people.kmi.open.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:6c:24:c6:0e:fd:fd:37:17:a3:7f:45:10:96:08:99:e2:7c was issued on by Let's Encrypt.
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We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=people.kmi.open.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:6c:24:c6:0e:fd:fd:37:17:a3:7f:45:10:96:08:99:e2:7cSerial Number (int): 298136234009445166738478703800561629258364
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 59:66:98:c5:56:d7:ba:ad:96:7a:cd:b0:53:8b:d8:0b:b5:cd:35:6b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 79:d2:aa:68:ba:46:45:8c:d8:a5:59:2b:72:86:d8:12:21:ae:73:89
Fingerprint (sha256): 0f:4e:66:93:d1:2a:7b:80:36:59:20:11:e7:f8:8b:66:a6:75:94:7e:a3:7b:4b:5b:0d:37:18:43:c8:20:3a:15
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate people.kmi.open.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for people.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
people.kmi.open.ac.uk
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Certificate
The complete raw certificate details for people.kmi.open.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFYzCCBEugAwIBAgISA2wkxg79/TcXo39FEJYImeJ8MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTExMDIyMzIyMzNaFw0y MDAxMzEyMzIyMzNaMCAxHjAcBgNVBAMTFXBlb3BsZS5rbWkub3Blbi5hYy51azCC ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALsOhrgBLxOjzUXenqe2smcp XwY5ossft6tp1yTrQzoEppOo406oXuiLYL6aPwfIUjY7HPm7ZdLEUlfMwPalCv7X Q6yk06QQLy7dPMsHXr5HN2eH85uOtJr9kruMHucFxR42Ecp9cuZSh0y/yfgj9ZoR m7LbHIFmCQVAK8I5+ou+GpCALmn0Mpb5cuBQKb74XAiJVn6TtFskhs3IymX/7iVr BKGMmdXq5cA2MC3d16rRKEmAieX5BsKOLwcF6O7ff/bhLS3h4Cir30N6SPWhUVLD Qp/RIhHdP3ah57/E6HfAnjFkj4lwvGBZeJ416xJbppCzYKrAD8NnhB9Vq6NoDEsC AwEAAaOCAmswggJnMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcD AQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUWWaYxVbXuq2Wes2w U4vYC7XNNWswHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYB BQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2Vu Y3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2Vu Y3J5cHQub3JnLzAgBgNVHREEGTAXghVwZW9wbGUua21pLm9wZW4uYWMudWswTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2BIHz APEAdwDwlaRZ8gDRgkAQLS+TiI6tS/4dR+OZ4dA0prCoqo6ycwAAAW4upFw+AAAE AwBIMEYCIQDOdQvZID8zUrHFAtbTjxHdUPEyBTQNxVFO08AIt2VCZwIhAMmDq3La IUgE+kmy2kHcPr1tbcQizuTz+rL415LD14yNAHYAsh4FzIuizYogTodm+Su5iiUg Z2va+nDnsklTLe+LkF4AAAFuLqRcMQAABAMARzBFAiAAqf12C0ZdnyNYmAPvxr73 ZgrxTZy+98u2n7xXUmCgdwIhANkn5DZXTUUB0yVfvOkfpyDpT1Tv+ri2bRTg6h/9 XGDAMA0GCSqGSIb3DQEBCwUAA4IBAQAdAi2sUyvCyeh8rSXkEpERawF1iCuT71i7 evdKklSnfXMN9Z/rfXiUMxrWUnBTIbgptyRJm3cyBJhhZ2f4SepzODBsQLr0XMzX +KuxnB1VPFxUrtttiJxZZhzlwnwPNSRFz3I5DzNQ6lcJ1x4H1mlscxa6xyOAY+BO OhMzVmvy/Tp3btql42fIlYUHp8ydLSGLGG9Yk1fKXVcxcLC7jWVQqzr/385EeJKO Nu/nKSKhTGkw/WRwMlI8v++5818tQgLmORQ8830wWlMKSnvSrGabUnD8g5XA/55b AkTDWox3YvP0bBxl4sccHu2RlTczHrJClVMFndmbcGyX2oXxz5w/ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuw6GuAEvE6PNRd6ep7ay ZylfBjmiyx+3q2nXJOtDOgSmk6jjTqhe6Itgvpo/B8hSNjsc+btl0sRSV8zA9qUK /tdDrKTTpBAvLt08ywdevkc3Z4fzm460mv2Su4we5wXFHjYRyn1y5lKHTL/J+CP1 mhGbstscgWYJBUArwjn6i74akIAuafQylvly4FApvvhcCIlWfpO0WySGzcjKZf/u JWsEoYyZ1erlwDYwLd3XqtEoSYCJ5fkGwo4vBwXo7t9/9uEtLeHgKKvfQ3pI9aFR UsNCn9EiEd0/dqHnv8Tod8CeMWSPiXC8YFl4njXrElumkLNgqsAPw2eEH1Wro2gM SwIDAQAB -----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 298136234009445166738478703800561629258364 . . . . . . . . [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 2019-11-02 23:22:33 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-31 23:22:33 +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 'people.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 23613726187129615921550794002305567405287152871773265403610091542659294390592615852982104798824435110160564365369281567168109712736606597995625591867627124424192853438725966540223894745230434796713007916494218304287006151627027842557118622433114159766278723187607145315675311875916867519768536365075118135131283677546908456734745801448859555710611383224892299993041193875569766892225545921365680294194667816345999731541792098234465431622397117585209913060119875186709548667025329378195174238851093817865226090924110310157296105925300575189963100504184462088598439754749841071015647954247454033529758773970406996446283 . . . . . . . . . . . . . . . . . . . . [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) 596698c556d7baad967acdb0538bd80bb5cd356b . . . . . . . . . . . . . . . . [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 (25 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'people.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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016e2ea45c3e0000040300483046022100ce750bd9203f3352b1c502d6d38f11dd50f13205340dc5514ed3c008b7654267022100c983ab72da214804fa49b2da41dc3ebd6d6dc422cee4f3fab2f8d792c3d78c8d007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e2ea45c310000040300473045022000a9fd760b465d9f23589803efc6bef7660af14d9cbef7cbb69fbc575260a077022100d927e436574d4501d3255fbce91fa720e94f54effab8b66d14e0ea1ffd5c60c0 . . . . [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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