kt-formation.fr

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:5e:d4:9b:b9:f0:80:56:f3:80:16:28:0e:9c:cb:c8:fe:f2 was issued on by Let's Encrypt.

With 2 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)

kt-formation.fr

Let's Encrypt

Organization: Let's Encrypt
Country: US

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 03:5e:d4:9b:b9:f0:80:56:f3:80:16:28:0e:9c:cb:c8:fe:f2
Serial Number (int): 293606005198268685446524864530385602150130
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 56:57:90:99:e9:df:6d:d2:92:78:c5:43:21:44:20:b3:b7:06:31:af
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 72:bc:07:c1:ab:9c:d2:ff:bc:24:06:0f:df:6d:2c:4d:2a:30:93:4a
Fingerprint (sha256): 00:00:1a:01:c7:ac:4a:cb:66:90:22:c4:c4:a3:8a:76:44:3b:b0:18:b2:72:11:02:18:d0:db:fd:e5:a8:a1:71

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 kt-formation.fr

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kt-formation.fr


Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

kt-formation.fr
www.kt-formation.fr

Certificate

The complete raw certificate details for kt-formation.fr in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 293606005198268685446524864530385602150130
 . . . . . . . . [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 2016-05-03 20:14:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-08-01 20:14:00 +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 'kt-formation.fr'
 . . . . . . . . [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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 782557351954956174589285800957085807462801113246098003684578989521267300562763371899855913343225281583724120887079028534943618278143465323610936321780230014536991499672692063811032056212893611403967639863195398501774476306092546855319553286039009436721510370962183862728018685850139860428471187727544458307537311642567789945898753338303582370479946616697670630102050243823307119730476427035108097786104074811945059301645530079900180941288993283215821302751730646847483766487497129260138309505648060469954907099571236349607992013617839153660393637364300199216554246965841171365830391623699845591906760367008969135987850240712868951452213226956689585056536592916290321828836128103034540357742790324975326422946767683534864545378061335748036567459393506268579280315260446894265588088433966343822761959889508450979551605776971867788172873366821924393440392450629630249039398678907281454262537708862942135182046107636594971290487223781212897541646984131627259824334419554999298546732222129015209857904823466084576760636424546013456402444298254245649574699052978924133397251471841275819499669908919758998935923920283352386356697837443165688765279562065481391617518433619377943171986915460031054753002664753945133214498693650969383686621741
 . . . . . . . . . . . . . . . . . . . . [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)
							56579099e9df6dd29278c543214420b3b70631af
 . . . . . . . . . . . . . . . . [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 (100 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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kt-formation.fr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kt-formation.fr'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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