security.tue.nl

Issued by R3

About this certificate

This digital certificate with serial number 03:20:80:d6:4e:15:a4:81:32:2c:05:6e:62:2e:02:67:37:eb was issued on by Let's Encrypt.

With 3 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=security.tue.nl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:20:80:d6:4e:15:a4:81:32:2c:05:6e:62:2e:02:67:37:eb
Serial Number (int): 272397147455481618683145526052022187931627
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: fe:95:a3:42:4a:6c:15:aa:03:58:c8:b5:be:d5:8d:3b:ae:d6:79:0b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): cd:a4:dd:be:64:3e:2e:21:d8:ad:45:54:ab:04:9d:b2:7b:16:a2:f8
Fingerprint (sha256): 08:30:e9:49:8d:27:cb:a2:ff:e8:49:86:2c:e3:e5:2f:e3:b8:ff:56:60:09:81:fe:46:87:fc:90:61:a7:ec:ef

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate security.tue.nl

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for security.tue.nl

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

safety.tue.nl
security.tue.nl
veiligheid.tue.nl

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Certificate

The complete raw certificate details for security.tue.nl in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuWAmTlJKhie6r5Faj0/d
Hrs+IVwNn2g/3eLkASZR9A2wnnQf+xzJWIwx1PfQfJp5sCuekHYPsy1igz5sAG9o
O+UoNapYmiWhvpXveJaVyCfkBO7hIS64EuBCsBdYpyYCy/TVm6LXbwNTFvmdnc9w
ReLNtkyYydBDfgrZcbiHFsVcFiekRNPsnBvj1ReqMNiN7Ys4qOIBVhu+7MChYdKZ
jubHtNtT2Rq6VFpgJyw73V0iEBIlzVxmNV7N4vA6NgDaDB6cPJvtDM5og6Cdw7ZO
jI8in5cu3Toi9ujN+HL6iyH27hxPZo/ydlbwpareX14WzIZOhdvvYoKT6jAVSqDN
YwIDAQAB
-----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 272397147455481618683145526052022187931627
 . . . . . . . . [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 2023-11-21 07:29:37 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-19 07:29:36 +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 'security.tue.nl'
 . . . . . . . . [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 23401499569663545923710446031794144054513619108147376503644474486423100935190301449318758780308682957068475781876713533617433668271776828729968907508846107669981126955176560992433733768043607394089276565766334684480421556564845418829370508925512186774538566843889713353045075362462027802299826181791099764571423118889275343834567870432668214116660086524988064166218200393783467108129176492152707597497294566857075535190802509569210962837370227970926992345306430853297506482152512894287839109781053268748036992450604380190552390932193625811446700516883710732404135467913420733824534046772274387120621196785678486130019
 . . . . . . . . . . . . . . . . . . . . [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)
							fe95a3424a6c15aa0358c8b5bed58d3baed6790b
 . . . . . . . . . . . . . . . . [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 (53 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'safety.tue.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'security.tue.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'veiligheid.tue.nl'
 . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018bf0ffca65000004030046304402202d343559f640bc647f01bdf0f3cb62b350fe3bcbdd6d440d3e898c3c86bb62d6022071a1ad296b545ebc3ffc9d5a894edff4ad90db5ed58890585762cb330cc31f90007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018bf0ffca610000040300473045022037ef47da8f09a6097d7e24235a930757868034440c248c2844df3fa4fa48d626022100cc6ee5563e9d3d17c9637891a6972255e2375f565778cbf08c61959be65ce13c
 . . . . [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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