www.microduino.cn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:b6:7f:29:5d:c8:00:4a:d5:7a:c0:a4:17:2b:89:6c:5e:d2 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=www.microduino.cn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:b6:7f:29:5d:c8:00:4a:d5:7a:c0:a4:17:2b:89:6c:5e:d2Serial Number (int): 323437275316637240645094743609201205731026
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 4e:99:95:b7:c7:df:50:9e:83:da:e3:97:ce:87:7b:5b:19:9d:a0:91
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e5:4f:93:5c:0c:89:5d:13:65:74:59:dc:af:a8:fa:d5:bb:1f:c2:c4
Fingerprint (sha256): 0c:1e:fa:35:58:e7:1b:8e:52:3b:9a:38:a9:09:a8:62:4a:8a:04:8c:34:4b:5e:49:0e:5c:a8:0c:aa:89:03:bc
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.microduino.cn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.microduino.cn
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
www.microduino.cn
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Certificate
The complete raw certificate details for www.microduino.cn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGWjCCBUKgAwIBAgISA7Z/KV3IAErVesCkFyuJbF7SMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMDcxNTA3NDFaFw0y MDAzMDYxNTA3NDFaMBwxGjAYBgNVBAMTEXd3dy5taWNyb2R1aW5vLmNuMIICIjAN BgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA9oY+0paAzXt2uE0Kgc6R09M9yYN7 CG0Y6Oy/VBs933kHo/rCtXSEh0QjXqBKhOpgOZUixsCgbXFOZPxpnIWJgATjw6m5 KkJUye+6be9wH5jqJVdLtXJ7J9pukUwrSvg04tYzp6LxAAG+ERQFi+D9IlgVq1VN QZHggfBsgN7a5GzDbFO7OxMj21Rzt5SI3poMiCUSI6fSaK/sXSas8V6uY2uwn1kN A6CM4LX3w8psBby7HYdvWr4uA9a7n+Tue6rnDh34woea3A8UtN0SXD3bFmUiET5v EPiE0+lWMDL+NdNdA+KohceSDChvL9ru2ZDiVwWjlgg5Qm/8MzuAN2k1my37898u AJRRIay1G8xVbXfC8IYd5t4yXnicNtqmD50rM6oj1vN3ofGXJlQmi9zOjsks6A6A i+gCYroXOwFa1YX1xUpXmkxHj1hCm99LYZPRDc9/5hhI9qVrT+rk91MC8yXiJo75 dQeJgEhCu0Ogk4Qa/uvu0PcxIgVcuQUi2TrHu4EmYAVRbYwU/tuWCYQkdsBefbeN auuHC5ExH6qOsAXoj62i/4TOWNjoQoOTXGA8PG+zcqe3Fvyj5Wa6InlA8WBo94nA mut0qtYs90occylS1x2qbXBahCJhEGmIEpgeoc6DCHT8+d7jR//WIghoWWIRRTFy 0VdHlxOuVUhZCPUCAwEAAaOCAmYwggJiMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUE FjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU TpmVt8ffUJ6D2uOXzod7WxmdoJEwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl 7/Oo7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5p bnQteDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5p bnQteDMubGV0c2VuY3J5cHQub3JnLzAcBgNVHREEFTATghF3d3cubWljcm9kdWlu by5jbjBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkC BAIEgfUEgfIA8AB2AF6nc/nfVsDntTZIfdBJ4DJ6kZoMhKESEoQYdZaBcUVYAAAB buEd4DgAAAQDAEcwRQIhAIYw+6hihrretJxASaW8hiAbzGjGAQxNflOzvgXcTx/y AiA0XPAYuBKSWKXC08mjbTmqBlp7hDlPIiF/MD1vvOZGMQB2AAe3XBvlfWj/8bDG HSMVx7rmV3xXlLdq7rxhOhpp06IcAAABbuEd4GMAAAQDAEcwRQIhAIRiKDFbPIbe /kz9iNymryEMawV+Q7S16kAHe1omwFR/AiBxySIR0Lxr3S572EzCKmVr1/+kSzcj 5wMUfCudmWmfczANBgkqhkiG9w0BAQsFAAOCAQEACpg8LFzm7hv+YL/1UGe3Z4T6 mAtVa8XWCKbjcGjuovzYwcenPecq9CNjPLQn+tNmIQrWd1hOpGUvlcCIWmCaL3dZ SvcI/XYjz0GdmVDwMmClc+Td/jnGhcslkBVzlYCtd6tvtmd676FnNmkf0Qtz/vZb TrkL0bHe3vu6LR+rAFcQqsrLPVq9PcOEInJxb+H1mZNQfiF+ER6jzLsnMTVhne+Z S4M2CMF7E2HjA5a9JXaiy91mwPlwhhkKabTHOUtuSWIUqzG3zYMDLEngU51QvEAP P1UzP4jDgwfHYnk/OmYBHCVH2rZnv2B6jwyOKCwwNz0koENTd2RiopCb6mwk9w== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA9oY+0paAzXt2uE0Kgc6R 09M9yYN7CG0Y6Oy/VBs933kHo/rCtXSEh0QjXqBKhOpgOZUixsCgbXFOZPxpnIWJ gATjw6m5KkJUye+6be9wH5jqJVdLtXJ7J9pukUwrSvg04tYzp6LxAAG+ERQFi+D9 IlgVq1VNQZHggfBsgN7a5GzDbFO7OxMj21Rzt5SI3poMiCUSI6fSaK/sXSas8V6u Y2uwn1kNA6CM4LX3w8psBby7HYdvWr4uA9a7n+Tue6rnDh34woea3A8UtN0SXD3b FmUiET5vEPiE0+lWMDL+NdNdA+KohceSDChvL9ru2ZDiVwWjlgg5Qm/8MzuAN2k1 my37898uAJRRIay1G8xVbXfC8IYd5t4yXnicNtqmD50rM6oj1vN3ofGXJlQmi9zO jsks6A6Ai+gCYroXOwFa1YX1xUpXmkxHj1hCm99LYZPRDc9/5hhI9qVrT+rk91MC 8yXiJo75dQeJgEhCu0Ogk4Qa/uvu0PcxIgVcuQUi2TrHu4EmYAVRbYwU/tuWCYQk dsBefbeNauuHC5ExH6qOsAXoj62i/4TOWNjoQoOTXGA8PG+zcqe3Fvyj5Wa6InlA 8WBo94nAmut0qtYs90occylS1x2qbXBahCJhEGmIEpgeoc6DCHT8+d7jR//WIgho WWIRRTFy0VdHlxOuVUhZCPUCAwEAAQ== -----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 323437275316637240645094743609201205731026 . . . . . . . . [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 2019-12-07 15:07:41 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-06 15:07:41 +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 'www.microduino.cn' . . . . . . . . [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 1005731790159121416173625850136874440607468937203496503928592955097394056061018011693811169625110968407504526386275886808578497189280323997376533452820276718553543069707492840907333996228015151957077929093317135613576305259322437381858650038900892480864187202351907650329903406311001773929699349570875586852484273309410534811914648470403904572581348664135239150732638857218171390913584333333734544149212574144248729305464200773645915676699593315012587949399319774567998454512561125666251679892376324187160002575306883276527569971549200142499028686944273337955388085550628997144826791957444370297914553131564047681721101520848969043783531700388512218210838229778905978416223961230474431964187477263361385898492558356743665160096501931362378858288302993601805958892856594812478310949987562200309837042031564753478657854535546737747748838329110885658770378177706265350661922354013740704209937433890136307586327513604665878343084074054946978916273405259017308459287499703049078706026486636643369327358419347462574087760637711468904482065043989959881198233518721249519795166716160131157244361721956355058877866749472762824702712199824965474245734490299514529844627355262161982593152683248506508247777532664100018354974650412810847382997237 . . . . . . . . . . . . . . . . . . . . [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) 4e9995b7c7df509e83dae397ce877b5b199da091 . . . . . . . . . . . . . . . . [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 'www.microduino.cn' . . . . . . . . . . . . . . . . [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) 00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ee11de03800000403004730450221008630fba86286badeb49c4049a5bc86201bcc68c6010c4d7e53b3be05dc4f1ff20220345cf018b8129258a5c2d3c9a36d39aa065a7b84394f22217f303d6fbce6463100760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ee11de0630000040300473045022100846228315b3c86defe4cfd88dca6af210c6b057e43b4b5ea40077b5a26c0547f022071c92211d0bc6bdd2e7bd84cc22a656bd7ffa44b3723e703147c2b9d99699f73 . . . . [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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