psychologue-amelie-marchand-rennes.fr

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:94:43:fd:8d:9a:39:c5:6b:28:db:a5:f3:93:65:30:d2:0b 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=psychologue-amelie-marchand-rennes.fr

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:94:43:fd:8d:9a:39:c5:6b:28:db:a5:f3:93:65:30:d2:0b
Serial Number (int): 311789022898441201659401142967222953628171
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 8f:41:8b:70:26:e8:1b:a0:ca:10:96:91:15:eb:6c:7c:da:17:bd:64
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ea:4c:55:c9:3d:a7:8d:64:da:50:a4:b3:60:f9:94:c1:9d:4e:36:95
Fingerprint (sha256): f0:03:0c:95:b4:3c:e1:ec:aa:1f:56:7e:a6:8a:27:ef:68:6e:1f:04:95:41:a5:6a:62:c6:8f:3b:80:b4:86:eb

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 psychologue-amelie-marchand-rennes.fr

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for psychologue-amelie-marchand-rennes.fr

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

psychologue-amelie-marchand-rennes.fr
www.psychologue-amelie-marchand-rennes.fr

Other certificates including the domain name psychologue-amelie-marchand-rennes.fr

(limited to 100 certificates)

Certificate

The complete raw certificate details for psychologue-amelie-marchand-rennes.fr in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAymeLSdZJ3uXV9COXag7p
p1kZ/L5etRqNZPfi/FP30vGGtdkPRZjomLgUV22iTOl8CAWY47FIYXPGzfuaykzv
KDoiGVVWPHk7pOEOv542vQ35sb8lEFD9f40qAaINUDhCo8b4Rz0CkN6+VJN9Bn8I
BZ6rvkCfUZHNzxMmu9qhhhIllYvPL8LSEljpC+8W+KxAM8wmggvaoQlZVVKzaVrb
EmNDfurZ5mJab0AplmA+1bszPdFF/u5X1HvrpruG2aTG8FpxndV8ghR9HKH2n9bq
p4DUUvYsppg8fm2wweNDppj8tG4ISog2N9fejXobbRhaApZJo5YJBw9EeBYnaZuy
NwIDAQAB
-----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 311789022898441201659401142967222953628171
 . . . . . . . . [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 2018-11-07 14:07:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-05 14:07:51 +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 'psychologue-amelie-marchand-rennes.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 25551197099606075325531168584352530760218219925016736791806329708555198901481147348282579294754279529518202730169324263128204641884947146562284486013177930497210480257036474404553909465423565969350783439673662544349408440782078612588803133585823534448893322207338316740772075359692576406473227748894182270952463987887709988083489165025630493140739389619809926318776495708142886954787293361188388234565848712388915566549351363594466274092858780691835857749971828955432766059630756211597005926613091289030644718830252896112435704902104152655543099899467794230260423275868062590125065222351605911156579437598232758956599
 . . . . . . . . . . . . . . . . . . . . [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)
							8f418b7026e81ba0ca10969115eb6c7cda17bd64
 . . . . . . . . . . . . . . . . [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 (84 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'psychologue-amelie-marchand-rennes.fr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.psychologue-amelie-marchand-rennes.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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000166eeb722bc0000040300473045022100e4dff47721a52dd3b1eaa36dfde2f3fa95d6bf4f09f8f2fcfab1f480e299159402204e87db9170d3d1683c33d1268d59875736c36db50357c8f9bec00ea8cee6dd640076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000166eeb7254e00000403004730450220182d6a256a4ec3d9b4c6de0b391ce74497fc47fa67e8ea43d26c44ae36ce52c2022100d61482cb11c98b7dcdc5afa0d2e91ab9a4e613327af480e2ca82b71da3d15123
 . . . . [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)
		006e45cc8eb2642288af763f1b33b25c37bf7659b3b0e156f158b02e3922ba51586a32f7779bf9faa956021d04018420db461dca5c47bc995e93a0e814f550cb09ce4170ca89af4f2cdb5ba7f4c83a923fd2103aa98abedc58e9e8ab0995ec9fa7365b8ef9a1d4a98eb6c5fb410851366aa9d908dad70ce5d2f9aaf4998fd623082ea1629ec7f3986f53088c129c086d23379032612854f9d473247e1081f299541eec3284597350bee5ea3995b3029bd1ced6b982c34786574c41142fe29a1f8c7e2dea4dce209ea290ca1ac4832d09f855434672eb6b6e56622c4725957001d949f6b681d34ea8dcbe5778991f30dddf2f0f997c1982b0452765007470dfd1fd