xerte.cardiff.ac.uk
Issued by R3
About this certificate
This digital certificate with serial number 03:cd:ce:71:57:9f:20:1c:cb:7e:a1:95:a1:1d:d2:4c:c6:35 was issued on by Let's Encrypt.
This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
- DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
- Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
- Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)
Certificate Subject
CN=xerte.cardiff.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate will expire on
Certificate Details
Serial Number (hex): 03:cd:ce:71:57:9f:20:1c:cb:7e:a1:95:a1:1d:d2:4c:c6:35Serial Number (int): 331369152487926683743880619209600329893429
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 07:63:f2:0b:3d:a4:55:7f:1a:2e:2d:69:7e:a5:c3:eb:a4:b4:bc:1b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 1b:21:7f:9d:c7:c1:77:f6:d5:c3:26:7e:18:73:82:03:e2:fb:42:db
Fingerprint (sha256): 18:90:1d:5a:57:04:d5:b6:e0:c2:c4:49:6c:23:31:f6:77:32:73:d2:82:ec:f7:5b:4e:45:11:16:94:00:99:25
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate xerte.cardiff.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for xerte.cardiff.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
xerte.cardiff.ac.uk
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Certificate
The complete raw certificate details for xerte.cardiff.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIEADCCAuigAwIBAgISA83OcVefIBzLfqGVoR3STMY1MA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDA0MDMwNjA4MDNaFw0yNDA3MDIwNjA4MDJaMB4xHDAaBgNVBAMT E3hlcnRlLmNhcmRpZmYuYWMudWswggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK AoIBAQDl2CeIl/yTM9sN0Rblo9wgaI9EPtW4Hw5BCOU3vjwYgedL4BOTJM0G28V7 nl6BCpDeAgmTmZ6oBpFrvaoFQchlV2UUOsRk9Wlw5gOnM1eHmz6JOw24KzndlDg/ 4Qi9ZLyiDHs5Jrp2hRpTf2wj5YZaE5VPEfSHvnU6f87yMf0hlIbKXHkouJWmVELs KtngDbl36SaB/H31UU0zmzVwt4tl8pHzXaoQjZOK35lDlTzy+rrMAoEbPY72EiSg 95ByusEgHeyhR4tLvgSbtDqzGtOlvH6sNS7jCgAcrfKuS7XBtdOZEw2LKbsMfG/Q 2bMoJ9V5HEpc8QkLNrimlEPLutGPAgMBAAGjggEiMIIBHjAOBgNVHQ8BAf8EBAMC BaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAw HQYDVR0OBBYEFAdj8gs9pFV/Gi4taX6lw+uktLwbMB8GA1UdIwQYMBaAFBQusxe3 WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0 cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5j ci5vcmcvMB4GA1UdEQQXMBWCE3hlcnRlLmNhcmRpZmYuYWMudWswEwYDVR0gBAww CjAIBgZngQwBAgEwEwYKKwYBBAHWeQIEAwEB/wQCBQAwDQYJKoZIhvcNAQELBQAD ggEBALcmzDpYWVrfseGOFGZxc5Q1QHNRxj72vLk+WIUuaENrbuV10bTiYbF13wRW tBhQIj9Bn+vf3B4gAWnXPL0JBYJtDWkoBzQ8RMToqT07TYlRQEZ20MlpVo9eqCuO gSxn6f8gsyiiREtdOL6IArV10pSHtym/MM8BXOVTCHiZ0IPVtHG3z4ZAhR8L0mSX v0urRr3dvAQm4wYpKeU4jC0WlmyVDzfmcGQe5jLOjN7JJlG2efNI3W7GlOz/Yw/W 7tXVeoa+Zxnyt8lnPB6z7ukOITzXGeN4ukIHd107Gwm6FuWRS5dTMdK/Twve96j/ 4btO5qI12h4b0M8PVbxUeUJ7b7Q= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5dgniJf8kzPbDdEW5aPc IGiPRD7VuB8OQQjlN748GIHnS+ATkyTNBtvFe55egQqQ3gIJk5meqAaRa72qBUHI ZVdlFDrEZPVpcOYDpzNXh5s+iTsNuCs53ZQ4P+EIvWS8ogx7OSa6doUaU39sI+WG WhOVTxH0h751On/O8jH9IZSGylx5KLiVplRC7CrZ4A25d+kmgfx99VFNM5s1cLeL ZfKR812qEI2Tit+ZQ5U88vq6zAKBGz2O9hIkoPeQcrrBIB3soUeLS74Em7Q6sxrT pbx+rDUu4woAHK3yrku1wbXTmRMNiym7DHxv0NmzKCfVeRxKXPEJCza4ppRDy7rR jwIDAQAB -----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 331369152487926683743880619209600329893429 . . . . . . . . [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 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-03 06:08:03 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-02 06:08:02 +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 'xerte.cardiff.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 29015161558329713829310354254412837968960615928436907574955222391261559216766774408415931982468411018354454150730370462560688163047260155982370687152257728169647982916139096063807859970735727819348040780245007066932239668629199637957010212837701918517308699350990093674032702337401536551454240709197948804185027891497375966643208838390530674229909338972975677308010180368680599686257270303910279950879802761404333427853168544198892396357829349575734746249748940329591267922392378693379338605651650850057688155695269255470643894781115517752218579337803050807622731902895031546122861901406523046423067182743950999605647 . . . . . . . . . . . . . . . . . . . . [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) 0763f20b3da4557f1a2e2d697ea5c3eba4b4bc1b . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (23 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'xerte.cardiff.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 (12 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 1.3.6.1.4.1.11129.2.4.3 (CT Precertificate Poison) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . [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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