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:c3:06Serial 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.orgCheck 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)
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SECURE.CIACHEF.EDU
*.ciachef.edu
learn.ciachef.edu
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learn.ciachef.edu
learn.ciachef.edu
blog.ciachef.edu
learn.ciachef.edu
learn.ciachef.edu
info.ciachef.edu
www.ciachef.edu
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learn.ciachef.edu
blog.ciachef.edu
info.ciachef.edu
www.ciachef.edu
*.ciachef.edu
blog.ciachef.edu
blog.ciachef.edu
*.ciachef.edu
info.ciachef.edu
blog.ciachef.edu
blog.ciachef.edu
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blog.ciachef.edu
blog.ciachef.edu
blog.ciachef.edu
*.ciachef.edu
blog.ciachef.edu
info.ciachef.edu
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blog.ciachef.edu
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Certificate
The complete raw certificate details for learn.ciachef.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGWTCCBUGgAwIBAgISA3Up78CuL7xPp/dRU9sKHsMGMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMTExMjA5MjhaFw0x OTA2MDkxMjA5MjhaMBwxGjAYBgNVBAMTEWxlYXJuLmNpYWNoZWYuZWR1MIICIjAN BgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyqM+IjXaRLRal9bcaUELz+9Qd2wg 1Ik/1rTdhyJM/QoCYzpdNzCBEyOEKLfD+Yt+yyFW6+jeRMbXqUyMMkzI8pl70Kv9 uFOoyyvhwl7huTa2CiC4s91+7OebOv+qlAXphqZ7y7pchg6xcgUigsXrLxvPYiZN O0VcKuaooopstE1vGsh84t1fQQoXhWzAVxNAgfB+SFb5qUiUti/INSmJ4xbqHT4u tgoqlfR8IqzibfDIPCmApxleYKS+slJGmTH11X9v5Mmrc5CysN/y6QgJpskN+Rjo BedL2lMPQSTG5i3vqQniEruUjHAvbxhbiiQxetBwMsLbL96qtG3NxLnENqrWBduZ stRv0isI96yOdwdLr5NP8oM+KFCqc32wV6BA/Pb5IyBUiZVLZCueP3BbLz/C3Z56 H/TYc5q2L+8O3KGWVCYJ/wwEs8fIcOeu/ERGhdk4iiIfeNYUnjq9k9RvxaHrAr5M DUtChdY9A6mV8aZ11Z2jDeIq1G29gEK6Rxi7Sw5if8u2f3QOIp1o5hMg0qsq6Q1r TegHivaTS+H0wqKJmkchegZRtfYeD9FIxsZ9wtqw+/fxyQ7YVIhnm0pHqqp/Nl4a QmBnDGGW+hQ8xQfTC9nJaXMC4hAudwmgNI80vqpVVDiAjkpbKY3kBRqP4foL9WWX qGf2bGMNwLTNvuUCAwEAAaOCAmUwggJhMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUE FjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU S67W+sTA4lLRXjb8w8p81e8B4oQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl 7/Oo7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5p bnQteDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5p bnQteDMubGV0c2VuY3J5cHQub3JnLzAcBgNVHREEFTATghFsZWFybi5jaWFjaGVm LmVkdTBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkC BAIEgfQEgfEA7wB2AOJpS64m6OlACeiGG7Y7g9Q+5/50iPukjyiTAZ3d8dv+AAAB aWzfUccAAAQDAEcwRQIhAINnchbJ04fUYJXD02qy/3RwdVhLpnF4f08GrOUcr2sS AiA2Oh9mx+AwcWSAZxeKpijbpvjPRR5cmPfBdcGAe6KSyQB1ACk8UZZUyDlluqpQ /FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABaWzfUhEAAAQDAEYwRAIgcgpjmFWNBI6P uWBViIdNNMoob9pB1uOuTeMu4TiklyICIDpnwFx1pwBestZDN+JHfSVLjFp46p/x ctIK3TdJ5fqbMA0GCSqGSIb3DQEBCwUAA4IBAQApN4SnVWrzMX0gL5swhDLfWgb2 JasXU7vcw0n5r3IStGT0qM91Tdv1KuioPrdlQD5zZjS/zjyKlm9jXhTG/KgwvfXI XiVHA4cQkGfQeDoGJmcWON/b9KxiAM3yaCGavNF/1UA5fzKU2xYUW+8XNjRoQDiI rBYq3Y7Y099jh23lPJtqeRDnUPb5NNJYzJsc/14PpkRTTzOnGD+1FCdcuJq8a6n8 bvBz3tyQSOCSDGXibjVtNyC/hzgkvMoRmfDmtrnfANhTXRXSXjHarL5fBWVYLpee K2PKADrMdAIjHQaGkxLQ5skCwy+6FycmK/fN9FAG7NFXeN2tyUOkttxs29ZR -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyqM+IjXaRLRal9bcaUEL z+9Qd2wg1Ik/1rTdhyJM/QoCYzpdNzCBEyOEKLfD+Yt+yyFW6+jeRMbXqUyMMkzI 8pl70Kv9uFOoyyvhwl7huTa2CiC4s91+7OebOv+qlAXphqZ7y7pchg6xcgUigsXr LxvPYiZNO0VcKuaooopstE1vGsh84t1fQQoXhWzAVxNAgfB+SFb5qUiUti/INSmJ 4xbqHT4utgoqlfR8IqzibfDIPCmApxleYKS+slJGmTH11X9v5Mmrc5CysN/y6QgJ pskN+RjoBedL2lMPQSTG5i3vqQniEruUjHAvbxhbiiQxetBwMsLbL96qtG3NxLnE NqrWBduZstRv0isI96yOdwdLr5NP8oM+KFCqc32wV6BA/Pb5IyBUiZVLZCueP3Bb Lz/C3Z56H/TYc5q2L+8O3KGWVCYJ/wwEs8fIcOeu/ERGhdk4iiIfeNYUnjq9k9Rv xaHrAr5MDUtChdY9A6mV8aZ11Z2jDeIq1G29gEK6Rxi7Sw5if8u2f3QOIp1o5hMg 0qsq6Q1rTegHivaTS+H0wqKJmkchegZRtfYeD9FIxsZ9wtqw+/fxyQ7YVIhnm0pH qqp/Nl4aQmBnDGGW+hQ8xQfTC9nJaXMC4hAudwmgNI80vqpVVDiAjkpbKY3kBRqP 4foL9WWXqGf2bGMNwLTNvuUCAwEAAQ== -----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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