srk-zuerich.ch

Issued by R3

About this certificate

This digital certificate with serial number 04:db:b6:d4:ba:87:b1:3d:85:b7:66:81:0c:56:c8:c7:b3:2d 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:
  • 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=srk-zuerich.ch

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:db:b6:d4:ba:87:b1:3d:85:b7:66:81:0c:56:c8:c7:b3:2d
Serial Number (int): 423214006128172215598608019972324220973869
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: c8:3d:64:45:55:22:e4:dd:4c:4a:5f:16:73:c4:9c:d1:bf:cd:9d:af
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 8e:2c:a6:a1:d7:03:96:b1:0f:ba:01:90:ca:22:93:0f:a9:18:82:23
Fingerprint (sha256): 3d:9a:65:36:d4:73:7d:ec:8d:3e:91:46:ec:f2:45:81:d7:32:ad:f5:95:7c:1e:d6:42:c2:67:07:e0:88:5a:2a

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

Revocation information

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

Check the revocation status for certificate srk-zuerich.ch

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for srk-zuerich.ch

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

srk-zuerich.ch

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sd.srk-zuerich.ch

Certificate

The complete raw certificate details for srk-zuerich.ch in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlRqXV9j75IyZAJKR1CY0
j1SzsbJAmf6Wp9V6XmHUn5xYxB+vIltJ+Njn/RhhWQLDRawR6TJNaXkrSsOOGm/P
2u7gBK57oB6K9/IAHXGMinU1W9Q5ERj86xOpit7zjBHGA1c8o5w1c2KUjwOeHyeS
Hv0Gh146qq0QhmVCCdpu/WGLQQmCcgLTNI3Esnkny0rL+DjROGeJTztMpgYNj1tG
pMJXvM6zM5Zc52WCAARuTGce1mex4jPTK9u4GQARAsskldB0z0a4TBQVIExR8gJX
ntF7IUUYl5sulvnA/5MQSdvh0/IoNSx1tvFDXjuk4MWER0cVlICge7vqD00U8o38
yQIDAQAB
-----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 423214006128172215598608019972324220973869
 . . . . . . . . [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 2023-11-28 00:50:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-26 00:50:33 +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 'srk-zuerich.ch'
 . . . . . . . . [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 18822620041584075137201979669816527851334206719799445430486608949694337537736599534440436897230160755443640447163255697895227282389684200952904329834575971762716082356888902161380490014731710116574666793502579696937495507875587029919823672353880505430175396733055070086152603839671033660650046377831864731537401448534319894758575868451888965668061163998043451323056129758971871987738320623258370302587636319569690971837584151917735901024698344177965654861556338573653864755935465357999936951070572500176526751624888013571834760722580488472009385174667425694019993792441119451182347331479381957603385029629566016945353
 . . . . . . . . . . . . . . . . . . . . [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)
							c83d64455522e4dd4c4a5f1673c49cd1bfcd9daf
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'srk-zuerich.ch'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c139ef89f000004030046304402205378653971edb7f484389b99823b229bfb78617435314ce44924a9e2ea98a33c02204bd511ec61c48521da47090bda9b23ce0d8e478a4258ce12a8aa40a380f82a50007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c139ef8ad0000040300463044022051f5f5ea23d2f977bc33aea982fd20adcb829467ddde77961e393a174e2cd54002207ac7e17287e9a570f7cfcf6df1910807504ee6e1563e3b6ba12773a93224a5cd
 . . . . [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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