ctf.onoc.eu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:8f:8c:4a:bd:89:88:9f:19:c9:1f:c4:ee:b3:8e:69:c2:fb 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=ctf.onoc.eu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:8f:8c:4a:bd:89:88:9f:19:c9:1f:c4:ee:b3:8e:69:c2:fb
Serial Number (int): 310183716258624315671515504494762131047163
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 83:b5:84:63:42:42:40:52:fd:cb:9f:71:94:65:0c:dd:26:67:b3:4e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 92:c6:f9:2b:f1:f8:f5:aa:e2:43:52:4f:ba:5e:2a:d6:c0:0e:21:0c
Fingerprint (sha256): 02:a0:34:a5:71:20:47:1f:54:b4:57:bf:c9:b7:59:dd:be:b2:45:e0:e6:43:40:fb:ec:18:8c:15:57:dd:82:a6

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 ctf.onoc.eu

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ctf.onoc.eu

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

ctf.onoc.eu
onoc.informatik.uni-bremen.de
pizza.onoc.eu

Other certificates including the domain name onoc.eu

(limited to 100 certificates)
pretix.460.kif.rocks
ctf.onoc.eu
onoc.eu
pizza.onoc.eu
pizza.onoc.eu
api.pizza.onoc.eu
pizza.onoc.eu
api.pizza.onoc.eu
api.pizza.onoc.eu
pretix.460.kif.rocks
onoc.eu
onoc.eu
pretix.460.kif.rocks
onoc.eu
api.pizza.onoc.eu
onoc.eu
onoc.eu
pizza.onoc.eu
onoc.eu
new.onoc.eu
pretix.460.kif.rocks
onoc.eu
pizza.onoc.eu
pretix.460.kif.rocks
onoc.eu
new.onoc.eu
onoc.eu
pizza.onoc.eu
api.pizza.onoc.eu
pretix.460.kif.rocks
pizza.onoc.eu
pretix.460.kif.rocks
pretix.460.kif.rocks
new.onoc.eu
api.pizza.onoc.eu
api.pizza.onoc.eu
onoc.eu
onoc.eu
ctf.onoc.eu
pretix.460.kif.rocks
onoc.eu
new.onoc.eu
new.onoc.eu
onoc.eu
api.pizza.onoc.eu
pizza.onoc.eu
pizza.onoc.eu
ctf.onoc.eu
api.pizza.onoc.eu
onoc.eu
api.pizza.onoc.eu
onoc.eu
new.onoc.eu
onoc.eu
onoc.eu

Certificate

The complete raw certificate details for ctf.onoc.eu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0NQKMblCLeukYr8ENGQN
Gzz+nk4TQQm729dtaVGCLOrzWSVs6q03NkB4F46aEYCVAcY6dfWYINzqhR9wFj8I
F1ZnqkgppWh1bBvlm9tyjsPxcBMwLw1Zt6544EnFadOznDX4P3G3Oal0q+rFOb4W
J/ouaGLBkdqQCzmFWibF0EiktNRCpap9bbRr9OANGwUlBr6FFbAKJ8hfbUg9DdOE
5IqN1bD4KepF1qjhG3oZ8HSyF8REk05fwjkh2PsnmyQm34aLxDz9uZWejbRDeZds
Tl5F4aeNBF3dwjuQP8OA0BIaTOXlnq/VTR3RjjhR20mleFQV5eT9Z4YInmMF+xbC
mQIDAQAB
-----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 310183716258624315671515504494762131047163
 . . . . . . . . [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 2019-07-07 22:04:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-05 22:04:08 +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 'ctf.onoc.eu'
 . . . . . . . . [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 26362128165817103707878620245946999143307186400869039087451139015591108087285602296901980940402361956924330655787348533923215900802568083022138304734259644998268821530856700103016543013450609724333777119860736848515834387971516350498556927735220045493976364867087377224218187446073822345190300789000511210963478185936036687417824496248340719521961432803921291749519616276698875476186501683380284640970737230225500873640007077636201429779814142706612685959179348739829766311314188556775522012469874002198029170825347818991869194018354506804097101769706449386008717516187063137660679594127131856660689411868017852596889
 . . . . . . . . . . . . . . . . . . . . [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)
							83b5846342424052fdcb9f7194650cdd2667b34e
 . . . . . . . . . . . . . . . . [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 (61 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ctf.onoc.eu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'onoc.informatik.uni-bremen.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pizza.onoc.eu'
 . . . . . . . . . . . . . . . . [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)
							00f1007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bceae28c800000403004830460221008a5c5d1bd2fe3e5082b2b0d826cb02b0614f84695032cbec59bc08ef4df5b54b022100a8f4467838ac496f620ada54a63f15efafd379164d2e9426280602fd2d40039e00760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016bceae28ed000004030047304502204fb19a2eba83a1b9c132c942782969529b17b17cbaedb4da305ca165560af64d02210095bdaa4ce17b90d6ba20fc5c76c26e6546278f0c6a4191326f70c9076d112ddd
 . . . . [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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