www.theory.leeds.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
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Certificate Subject
CN=www.theory.leeds.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:77:36:85:86:a1:91:ed:8c:27:36:91:fb:90:04:00:62:45Serial Number (int): 389015217008531017885666978116520372101701
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: d9:9f:25:07:a3:60:42:83:79:65:a4:5d:8c:ca:1c:b2:ec:83:71:c1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 69:de:8a:68:4c:36:72:52:4e:f1:86:d1:1a:58:d3:4a:52:87:8a:1e
Fingerprint (sha256): 02:da:f0:0f:a3:9a:04:17:64:9b:b1:85:24:02:55:24:03:0a:8b:bb:c3:d9:63:88:b9:5a:20:98:56:f8:fb:0d
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.theory.leeds.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.theory.leeds.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
www.theory.leeds.ac.uk
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Certificate
The complete raw certificate details for www.theory.leeds.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFYzCCBEugAwIBAgISBHc2hYahke2MJzaR+5AEAGJFMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMjcwODI1MTNaFw0y MDAxMjUwODI1MTNaMCExHzAdBgNVBAMTFnd3dy50aGVvcnkubGVlZHMuYWMudWsw ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQD1/E/kfdFo8PkShIGJ5leX 0gcHWkaOtvpwKIO0smTHYRUYw1DPmnBcgNudeiUoliF/ZOGwSJS44v32R+flSbjP GfXGwumdrOmOFClMOdk2olXCgiF5Zcmmp3rtc65SMxv4zw1d8cBmb9Zj+du27HBR im5YLIlFgpe2DrGKeKm6YDt7tPOSGKQUh33mk5ux75IqP6eGMTnMgZqwPncfBUEs hDCwAOjq78pKOkCkF8AW5dVrz58sQCP2JudXzjqDvmqV5Wp/cdd53APdRzlw0n4V 66U63ugBfbJElcLMEoOVz8d3kOoTP5gBWGDNHCg7+II4EVYAcI9+/Nj/RTtxdZEr AgMBAAGjggJqMIICZjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFNmfJQejYEKDeWWk XYzKHLLsg3HBMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsG AQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNl bmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNl bmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIWd3d3LnRoZW9yeS5sZWVkcy5hYy51azBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQE gfEA7wB1ALIeBcyLos2KIE6HZvkruYolIGdr2vpw57JJUy3vi5BeAAABbgyIq0QA AAQDAEYwRAIgGkZNR+yxWjzHy2K/EkSAxeHEwXnWG7EL5pTFLelSQY8CIHJ3krqo NytiMRGZSW0NsZwdU/C4BSr8/loD3rHuiY6NAHYAb1N2rDHwMRnYmQCkURX/dxUc EdkCwQApBo2yCJo32RMAAAFuDIirbwAABAMARzBFAiEAjxVntbEkMvGiXoWx4r65 yeSA0vHNAmpGuDOpXl8zDHQCIHC25/2EKaNaFeA2J9+6W+kYi+mQH7EHTZLucOsu C/BmMA0GCSqGSIb3DQEBCwUAA4IBAQA33Wr103L8gRe1d/yCNuB79YX56DKlsnIW U9dDy/WcVPCKqq7nL3CddDTqm2RixDTIhFIE9XTzqY31KPaWiqdV3f6CChdYk1lZ Roodoj8QeC7mhXWacIcpT94wdJUjZMAJK5qub4qFMBnqj5qBT8/V6PUfPjz5rGTT avdDOxcz1ay3G0G5ThvNem8199VQs1n28cSdhcwR6gKoFMs47c75PKRAivpHtnUn DRDBwyEENe4Hr02bbxVLenDd3VLwogXaUgyjQGLNbN2ZacuWcg8hazIFbYmM7T9w TC5z07WESoMNEbLxIcEm/GzDxGxqm0d39+y87c1bDiJ8u3IpO491 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9fxP5H3RaPD5EoSBieZX l9IHB1pGjrb6cCiDtLJkx2EVGMNQz5pwXIDbnXolKJYhf2ThsEiUuOL99kfn5Um4 zxn1xsLpnazpjhQpTDnZNqJVwoIheWXJpqd67XOuUjMb+M8NXfHAZm/WY/nbtuxw UYpuWCyJRYKXtg6xinipumA7e7TzkhikFId95pObse+SKj+nhjE5zIGasD53HwVB LIQwsADo6u/KSjpApBfAFuXVa8+fLEAj9ibnV846g75qleVqf3HXedwD3Uc5cNJ+ FeulOt7oAX2yRJXCzBKDlc/Hd5DqEz+YAVhgzRwoO/iCOBFWAHCPfvzY/0U7cXWR KwIDAQAB -----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 389015217008531017885666978116520372101701 . . . . . . . . [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 2019-10-27 08:25:13 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-25 08:25:13 +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 'www.theory.leeds.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 31052804440643853316835829325363690522044254082398081433279516488308391638539857166944664792643411564166900219696794860659193407805692438831421623817895716503811370365766794572869091981547302952850141548607493618464845603981749879811703278882921627466303377740052948683301561215623458120354917492402698057338138065251865415662986550483396719783917505082063148410481757930163834415653750263469903861153784617805405672756280009432814492020120429391057156114908878666143310685186420108700644126119334165576646707877328934940509936896735183197357861109163186094523666156063736759786554797920585885329435014012619269181739 . . . . . . . . . . . . . . . . . . . . [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) d99f2507a36042837965a45d8cca1cb2ec8371c1 . . . . . . . . . . . . . . . . [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 (26 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.theory.leeds.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) 00ef007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e0c88ab44000004030046304402201a464d47ecb15a3cc7cb62bf124480c5e1c4c179d61bb10be694c52de952418f0220727792baa8372b62311199496d0db19c1d53f0b8052afcfe5a03deb1ee898e8d0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016e0c88ab6f00000403004730450221008f1567b5b12432f1a25e85b1e2beb9c9e480d2f1cd026a46b833a95e5f330c74022070b6e7fd8429a35a15e03627dfba5be9188be9901fb1074d92ee70eb2e0bf066 . . . . [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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