learn.ciachef.edu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:15:30:31:31:f3:5e:65:bd:d8:db:70:56:2a:c1:ad:1d:89 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): 03:15:30:31:31:f3:5e:65:bd:d8:db:70:56:2a:c1:ad:1d:89
Serial Number (int): 268546845880083920499912392534849519164809
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 0c:ec:ce:d0:03:7e:a4:ea:04:6e:14:20:d9:75:13:f3:57:cd:73:03
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 60:62:38:ff:0e:da:5d:59:58:54:25:6d:dc:11:d3:b6:14:da:65:cd
Fingerprint (sha256): fb:9d:f1:8d:4f:79:2e:ec:b5:ba:cd:f7:da:67:06:90:2f:6c:26:06:76:b0:d4:e1:27:13:eb:81:c0:4a:d3:1b

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 268546845880083920499912392534849519164809
 . . . . . . . . [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 2019-09-27 09:10:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-26 09:10:28 +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 684471066478752762368228493032742374623809776938630026668780352477363966031109326681741761181038584577398741492899498535513085798051425897520637663489245047851346661628738802620040333188497775644911539366294654054017744092089999000599068826024161594519376418554138875879665689909996326011183263233531714073360771899748230417578182937334999633182835345925956081221420281854815778432419772391125670401211754761713693776520069901757577424122218819514188909570553336677479321891209079700860366817970011074799700911049091166744425950204920600834330606911979639453580346189549131475132605804933181310890925624382524566725714354102654419230067196897075562463020025252285071810678815407483980476031827694513868076211998709507114379831288007916756665489165714861310714308558230583382580549827996015683269815803129656423185797116358868442331450785493481374607003291684753872918943238297243640821026938124647170199444696929423508401958119152284993507351993086669599513792677212805645750027130564865862907234243305684867756523211450409346740352060729708867792016207693240596011678530379686750729398871839381712231002568905553111729557969937444573265134411411790146891452818044822558840242717751897447950672763841313451640592302967553280330389513
 . . . . . . . . . . . . . . . . . . . . [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)
							0cecced0037ea4ea046e1420d97513f357cd7303
 . . . . . . . . . . . . . . . . [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)
							00ef007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016d723352d80000040300463044022026ca2a02eda78327538fc3a6c103698cf1a1fce6ad32d5a3d25ff3e6f0c3f6d3022027cbb6aa48dc28db44f3a499fecc5fd788e3d10badd06867548c43cbff49f7f700760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016d723350e10000040300473045022100d15bafc4696ec9d233a25ed623493ac0fdfee5285a78a971d71a042b517489300220419214bc6ae9a799e96af50c5fcb82b29154ee41693fc812aea855cb34ef5ced
 . . . . [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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