digikat.ub.rub.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:ac:2f:a5:9d:6d:34:98:aa:d3:f0:85:27:d6:59:c5:6f:82 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=digikat.ub.rub.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:ac:2f:a5:9d:6d:34:98:aa:d3:f0:85:27:d6:59:c5:6f:82Serial Number (int): 319928758543456160219471574564147592261506
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 13:2b:3b:69:54:0a:65:16:be:02:18:52:15:92:19:91:8b:98:27:d1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 31:62:6f:9b:20:a9:e1:5f:f7:dd:fb:c7:fe:9b:d3:49:96:ec:0e:a9
Fingerprint (sha256): 02:ae:ea:12:fb:2f:fa:5b:e8:80:19:9b:b2:a0:9b:21:ba:74:17:0d:21:44:9b:bc:9a:b7:e1:5a:00:79:71:e9
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate digikat.ub.rub.de
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for digikat.ub.rub.de
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
digikat.ub.rub.de
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Certificate
The complete raw certificate details for digikat.ub.rub.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFWzCCBEOgAwIBAgISA6wvpZ1tNJiq0/CFJ9ZZxW+CMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA0MTUxNzQ4NDVaFw0x OTA3MTQxNzQ4NDVaMBwxGjAYBgNVBAMTEWRpZ2lrYXQudWIucnViLmRlMIIBIjAN BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAksctlNUrKJGriIlFZh7Wsih4pIeh dU7KChPwBZE7CbRwTzCI0GDbkEz3Z7Nbk9+13p3Kh3FTwBWmrS9ysVGQ2mjlqXQt SGvr2nTK0euQx6Iqa8/IepaMa1XngAd9kaxo4PrZr8xF/ac17CEf5LXK0fwkCq0f s9d9GXKeh+7lg4s21J4+wgALCX7l19oJ9iinLnKf6/halYYnjpAElHLtH/1qzD6f JIljNeFcytlS9e3vWZvmwTDQqafmfrfPQUo+FtQrUAFlzTL8aIaykN3FD7paPngi fHDswxP1oNn2ZkWxoxpGV65L8tLDtc7PJLp22ZUNveJOFqgOb1UeRQrA5wIDAQAB o4ICZzCCAmMwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggr BgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQTKztpVAplFr4CGFIVkhmR i5gn0TAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcB AQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlw dC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlw dC5vcmcvMBwGA1UdEQQVMBOCEWRpZ2lrYXQudWIucnViLmRlMEwGA1UdIARFMEMw CAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9j cHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcA4mlL ribo6UAJ6IYbtjuD1D7n/nSI+6SPKJMBnd3x2/4AAAFqIlSDnAAABAMASDBGAiEA vLPWiawoweSKP1C0xF2KIWXWRJrUfzlXtoH1814y6soCIQCqer6VOXEyV7MkStbH Vhg9HZMPckpMpqmYNqqcx/+D5QB2AGPy283oO8wszwtyhCdXazOkjWF3j711pjix x2hUS9iNAAABaiJUhgwAAAQDAEcwRQIhAMQuGGgKg1+quWuXdzbDf6701PDjKPG6 h8xwrOi+8HRbAiBMm16H2iMFMgLzGtuhEHiAbfeGfCDwFcGmJz4cKx5pIzANBgkq hkiG9w0BAQsFAAOCAQEAJBzN8wvU0D5Kbb4DD/5LGyQLdsiXqsQaGgm4t1PNmpVa lY3wfAwOSUehTh3DZizPctdDZpSh46mDAu7pw6B7n8P3Dgwm/cXHtsyOaqMbKSY6 ljc1Ivh6TscXlSaUISXujXFEkKHTaBqwPJlKnGvEG1PL8ok99n/zk8t3Sl36w+yG pz/PUUwgTuDBc9ghn1gRGwBDFRzl6yl8AcKPp4ffhlQpOGTt8VieFV8vpO/cQrEf nNXvgS/5XhpiPEq1GhtgaiKJSWv0jc2g/5OlfkFFE2mejCWDmuMl54WPovFu1+c1 Mg/ucYLt5reCEu/CjsMAo9Qm0GWsojEi6c2jvNdU/A== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAksctlNUrKJGriIlFZh7W sih4pIehdU7KChPwBZE7CbRwTzCI0GDbkEz3Z7Nbk9+13p3Kh3FTwBWmrS9ysVGQ 2mjlqXQtSGvr2nTK0euQx6Iqa8/IepaMa1XngAd9kaxo4PrZr8xF/ac17CEf5LXK 0fwkCq0fs9d9GXKeh+7lg4s21J4+wgALCX7l19oJ9iinLnKf6/halYYnjpAElHLt H/1qzD6fJIljNeFcytlS9e3vWZvmwTDQqafmfrfPQUo+FtQrUAFlzTL8aIaykN3F D7paPngifHDswxP1oNn2ZkWxoxpGV65L8tLDtc7PJLp22ZUNveJOFqgOb1UeRQrA 5wIDAQAB -----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 319928758543456160219471574564147592261506 . . . . . . . . [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 2019-04-15 17:48:45 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-14 17:48:45 +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 'digikat.ub.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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 18529010883260639537134478374893134612650129061813256738788311632764391983947083166179363225054365871551301855033311974689902603259313507816316175203264737776336954360643030544112436870541939550278452353065031072877773650378791515657179994287389019116528779322528328501541931821677322050312037667605888047983173144641584587370589607745085071646112659030002337802650664322349013043193910293874958327751076271773538370404531063010719782989623436472568228088125984635900896119308860237708120749395489548293101192186501500690509214013391392423722776124780370130583788200738059673974083900086663886512017713079750773883111 . . . . . . . . . . . . . . . . . . . . [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) 132b3b69540a6516be021852159219918b9827d1 . . . . . . . . . . . . . . . . [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 (21 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'digikat.ub.rub.de' . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016a2254839c0000040300483046022100bcb3d689ac28c1e48a3f50b4c45d8a2165d6449ad47f3957b681f5f35e32eaca022100aa7abe9539713257b3244ad6c756183d1d930f724a4ca6a99836aa9cc7ff83e500760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016a2254860c0000040300473045022100c42e18680a835faab96b977736c37faef4d4f0e328f1ba87cc70ace8bef0745b02204c9b5e87da23053202f31adba11078806df7867c20f015c1a6273e1c2b1e6923 . . . . [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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