strategie-leitfaden.ch

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:61:3c:1a:5c:ab:fb:27:23:82:60:d8:23:3b:5f:06:66:2d was issued on by Let's Encrypt.

With 8 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=strategie-leitfaden.ch

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:61:3c:1a:5c:ab:fb:27:23:82:60:d8:23:3b:5f:06:66:2d
Serial Number (int): 294424137945684615132864490955812089783853
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4c:6e:4b:77:b9:7d:9e:c5:a2:ad:cc:c6:c4:b5:74:89:4a:92:1f:bb
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 16:83:3a:0f:c1:17:ea:c9:c6:02:c9:f8:22:02:da:f1:a9:02:58:4e
Fingerprint (sha256): 2d:aa:20:0f:e7:97:de:e0:5f:35:ac:5f:30:8e:45:c4:1f:ac:46:f0:31:af:d7:8e:2c:41:56:75:4e:9d:0e:db

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 strategie-leitfaden.ch

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for strategie-leitfaden.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

strategie-leitfaden.ch
strategieleitfaden.ch
strategieleitfaden.com
strategieleitfaden.furger-partner.ch
www.strategie-leitfaden.ch
www.strategieleitfaden.ch
www.strategieleitfaden.com
www.strategieleitfaden.furger-partner.ch

Other certificates including the domain name strategie-leitfaden.ch

(limited to 100 certificates)

Certificate

The complete raw certificate details for strategie-leitfaden.ch in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxdyUva5UkX5rCYWWS4yS
0E2c84hkNj1MdwkQlhf7yuUJ9nJTaUQE6XnRAKmk9KnHtgIenmlIyYLVkTjSFTcU
F2iJOVahQ19HXo4bIR5qv2kVNcf/wliGIPAhufUogBsOF0AKqN/8FV/C37UXXhHX
bRQqDJ1vgos+cw7DlmZjTXb9lPqA6D59a4OR554x2eMUSucZ0gUA7gYnh/cjLjjD
PHsyBoaptqD/CLwN9by3AAVNkJoXrc24xd6b03uRXtPt8ErHKDe/ncW1andb47fj
7VJ3CJphPB0oaHX4eQhAbBq5rFN0WTvEhtthxCU7eeaOQIHSjDolxATZf6AfgDjS
QwIDAQAB
-----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 294424137945684615132864490955812089783853
 . . . . . . . . [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 2019-06-30 23:15:16 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-28 23:15:16 +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 'strategie-leitfaden.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 24977718632940009000342621564175804912748764814993763496703741016103666441182180787760952591181621580275606900609365396418033333223624395640502053379822810912783342300186310181364711338736505111471577688304751984359967537935089220940467043291484642899783291976896462302562689003219831650846436625374435117732117025169576652962165498029935218395041286877036255562971746253744168072343448528918688401388297210448503609552786782021809220493374411469383130823924843046297525493942223340819263426777942004369548069071105272394312543115444493975306090309056038091076993172725997700708341129889065126409355548729554218046019
 . . . . . . . . . . . . . . . . . . . . [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)
							4c6e4b77b97d9ec5a2adccc6c4b574894a921fbb
 . . . . . . . . . . . . . . . . [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 (237 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'strategie-leitfaden.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'strategieleitfaden.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'strategieleitfaden.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'strategieleitfaden.furger-partner.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.strategie-leitfaden.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.strategieleitfaden.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.strategieleitfaden.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.strategieleitfaden.furger-partner.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 (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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016baae2c43900000403004830460221009d05945465b25809328e9665f36d450aa2cd86e7db04d1902292ae16c563f4e6022100e86f596795f2cbcce562c9a8d19769e191efb14510a65751ae41f09509999db600750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016baae2c45b00000403004630440220651d2308d64bc52e07935004351b2f2184bf4138b260c901e8920be25ef61c330220199469d47eb228c78e9fb4d71e557922da326f2f49a8ab0b58d93b97e900917b
 . . . . [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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