learn.ciachef.edu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:16:8e:4b:e4:36:af:b2:f1:e6:9c:8e:be:73:15:cf:c1:a1 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): 03:16:8e:4b:e4:36:af:b2:f1:e6:9c:8e:be:73:15:cf:c1:a1
Serial Number (int): 269012214293929320918300532613981787898273
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 54:54:fe:4e:ad:f1:77:76:0e:79:9f:e5:1f:d0:de:28:e8:e8:fe:4d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): fa:ea:4d:b6:f3:54:7d:7a:91:f5:1e:d4:ae:20:c6:d0:77:c3:17:4b
Fingerprint (sha256): 31:07:f5:5b:26:0f:56:18:6f:7d:2f:2c:01:b9:0d:eb:f2:f7:57:ca:9f:6d:e2:56:6e:b7:7f:71:32:6a:12:01

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 269012214293929320918300532613981787898273
 . . . . . . . . [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 2020-01-31 07:12:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-30 07:12:08 +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 1007356412256951795661742864033408164527194569226285910329410578637476553446619241103196349303448143430395413016743908126262736634556505370303208695403451447928308049730320343997638835581839699482629924131341912370718868197598619023006777318864935916459876760716270715127879202175998200044570166762836838102174928546361140494148024771325470859157627486533194352082476594174079816324531056180030192120023471764296394542214337646513383768112101014330273583181435797916547620495750372439238395048046760101325191416392534600964297574190935148309138020744439496977277672562218435835901672458717756934624185125811931439439828640214884673873654270084298369588886124600731803942249838850989742152359296188908446297320685797163265010899500381217144040310320110900797164397767281136029074627901835922323115901101180691784576009731894418644451315871759721446525119437445935689231493736614906143463128947232205350328663927033525213047302990650430022424484882999238010066928771918063682449849712143207107221712439206105641187154343664598684095932536143556590802326701825139745653963416614946647663297905628460826575192663284991701278951549317301651760271595750267780000561727616536513413318996487391486682385841902179591381576610361668256839363463
 . . . . . . . . . . . . . . . . . . . . [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)
							5454fe4eadf177760e799fe51fd0de28e8e8fe4d
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ffaa8435500000403004730450221009b0cd16866a77d64b45fec70dad2c4208616bcfbafbcafd6667c16d4a1f5364d02200ae2306e6c902de4feefcd5be0c26e3e2435f9533c627a2b12ec65cfd1756dd5007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ffaa845100000040300473045022100a395911f353ae52a1ab3ea1e46f9c3f5ae8ec6b50f759317926e635216ca85e102203c5004d83667419a36d5cfa7094eb67f20deb2d23c24270b65e5d6be1b1dfe03
 . . . . [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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