praktika.wiwi.rub.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:e6:1a:26:52:c6:33:28:e8:ee:0c:aa:15:e3:89:95:18:7c 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:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=praktika.wiwi.rub.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:e6:1a:26:52:c6:33:28:e8:ee:0c:aa:15:e3:89:95:18:7cSerial Number (int): 339636561101128215542368489831442802874492
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 83:32:d6:0f:cb:9e:c4:c9:71:7d:dd:b0:32:8e:90:ea:4d:50:16:69
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): d6:4c:ce:f7:c5:d0:b7:aa:b1:ce:e5:e8:07:a2:6e:57:1b:3d:12:0f
Fingerprint (sha256): 00:c4:35:54:54:ba:0c:3f:c7:8e:81:ef:af:4a:2a:0e:46:b9:68:81:a9:69:53:dc:38:16:ca:49:c5:49:34:d6
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.org/Check the revocation status for certificate praktika.wiwi.rub.de
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for praktika.wiwi.rub.de
Public Key Algorithm
RSA
Key Size
4096
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
praktika.wiwi.rub.de
praktika.wiwi.ruhr-uni-bochum.de
praktika.wiwi.ruhr-uni-bochum.de
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Certificate
The complete raw certificate details for praktika.wiwi.rub.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGQTCCBSmgAwIBAgISA+YaJlLGMyjo7gyqFeOJlRh8MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNzAxMTAwNTM2MDBaFw0x NzA0MTAwNTM2MDBaMB8xHTAbBgNVBAMTFHByYWt0aWthLndpd2kucnViLmRlMIIC IjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwG6izMR+RGdGJCz06ZKs5YMd BXAa6MoQnNCqeSoeKlX8YguALGvbbS/Vm/ZjaHELb+wVrw5KEhZADUwwEMAODFOq qNpXXkDhsTU/m7Q+Vt3nHPdI3xcHX9wPUHv/iMvyfbMzeds9t7ejuvng0/Elj3/1 MDvZsg70tMd1tu95lI1j3ngvKVb4CMkxvgk6++NlnCB3km+DS7az79Ny+BteYBn3 HHUusVoyqfGlOoKfQVy4PUMzMHH/j4J7c5QP2xoLoIqc80sOhNY1hpC+cVFTt9fV 4Jp1i18ITNSX/TqnF53lGMYyYi0eD+an15IonVdcMYAogymSEzryp+/v6VQD4gDB oW2ymwciKGc7U/f2JvmcLT6ZWTksbWTbRPOHPKgZpVUIEc/7tkxgx8fu9/H5KlCl DsVFyf05/ZgSOyBnjZ5HHzX9VHg3TEuJ89VExFyaGt6M80A7PQeHIa+TmKqF7hfy SQDjbUTaWVM/0GWTppVkkquI8SCzA5RSLQ0jgQaiFlgQitIR1dgPBMRxuZzI4ZEh +f8RQiuNuM/1nfYbyH7jsZ5eMLsMEhRnXINwIwScmoLp1+P2bRATuDW95dODVdLL 8qtYYsD8jIi/Sbaq5aCIfzKhf4Mhhz8koIx/tFRfeeM/SP7lD4ns4EbHRGig4y4m 3oO/mzI+Uxj5f/QXwvUCAwEAAaOCAkowggJGMA4GA1UdDwEB/wQEAwIFoDAdBgNV HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E FgQUgzLWD8uexMlxfd2wMo6Q6k1QFmkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3 pkVl7/Oo7KEwcAYIKwYBBQUHAQEEZDBiMC8GCCsGAQUFBzABhiNodHRwOi8vb2Nz cC5pbnQteDMubGV0c2VuY3J5cHQub3JnLzAvBggrBgEFBQcwAoYjaHR0cDovL2Nl cnQuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wQQYDVR0RBDowOIIUcHJha3Rpa2Eu d2l3aS5ydWIuZGWCIHByYWt0aWthLndpd2kucnVoci11bmktYm9jaHVtLmRlMBEG CCsGAQUFBwEYBAUwAwIBBTCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYB BAGC3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQu b3JnMIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkg YmUgcmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFj Y29yZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0 dHBzOi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUA A4IBAQAivcoCFuAuCZZEQeEhnPyQ1EMBrHQpAisrZh3ufOwR1qiyyN2kbn9j6XuR KMlN89AxSplJKmEWvLeHgq0OwFKkNM3X00Cg1PHh6/+jEW9vwVv/XQQzXpnIQ9Mz ia3hu24O2tEuDlXdkTOXRhQQc9PeRkrs96T0eTDSQ84WYbXvBs+YexUP9xWY2+cy +jUCdE9iCnjJoAAK+rPKJVDCxyCH5WzogZhgYMyFuaU79GY9szxISsPI3jSYDUK0 OxTuqocK5AoCj6l3jOt5knBxvwvV07gd36HusIdetUlGcScTyZLy1YQ55sRNWqOK yz0Uut5Y+C7R0RXIIaebYlprfSy+ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwG6izMR+RGdGJCz06ZKs 5YMdBXAa6MoQnNCqeSoeKlX8YguALGvbbS/Vm/ZjaHELb+wVrw5KEhZADUwwEMAO DFOqqNpXXkDhsTU/m7Q+Vt3nHPdI3xcHX9wPUHv/iMvyfbMzeds9t7ejuvng0/El j3/1MDvZsg70tMd1tu95lI1j3ngvKVb4CMkxvgk6++NlnCB3km+DS7az79Ny+Bte YBn3HHUusVoyqfGlOoKfQVy4PUMzMHH/j4J7c5QP2xoLoIqc80sOhNY1hpC+cVFT t9fV4Jp1i18ITNSX/TqnF53lGMYyYi0eD+an15IonVdcMYAogymSEzryp+/v6VQD 4gDBoW2ymwciKGc7U/f2JvmcLT6ZWTksbWTbRPOHPKgZpVUIEc/7tkxgx8fu9/H5 KlClDsVFyf05/ZgSOyBnjZ5HHzX9VHg3TEuJ89VExFyaGt6M80A7PQeHIa+TmKqF 7hfySQDjbUTaWVM/0GWTppVkkquI8SCzA5RSLQ0jgQaiFlgQitIR1dgPBMRxuZzI 4ZEh+f8RQiuNuM/1nfYbyH7jsZ5eMLsMEhRnXINwIwScmoLp1+P2bRATuDW95dOD VdLL8qtYYsD8jIi/Sbaq5aCIfzKhf4Mhhz8koIx/tFRfeeM/SP7lD4ns4EbHRGig 4y4m3oO/mzI+Uxj5f/QXwvUCAwEAAQ== -----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 339636561101128215542368489831442802874492 . . . . . . . . [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 2017-01-10 05:36:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-04-10 05:36:00 +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 'praktika.wiwi.rub.de' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 785054767482176094805618332578738218394680979164730213626341441591627886064422696101133713572131247694275603336759635790822304155731638657806562073873209991471669453338260976735545294990059899100155249108540487698647520086117772159842026100561726824314791766980154718665475182917487447979574649801377637346880346050999003909909000440226672273104998497687385197343609795881315373814345013894775197915245668636251707131556729265164194030251828668198088123851087342236347311977969085320926403854407334724333402428256136718774558912388341517637302979800021580721274537095348026935822737402833689455130735401404703811437210348660820714855603485637338277528169893990762635881872843486863253218465935896136621974131247153899817051754867425419783969795146788990428965547686488584978548364857317159821961443626922412614044634317103144350722225192620204739218980526250784523623037929263732098535296953628962677341572375982068815456954750073875524220373155478978269878955452930879064686446296643508348560397516207212461380249993811479975969799203451917361089889566293260994220155127954803851955233800206676844020185482328463521996358813762340225148493839673524233411073541108974048332773022059937124656447753709276008354985497678912230075646709 . . . . . . . . . . . . . . . . . . . . [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) 8332d60fcb9ec4c9717dddb0328e90ea4d501669 . . . . . . . . . . . . . . . . [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 (100 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 (58 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'praktika.wiwi.rub.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'praktika.wiwi.ruhr-uni-bochum.de' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.24 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (5 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 5 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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