIo1ftufTdPv1zZKybjA6E32HIdW1Xyr+QRsZD5yO QBcqqrhgyPMcL9mJwhTX+8LtfSlaA5ra8j2DxiywXLTCqmxO36d5PPkg8JJ3GU/a dSfu8b5mfGiNgQU0T+/bkLn8+mA7i5nvJg5S31JZ4rFaw4AdlOOD7iycRV9SJJOv cu3ZB2PKjyUtLMYSk+YxafbRTJ65cCwpBq4h9u28gmTBsQI+l2d9GE6hWYzEVGzm ubqPnKupQRqg0EU1tyTZ76rpEdeD3a7caYgfHQHGVtvapFLhsV8ZAixJYnUCAwEA AaOCAmYwggJiMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYI KwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU/JizOOgpgsMgUcMl19HQ d9qdk7YwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUH AQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5 cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5 cHQub3JnLzAdBgNVHREEFjAUghJza20ua21pLm9wZW4uYWMudWswTAYDVR0gBEUw QzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDov L2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdQB0 ftqDMa0zEJEhnM4lT0Jwwr/9XkIgCMY3NXnmEHvMVgAAAWiQ6tAMAAAEAwBGMEQC IFNqQtRqO9n6DW9NAprlEcfjnfM81agtYLn926NzCLvUAiA444nJdyoX//Fa2jgM 03Ce8Nxbj3dGF8/nZ1f+qj/MbwB2AGPy283oO8wszwtyhCdXazOkjWF3j711pjix x2hUS9iNAAABaJDq0hMAAAQDAEcwRQIgHcQ6Ax1DNd1NumSw0o18k4QJCMu9+VCf J+fZCoHeWbkCIQCm/v9tmX+CS2VmrcWMLCVrr4KyMqzfP95vbRsjNYNKNTANBgkq hkiG9w0BAQsFAAOCAQEAT0ESjPND9bLSbUQlQHFvxjtswc2hIXFdDllMCYepGrjq acXjtcZlyMZmGbZM7dQQBuNiwgLQ3UL+ax/DK31t4Bj7d52AGIrBiXPI7N2fTSuf gsqWk9bLjmxqMEVNJ9lT6T2rku0cnuGYAmcYG62GtWFVFvj0pZa51o5sJlCFzODa Du1lI7jH0IYMjG8XKrrRA4v2ksg+Pv7NtWagpUqHHEV83uefSawuCCv4YpfL6Xqu PiqS2hEm37ZsnrNN4M4FEGtmnorqSwlf04Ju2CkcerEWCdkGqm6BVJ/5f//5PNqJ rF+6mBdfpiu6OsLYgUY3DJgXRvTOUjVzhExYXgzEaA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw6vjo20IceIKUrOalL4y /Z4Dq02RpytDXpyez0OfdanvBGtVZrAijV+259N0+/XNkrJuMDoTfYch1bVfKv5B GxkPnI5AFyqquGDI8xwv2YnCFNf7wu19KVoDmtryPYPGLLBctMKqbE7fp3k8+SDw kncZT9p1J+7xvmZ8aI2BBTRP79uQufz6YDuLme8mDlLfUlnisVrDgB2U44PuLJxF X1Ikk69y7dkHY8qPJS0sxhKT5jFp9tFMnrlwLCkGriH27byCZMGxAj6XZ30YTqFZ jMRUbOa5uo+cq6lBGqDQRTW3JNnvqukR14PdrtxpiB8dAcZW29qkUuGxXxkCLEli dQIDAQAB -----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 343995489936618767901738956755400969830507 . . . . . . . . [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 2019-01-27 19:05:34 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-27 19:05:34 +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 'skm.kmi.open.ac.uk' . . . . . . . . [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 24701231198144329898173257012001431581891019798014482358265196331347321736487391189620039761896130724598112878676873468644129396475375762617570577601138445740007577941736795757427563175521253296383595378556695288832996274410683355571409450416590263484593115403130920165610158031778451497123445632911058198428261928496931292420207635198626222987207806340037331998817119804725259360081129182151420744798190754189446490932795996275134316018239779818240411242329214780282926107456832676889425297151470516754437559314620898250507819420096447332868435727356150542706139196625459083651539690086569530169198628198556545671797 . . . . . . . . . . . . . . . . . . . . [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) fc98b338e82982c32051c325d7d1d077da9d93b6 . . . . . . . . . . . . . . . . [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 (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'skm.kmi.open.ac.uk' . . . . . . . . . . . . . . . . [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) 00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016890ead00c00000403004630440220536a42d46a3bd9fa0d6f4d029ae511c7e39df33cd5a82d60b9fddba37308bbd4022038e389c9772a17fff15ada380cd3709ef0dc5b8f774617cfe76757feaa3fcc6f00760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016890ead213000004030047304502201dc43a031d4335dd4dba64b0d28d7c93840908cbbdf9509f27e7d90a81de59b9022100a6feff6d997f824b6566adc58c2c256baf82b232acdf3fde6f6d1b2335834a35 . . . . [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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