learn.ciachef.edu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:75:29:ef:c0:ae:2f:bc:4f:a7:f7:51:53:db:0a:1e:c3:06 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): 03:75:29:ef:c0:ae:2f:bc:4f:a7:f7:51:53:db:0a:1e:c3:06
Serial Number (int): 301205637939830029167962588887285030109958
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4b:ae:d6:fa:c4:c0:e2:52:d1:5e:36:fc:c3:ca:7c:d5:ef:01:e2:84
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 78:d8:78:17:74:ad:cb:8e:ce:df:f2:83:09:ae:22:8d:75:09:f1:a9
Fingerprint (sha256): 2b:14:8d:a9:5f:2b:a9:89:d6:f4:58:f9:aa:5a:c5:54:7f:8c:0c:8e:bb:26:59:a9:50:de:42:23:5f:f7:77:1e

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 301205637939830029167962588887285030109958
 . . . . . . . . [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 2019-03-11 12:09:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-09 12:09:28 +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 826689555456841726774660976045903826820116612040664099951056122479352976503913359095122776553389067071258267144946730870339641680633052700866873032756222725896253376655188990848333431559093305540598638859974240633929905628181243103268403165438183678442900288192356481718139634844823077327950781790874146163014609637852838799136611588011673207208574671252099059504999992348099180898539505622259020754737621199669377270704738269776843156164767459434193682682287863955507475455980410264521382207881128822726144093557508536567624250946358457175834020093437121773040134560919409052069797120380145713998152612254286425463349431187125507426585474802172518319628470566134082475708183044555495834667004066929087552591195513742681127732024884797048520880654281822869183950237718022140376125412652190055939398216702321558149647033043730640054655688376200519815130469232530460845012995558232306836948243714786203836268982446390591911398306516416180424712145500054798937577556237079265300388162354948222053226215120707567508054575251242499779232519997739031220723255106872488956970789534183976348090198875156049338499248360883005492813804659614015343301016364754160180970399494519788666073415541239191138499497115567436847036545080979724945964773
 . . . . . . . . . . . . . . . . . . . . [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)
							4baed6fac4c0e252d15e36fcc3ca7cd5ef01e284
 . . . . . . . . . . . . . . . . [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)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001696cdf51c7000004030047304502210083677216c9d387d46095c3d36ab2ff747075584ba671787f4f06ace51caf6b120220363a1f66c7e03071648067178aa628dba6f8cf451e5c98f7c175c1807ba292c9007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001696cdf521100000403004630440220720a6398558d048e8fb9605588874d34ca286fda41d6e3ae4de32ee138a4972202203a67c05c75a7005eb2d64337e2477d254b8c5a78ea9ff172d20add3749e5fa9b
 . . . . [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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