kt-formation.fr

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:88:9c:6f:dc:55:5f:a4:d3:b8:99:a2:a8:6c:b9:60:60:a6 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)

Certificate Subject

CN=kt-formation.fr

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:88:9c:6f:dc:55:5f:a4:d3:b8:99:a2:a8:6c:b9:60:60:a6
Serial Number (int): 307823200077716222169602411840451412779174
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 29:bf:25:49:2e:59:02:2d:a4:83:fa:d5:be:1f:17:f8:3a:99:0c:60
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 8c:fe:77:24:bb:52:0d:61:5b:6f:bb:c8:6b:e3:32:22:e6:22:36:7f
Fingerprint (sha256): bf:9e:92:8f:f5:c5:33:ee:ec:44:f1:4b:08:7c:e1:10:5c:29:82:fc:a4:f1:11:1b:e2:65:b2:3a:1b:dc:6e:2b

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

Other certificates including the domain name kt-formation.fr

(limited to 100 certificates)

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-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsxUcpdQK2MUpDP85N/yF
VO9oKwsEkLwXCLLdcyeEJEPLPOk+s9HiQzSiEg3/Yo2OXFNhgYGehunqCvJcG2M/
zV/wRWECDe06TQOsuFvWj+0dqqvV7RETSayoEXD4Pp4PiDfcH5VKcC+hVcpVqqAh
JVRNe2N39GFkZFbcuCSRJ0OLXSlduPFX9T87dbZwdlkoqkt7WfCHurCxiXpVWPVa
EImu5dvZQhRZJqNLK8X3wm46SAyIXBPnrSeKTMf+7DEJhcB0pqN+0zrODL3L1CUz
PIcWgGJq8iRXOPBA1vh4QdPY6Xu+YgmInQFvBxKOFcNoaPD0YRQWTD2N22psfzy1
Kd+yYTxYKrq7+dkMJA6I7jjaOeCj3SwpAHA5zpsJVrOjodgcZ9zmcI4056aD1R/b
hLUgUpOXRh9NfYUAQByQ1uWCmLQzSfOthJTMVMzG1+l4FuHW48hgm/yubfM5CsMu
JS2ci70vYXoXjQTewulIj4lEtz3JV67x7HuBLZ8laTHIj4f5fHEduwUwhGjf9Nl2
Oe9xvaOD0IQMnWCG4LXJ6XbRhho7JlWUaxdDEYG1sry4OZyV5/qOJHrhMiJxwBJ3
l6bmBzyUnc9AuEulVK85oVeAJef3bYz9WOvHEVpJKDpU9LaNYX6ofw7lYdoZdT2q
nYC32GagtaorpU0oAOWFnY0CAwEAAQ==
-----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 307823200077716222169602411840451412779174
 . . . . . . . . [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 2016-10-05 07:33:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-01-03 07:33:00 +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 730592729813807682878643879084920627120622988987150581968119203791401606874924346638896964651408293667709555055236975499724514877582403684351054467191947353379250773314860183669445906398719853117460425160938594584145692234538503499546629237829395191459021736545837637110254807439544242223022734683945957335738830554604541502536512986270035700579824753665218584200256391698277403177457882576431318533816641815894231627046971614397330629357365875847486594634245033293879578863747875406611256918713981804868767167906191422121803857416408803246666940787619910917719717932353837077299841807267606605783018106272112449214326469344981799439366315705387067570872190004810749207215933893451951687308082878158933722288351692335982491832922888232072973769181465934920142796218958494708205095523425798449026350240830789451766734308981956165506518429000718397288422078908973430078067450920955206238530636393151298001981276987563050983413317825066166924608829915158529349938889810938887800206883026897716263324089055799401541566737441536648336729163619921183067885366209091091060842869098321513082275167948271775419158783259157157546342605032360744523339670027282662815806161902632225916496224235244238805170289275378099681762810355304129228021133
 . . . . . . . . . . . . . . . . . . . . [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)
							29bf25492e59022da483fad5be1f17f83a990c60
 . . . . . . . . . . . . . . . . [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)
		006caf4000f1a38ed54095d13ba9063504fb384669b6d6430a692d473137d9fcffc68841ce0946e7233a5b6ebd9a5f377c0e09474c720a2def3d9404f4fe43c5ca76f82bf262f7aa8eea1c10780fb08c3f6e86aa55f592a39a1cb29f2c9a2fe71f1fc4be6a9d37bfb85161f9fc04272c3395b8c7aef229c891731d8c3867e17276f07dc3ee0ab926725dc651af75789374d19a4379e80d1937bca93215da904750223e81428e3cf385d00a529b5cded3ff593813e60eb11b29cc2c9fd138a32af855ca14158dfe24daa80fa0f1d498208f3d258caebc0c33b47a684d75a81ecf5649c47427ec13e4ad26f6ddca3b27319003c81a7b84367d85c8d9c8d37e048af1