security.tue.nl

Issued by R3

About this certificate

This digital certificate with serial number 03:af:80:3e:a9:37:a8:54:44:3d:34:9b:30:4b:79:3f:ea:71 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:af:80:3e:a9:37:a8:54:44:3d:34:9b:30:4b:79:3f:ea:71
Serial Number (int): 321056738544447536746092547718016776792689
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 24:29:51:b0:cc:2b:0b:ce:e3:fa:6c:c9:2f:3b:6a:81:c5:8e:9c:2a
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f3:c8:1b:1c:da:89:ec:c5:e0:b2:13:57:40:65:fd:2d:8a:88:07:48
Fingerprint (sha256): 08:7b:b7:23:49:11:d6:1a:9b:4a:7f:17:96:81:07:fb:40:2b:cf:7a:08:4e:95:42:6b:15:f8:88:ee:e1:04:8e

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtAzlmcVopOcAW70s9/FY
TaqjHuZs6BuPh0EFhE6geeheJ7kd+1E1r3bV/DoyFqL/S8VlD54mKDoY27BpSjFh
JNV6hlXTItfp2Nytop/hwyWBQxe5/Hhjy5Apk3rD9tsPWePgoJjOt41GCH0wJXlG
IQmuAkmepPcsvdKc0KEaIWSVJvgjqLsfSYOf/sfG59OqIjwqZMc0DOFTnkKQRno3
tjsYd3YGMot/DTZUyHwLRino+o0qnBNq6d+bhUySbeQFgaiJFd8LvpmhEnXjUrGE
VfSon5v4FAyoOjkR8alr/KZRwk8RArAzRwMklnJvp7vf1ojemqOUm1RGV89LbyZA
vwIDAQAB
-----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 321056738544447536746092547718016776792689
 . . . . . . . . [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 2024-01-20 07:29:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-19 07:29:32 +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 22729254581269432282094421753958046849431281525998052017258466518518937645309694554002148971513702539972034665820688283444325790261077377060581388688596351243088006356087306806085320567989934554308962854596446219824392420932020081539694475966681879550790708039661696799656733534316851106045156532150088266880202964731622410268091414710490097814731187926017780032791660466255827151259200574075391152316515472743498190804974717533524515206032442627166214735441628457199642959670010449606629194010339137679364735929665242462654815406595507196288691714035486373283146093227579029942789526534832858293882577105065337045183
 . . . . . . . . . . . . . . . . . . . . [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)
							242951b0cc2b0bcee3fa6cc92f3b6a81c58e9c2a
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d25fd4bbb00000403004730450221008015b72ed7b53639ada797f9c6c3aaca2bc83eb7339f777a98b6eb0babd63a1f02205943f3061698b4638db2b5ed9b39beb459bd2a5bba4e643891324459e60ef1a2007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d25fd4bc10000040300483046022100b09dba7bc5f145030ca8a6fff3b30eb2cf04597226aa55f1375bec3b172139320221009820eeb827035cd10af3b13e89943a93529a23a1e174338c4604edc39432a0e1
 . . . . [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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