hackzurich.davidkeller.me
Issued by R3
About this certificate
This digital certificate with serial number 04:56:ac:f4:c6:94:ac:63:bd:18:f4:09:f7:0b:73:69:34:65 was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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:
- 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=hackzurich.davidkeller.me
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:56:ac:f4:c6:94:ac:63:bd:18:f4:09:f7:0b:73:69:34:65Serial Number (int): 377943325445646404045901481588225053635685
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: f1:66:f8:61:e7:82:0e:60:5b:4e:c6:07:92:05:30:b4:6a:69:d4:f0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): d9:56:d9:a7:96:5a:c1:99:fa:40:05:84:8c:cf:12:91:ba:00:f2:90
Fingerprint (sha256): 25:1e:5d:3b:f0:82:77:ce:f6:0d:7d:10:bf:e4:66:20:3d:2d:46:13:53:6a:69:42:3c:1f:00:ef:37:27:5c:b3
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate hackzurich.davidkeller.me
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for hackzurich.davidkeller.me
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
hackzurich.davidkeller.me
www.hackzurich.davidkeller.me
www.hackzurich.davidkeller.me
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Certificate
The complete raw certificate details for hackzurich.davidkeller.me in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIEKzCCAxOgAwIBAgISBFas9MaUrGO9GPQJ9wtzaTRlMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzEyMDIxNjI5MzdaFw0yNDAzMDExNjI5MzZaMCQxIjAgBgNVBAMT GWhhY2t6dXJpY2guZGF2aWRrZWxsZXIubWUwggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQDDwMEkAV1i03YHSGLfrN5jiPD8XGtY+kEYZdzk+GErzu1zOtvr Zm6di7rJW+0d9fkBECwOBmS36pn8Y0HSR5XLmfsBBty2FRjWKgLjVpPQ+xzPKoCN BPISBNXb3RipmYgeXtovMJDbc8vnqjEfgCyUw1oxXdEDbAtn96mv6KO79IRmsawY QzmD3JgAc0ttHQi1agVD/nt+Py4vYvqWj3aczL2LK82sbV8qMOd3HKSpq7MLEmPG WArIFMbGtAMHUGCapIYrMMjKRnVmooF5qxG9g6X1lFe+jnaFkGKn4JOYJEA/Y9iF 6OqIRqESvcZjgz8+yKqCHbLjD3RGPxp3D2pHAgMBAAGjggFHMIIBQzAOBgNVHQ8B Af8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB /wQCMAAwHQYDVR0OBBYEFPFm+GHngg5gW07GB5IFMLRqadTwMB8GA1UdIwQYMBaA FBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcw AYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMu aS5sZW5jci5vcmcvMEMGA1UdEQQ8MDqCGWhhY2t6dXJpY2guZGF2aWRrZWxsZXIu bWWCHXd3dy5oYWNrenVyaWNoLmRhdmlka2VsbGVyLm1lMBMGA1UdIAQMMAowCAYG Z4EMAQIBMBMGCisGAQQB1nkCBAMBAf8EAgUAMA0GCSqGSIb3DQEBCwUAA4IBAQBV xDlGCawagKP4fQDSz9dkxvUwHsRJcCNVDW4kB0cFw+J4W5WxRb4I5sAkb/yQTzxp t8i8FF7E8nfCRE8n6M5VAQ9QJJxKWpU3qSBdRsw6mlXxHtbJQJRdCXZvYT4j1MQw ftY0SaO4d50zzQgIb95yw1HuN+DSfuD4GsJyJpxA0zE8QrutldBxR+4kgijQnHao j2WSBcPM5YXNAixx1zEs7fNUowJVcuIg80NyqP9IMPCI477W25qRMyeAf0uetRPx l1dyXxUXz1+tf0NptLAhy2i28zNV7sgJX/fciP0DAWvPrz2SXBNvifMBQ1tH8GU8 iMCVkHYy45sOFPH6r8CN -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw8DBJAFdYtN2B0hi36ze Y4jw/FxrWPpBGGXc5PhhK87tczrb62ZunYu6yVvtHfX5ARAsDgZkt+qZ/GNB0keV y5n7AQbcthUY1ioC41aT0PsczyqAjQTyEgTV290YqZmIHl7aLzCQ23PL56oxH4As lMNaMV3RA2wLZ/epr+iju/SEZrGsGEM5g9yYAHNLbR0ItWoFQ/57fj8uL2L6lo92 nMy9iyvNrG1fKjDndxykqauzCxJjxlgKyBTGxrQDB1BgmqSGKzDIykZ1ZqKBeasR vYOl9ZRXvo52hZBip+CTmCRAP2PYhejqiEahEr3GY4M/Psiqgh2y4w90Rj8adw9q RwIDAQAB -----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 377943325445646404045901481588225053635685 . . . . . . . . [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 2023-12-02 16:29:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-01 16:29:36 +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 'hackzurich.davidkeller.me' . . . . . . . . [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 24711520233051852410927788828962917419806449992522018558104295423687799105463174161986968542876328821262054707943397314064037757003048793702539585929678810854795060458744660722743349654296139204365103976906319735448018254134034597207245311925403207218403060483567803791910816645343545819766869954606687460918439404122074083215340536712147459228843936952303263211555770021666124490845852873747936928219178688887719031456210513199293794245223632468200699389299106018314367227688810725141099379639331015144880163082177188844889309764775142672501210457053433323997506802845438490769556920263411598063960601151379656895047 . . . . . . . . . . . . . . . . . . . . [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) f166f861e7820e605b4ec607920530b46a69d4f0 . . . . . . . . . . . . . . . . [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 (60 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hackzurich.davidkeller.me' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.hackzurich.davidkeller.me' . . . . . . . . . . . . . . . . [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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