alumni.brighton.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:2c:47:15:79:b4:77:db:cb:42:b6:6d:57:4f:8d:42:a6:b9 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=alumni.brighton.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:2c:47:15:79:b4:77:db:cb:42:b6:6d:57:4f:8d:42:a6:b9Serial Number (int): 276403768634206516315830514798010789177017
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 90:be:3e:fc:bd:de:6c:bf:32:96:43:43:96:6f:74:3c:a1:f8:45:6e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 79:8f:da:36:4a:2c:90:a6:24:dd:cb:4b:c1:85:81:e7:c3:2f:bf:e4
Fingerprint (sha256): 06:89:5d:f1:bd:9e:91:3e:58:ad:a1:3c:b7:a1:b7:92:ba:9c:c9:bd:57:99:fc:db:99:63:f3:4c:d9:31:fd:b6
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate alumni.brighton.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for alumni.brighton.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
alumni.brighton.ac.uk
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Certificate
The complete raw certificate details for alumni.brighton.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFYDCCBEigAwIBAgISAyxHFXm0d9vLQrZtV0+NQqa5MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMDcxNzEyMDlaFw0y MDAzMDYxNzEyMDlaMCAxHjAcBgNVBAMTFWFsdW1uaS5icmlnaHRvbi5hYy51azCC ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMpEWO0TaA8gbP//wo7ANzyA gw0qkddZYUo5s2qbpSJEiKq1lBmIMIgpllUkAdbGK9Vao6tFiBLdjRwfnHMhCTWL czFwRDHrLDmEyDGcQKZLJyGqBX+neFhOgwuzmzgJugenRTAOS02LY47fmAEnPww4 vrSs3KCyZYLKeqocSmcvN7K6gczH02OfgoB9OtyNTQi4/dmHbPTPtqBrL3aJaDPu POMxXYlPfFd39hY6QMvGyNzWxakgjTzz8f1BHdc6rpn1qTIgcV9Ef8WMICHBlILz 9ljRn+tctoCHT6VcUkpkJztD2QMtgBGgjdS1tAyMoISj72sfylC34WiilVWFSPcC AwEAAaOCAmgwggJkMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcD AQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUkL4+/L3ebL8ylkND lm90PKH4RW4wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYB BQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2Vu Y3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2Vu Y3J5cHQub3JnLzAgBgNVHREEGTAXghVhbHVtbmkuYnJpZ2h0b24uYWMudWswTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggECBgorBgEEAdZ5AgQCBIHzBIHw AO4AdQAHt1wb5X1o//Gwxh0jFce65ld8V5S3au68YToaadOiHAAAAW7hj9S4AAAE AwBGMEQCIGDXZoohjgBAfn20gbouNIcXGt/JVYhCUScuX1sMxUeqAiBYtgHwxDXW n0STorZTj8bZbm2ypNl6zEH0Y3skJelqpAB1AG9Tdqwx8DEZ2JkApFEV/3cVHBHZ AsEAKQaNsgiaN9kTAAABbuGP1WcAAAQDAEYwRAIgXh7gYFxWIRrA07mf5MTRGDIT 26Snpb3X7FCsTzJna2ECIBOR2wALwErizVEWasXmWba9NX93auDS9NbZb1a6MkhC MA0GCSqGSIb3DQEBCwUAA4IBAQAoP/jurU8QwE+NYPLUoNLrb4ULq35jo9VXIE42 EnnmuP6jBL9Yrd9FJU8jI5o7KW8Dfp1PsLx/gWhMQ4vYv5Vex6k6Mm2tCvhYnn1s kPduMKZ1XaLkObmlFae4CZ/77bjYZtnsSHC75N/jYo2HOvoAIfCfUzAwukOaH4nG NVus0EWYr3QPbndxSe2u+8USfklQfGiRA/aJmrA7Ge0jK1t4RMjzSATmrAtgTQk7 Fy5UJmA3hH0IhNj9BIQOgIsVWCp//dhb5Z2uij5o2XdQ1GRJv/WUjOWC0IVd/ga3 4x8Z/LFd7OYVYLJF+PEq57h+n/qk0Qt5mpwBpKYP5uljiEXf -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAykRY7RNoDyBs///CjsA3 PICDDSqR11lhSjmzapulIkSIqrWUGYgwiCmWVSQB1sYr1Vqjq0WIEt2NHB+ccyEJ NYtzMXBEMessOYTIMZxApksnIaoFf6d4WE6DC7ObOAm6B6dFMA5LTYtjjt+YASc/ DDi+tKzcoLJlgsp6qhxKZy83srqBzMfTY5+CgH063I1NCLj92Yds9M+2oGsvdolo M+484zFdiU98V3f2FjpAy8bI3NbFqSCNPPPx/UEd1zqumfWpMiBxX0R/xYwgIcGU gvP2WNGf61y2gIdPpVxSSmQnO0PZAy2AEaCN1LW0DIyghKPvax/KULfhaKKVVYVI 9wIDAQAB -----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 276403768634206516315830514798010789177017 . . . . . . . . [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 2019-12-07 17:12:09 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-06 17:12:09 +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 'alumni.brighton.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 25533840946193822499361976414914364361222474975399864179027013897027855247930066250994406504151692914744429461635279211740372535957134966481808639866160721443350406732836261835882990733719368426613028947373548813347693246051077000051212275190711458416784872578108757218604894379376336017659158054738451136965684864120552552397645535766500941611384859497174837211658844982636951808176559542432953252307983661098920340330172578736878543706754738700432907585812555746293455168805367848127075529523119891707578014999910480590736374433060129335663801558226894298924406814643171594711571665517288446276894770698406355880183 . . . . . . . . . . . . . . . . . . . . [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) 90be3efcbdde6cbf32964343966f743ca1f8456e . . . . . . . . . . . . . . . . [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 'alumni.brighton.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 (243 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes) 00ee00750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ee18fd4b80000040300463044022060d7668a218e00407e7db481ba2e3487171adfc955884251272e5f5b0cc547aa022058b601f0c435d69f4493a2b6538fc6d96e6db2a4d97acc41f4637b2425e96aa40075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016ee18fd567000004030046304402205e1ee0605c56211ac0d3b99fe4c4d1183213dba4a7a5bdd7ec50ac4f32676b6102201391db000bc04ae2cd51166ac5e659b6bd357f776ae0d2f4d6d96f56ba324842 . . . . [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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