isefs.uni-due.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4a:a3:c9:7c:42:62:bf:15:50:9f:3c:ee:e5:ca:af:5b:0c 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=isefs.uni-due.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:4a:a3:c9:7c:42:62:bf:15:50:9f:3c:ee:e5:ca:af:5b:0cSerial Number (int): 286735463282690103138997601674457823271692
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 3f:fc:6d:e3:1e:75:7b:80:ce:75:75:9d:37:51:83:48:1b:48:e6:04
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 71:7d:72:88:a8:47:93:56:4e:b8:72:dd:79:8c:3e:29:07:b7:c9:a1
Fingerprint (sha256): 06:32:2b:16:3f:a7:0f:de:d8:85:ae:a0:fb:12:7d:68:01:10:d8:56:59:96:c9:1a:2b:1a:1f:84:29:bd:a4:f4
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate isefs.uni-due.de
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for isefs.uni-due.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
isefs.uni-due.de
www.isefs.uni-due.de
www.isefs.uni-due.de
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Certificate
The complete raw certificate details for isefs.uni-due.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGITCCBQmgAwIBAgISA0qjyXxCYr8VUJ887uXKr1sMMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA2MjAxMTExMThaFw0x ODA5MTgxMTExMThaMBsxGTAXBgNVBAMTEGlzZWZzLnVuaS1kdWUuZGUwggEiMA0G CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC2JxPdz3x7yfXYkGKaolW02sZAsloj cdXFP2kIJvYcHBVM5msOnqB/I//vJRnm9c9rGMdsNMUruQA+v4bYX47SHs78ywoT Cp1v1bdGnyg3irzGSC1N9NN5dDcorElZs4r1ynMsvXIdqk6wV4uUScwSGFdNpF4K bp9PW7eJiytJGAXl7Rwwwdk8uj4Mqv/+fUgstvkSONzFRd4yWMx8/wsvP3bOYpfP AnkwCSeD92UZ8FJXL8QQUHGxFB6HyMGTpTBVWBznbij6ArEqMm6sDqdV6fZ/JPU0 xN8nQBIUeFZpBPHoAvEr0HR5U7IKHcIdbX1C6zTmraAdSFTJZuYGHjbBAgMBAAGj ggMuMIIDKjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsG AQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFD/8beMedXuAznV1nTdRg0gb SOYEMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEB BGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZy8wMQYDVR0RBCowKIIQaXNlZnMudW5pLWR1ZS5kZYIUd3d3LmlzZWZzLnVu aS1kdWUuZGUwgf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEB MIHWMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYI KwYBBQUHAgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGll ZCB1cG9uIGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNl IHdpdGggdGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xl dHNlbmNyeXB0Lm9yZy9yZXBvc2l0b3J5LzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA 8AB1ANt0r+7LKeyx/so+cW0s5bmquzb3hHGDx12dTze2H79kAAABZB0bLwEAAAQD AEYwRAIgPHqnwi8Ualv680rNJpi4ZoQCnElAFH+9HImOFNcd06kCIFXz+BUpTBVH w6VT+aydnNcYo12xAnms6wiqzPZevSK8AHcAKTxRllTIOWW6qlD8WAfUt2+/WHop ctykwwz05UVH9HgAAAFkHRsvFAAABAMASDBGAiEAhRYgsqetfqDKNirvyZAFNCDZ 6175LLY4eGofMrhK5lQCIQDxTG9Boqcdrgu3/o2ltyoX66T5Ojz/e+5dkIo1MYcD 5DANBgkqhkiG9w0BAQsFAAOCAQEAUH54DOQHNB2pXckYZGTNyz5MV0EjlVf4v+jp 0iv/E1qoW/xFV82Mlq3HPZUFP582cdrQJjLL/hvCFRexHO0We2wFXMVhZDjGa4eb 9qfDdHFh1Jab5tvHU8GK9zbqFcrdNm6hn/f2aCthq5tN7JNm0XwGeYM3Cp4WK8SM XJXG4p8uArxvSvpqz0gVyXtX+ER4pKQGJSg8TSU1/b2rcQPOXVwkL43Vc8K0UXeI 5CpD/gbCl1XtDBuprMM9FP4t0dPXWGVQ6fA8/VZ2ix5gUg4TbCPktCwMQtdIisNp /vY9StwmmG6LG3HBqlmoL7mgXNKRPbvNa/VuUv501bS4Kp9EyA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAticT3c98e8n12JBimqJV tNrGQLJaI3HVxT9pCCb2HBwVTOZrDp6gfyP/7yUZ5vXPaxjHbDTFK7kAPr+G2F+O 0h7O/MsKEwqdb9W3Rp8oN4q8xkgtTfTTeXQ3KKxJWbOK9cpzLL1yHapOsFeLlEnM EhhXTaReCm6fT1u3iYsrSRgF5e0cMMHZPLo+DKr//n1ILLb5EjjcxUXeMljMfP8L Lz92zmKXzwJ5MAkng/dlGfBSVy/EEFBxsRQeh8jBk6UwVVgc524o+gKxKjJurA6n Ven2fyT1NMTfJ0ASFHhWaQTx6ALxK9B0eVOyCh3CHW19Qus05q2gHUhUyWbmBh42 wQIDAQAB -----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 286735463282690103138997601674457823271692 . . . . . . . . [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 2018-06-20 11:11:18 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-09-18 11:11:18 +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 'isefs.uni-due.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 22994641388213024098482305622221588241883059587235745299754366513177897916545750864219019682437606343578119952222179831667905449494876849057214675296458089547793381960423040387469682979274608213749667740977253028759067919109870345089043770466711138299473828215008107849930807433238799294329011240371499646228799134154234846137567581964301629895863687657218891539981274478440831501474573885828945783887504075987954513668116506076596835644265698347794996378324058031582645216386497378156388215594671307817242860151452771881786617150173730778555056935255505525151405058352914273385952839486189847105876829287208196126401 . . . . . . . . . . . . . . . . . . . . [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) 3ffc6de31e757b80ce75759d375183481b48e604 . . . . . . . . . . . . . . . . [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 (42 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'isefs.uni-due.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.isefs.uni-due.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 (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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007500db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf64000001641d1b2f01000004030046304402203c7aa7c22f146a5bfaf34acd2698b86684029c4940147fbd1c898e14d71dd3a9022055f3f815294c1547c3a553f9ac9d9cd718a35db10279aceb08aaccf65ebd22bc007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001641d1b2f140000040300483046022100851620b2a7ad7ea0ca362aefc990053420d9eb5ef92cb638786a1f32b84ae654022100f14c6f41a2a71dae0bb7fe8da5b72a17eba4f93a3cff7bee5d908a35318703e4 . . . . [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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