learn.ciachef.edu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:dd:4c:09:e4:bf:49:af:07:46:b1:ec:ab:07:86:25:aa:a9 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=learn.ciachef.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:dd:4c:09:e4:bf:49:af:07:46:b1:ec:ab:07:86:25:aa:a9
Serial Number (int): 336640333582704293459968227027064906427049
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 40:8a:76:19:3f:b5:a9:1b:6e:6e:2e:14:01:f7:3b:f3:aa:c6:c3:06
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 70:14:2e:5d:2d:c9:e0:8a:43:9f:d8:2b:65:e8:ee:ed:ab:9c:b3:a7
Fingerprint (sha256): 46:75:d7:ae:43:f8:2f:1f:af:e2:65:d0:fe:b3:c2:e1:47:ae:b1:1d:cd:7f:f9:eb:92:40:39:63:c5:b8:04:75

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 learn.ciachef.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for learn.ciachef.edu

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

learn.ciachef.edu

Other certificates including the domain name ciachef.edu

(limited to 100 certificates)

Certificate

The complete raw certificate details for learn.ciachef.edu 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 336640333582704293459968227027064906427049
 . . . . . . . . [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 2019-05-14 11:09:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-12 11:09:48 +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 'learn.ciachef.edu'
 . . . . . . . . [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 861780904207479037383442997261164070217422228130310370807922631594235131101525012982025370868332717717778115675059019130577129233212808625167552720613232771166896090618413005480338547779506027296916663928492435808744762969218546484170629979645518560996632590603914174447803614596829962207642304862700781153252553007256036624682273839220115098818774203816002704194706870376105131111430635239125983611666823253113385362620856041481196377232311923976257980964010461103155542637019403644594723145256590245370619036211858990206372885058880315045573904087461721291937384827434195125072176818787517992460128175550577504799583852346118343104129412991359158008181455482884483870028331133516771877036291614619706827520161315687091937395883225387790256820267786892000327655189660964855452296322462189773909041661216177792538954309665586245172879003029740337772997787743221099112408330172941700815354842620906416194085112245154638738556529511307564178805062974480308964025628443942656976245718220182803154964709999007248570560883197175781170875845105284949058600687726171369747288108901003038608046400129412303951530462743939877764352043113930930629651720986156714411249123510493084843358073709963796045005964289573233159182260185693361924661573
 . . . . . . . . . . . . . . . . . . . . [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)
							408a76193fb5a91b6e6e2e1401f73bf3aac6c306
 . . . . . . . . . . . . . . . . [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 (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'learn.ciachef.edu'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016ab63fb23e0000040300473045022052267d7036773793b58112ddc53c29fef541777671b9a798a3b66f0d6eadaa850221008fdc8f249ae232b30bdd4d4bb27d84d9485debe6f6b3f60043be94bf1054cf0a00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016ab63fb03d0000040300463044022047a482993d77dc09ecad0aa5fa5caf7483e18b5ecbc489684f709eb29d4f9b6802202e2d04502606ee52c6b7a10623b11c7f092b6efbdd7c299138390adf25c19d15
 . . . . [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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