hanu.edu.vn

Issued by R3

About this certificate

This digital certificate with serial number 03:0b:7b:3a:1e:79:35:c9:9f:e5:d3:0a:58:4d:a3:68:fd:e1 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=hanu.edu.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:0b:7b:3a:1e:79:35:c9:9f:e5:d3:0a:58:4d:a3:68:fd:e1
Serial Number (int): 265243760646185944938820595856227223272929
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 3d:c0:82:84:f2:15:68:73:13:af:1c:69:62:a4:9e:95:49:03:7e:d4
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 30:91:2f:4e:29:bb:01:f2:7e:5a:8c:2b:d8:a4:a3:9d:c0:f7:d7:16
Fingerprint (sha256): 55:f3:a6:b2:43:da:83:02:79:7e:98:5f:6c:d1:42:d9:09:7a:35:39:a9:08:8c:5d:2b:46:1c:00:11:4f:e4:5c

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate hanu.edu.vn

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for hanu.edu.vn

Public Key Algorithm

RSA

Key Size

2048

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

hanu.edu.vn

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Certificate

The complete raw certificate details for hanu.edu.vn in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu4P2bPvbIQrFn4izNHjg
2nQMd/Xd7yuglm/P6V9g9ee/haPpYWFQGgx6VFYw+xhGDp0b4zeebpMOVoFICGlU
WF0mfY6qKUH4nbGP52ceAr1+PMaCcT64H8rA/+2qlF9Bnc5WsxBrofbwjfAyjh4r
lcb7hDRJzX3Dkg4dpAC2XSdMfn59ZJxgFAdqhuDl1xjOpbToQwH1Qoo0QQnmL1iq
z0Y4JihpSRvMvCLbRkRfnOg02YQVMngoY2KtC+wqZI5ftutkpSP3JGf2RrniZQfm
4eKztbarPLI2SWgwPPZIV0+jX3vBYww6vqnRzfYPntKBUJmE1YU6F8WMCcZuJeBX
kwIDAQAB
-----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 265243760646185944938820595856227223272929
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-18 10:03:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-16 10:03:56 +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 'hanu.edu.vn'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 23671636212251050023058608258734610392277073232150994935068066800726912647049779488137577284807841874711500427965144471837612356776067174325118150634219007079957114534736354122271922401654177804365963962917134621141601523243019878695249203292866499762353430918014585324971260603247357941039138255573979142021605924426750463617989158882925445781114411983861640809430011065503280382789351670893081962623733457285422293037650168190368871148102268311608121108419709463104046641587494643046582551141696936210892177523139193171619798995224184321597766421462097172774186464751579607961918251237073803097009110910875329386387
 . . . . . . . . . . . . . . . . . . . . [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)
							3dc08284f215687313af1c6962a49e9549037ed4
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hanu.edu.vn'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b4274df91000004030047304502207b5e6ddd3cffc551e9923d8404adb9c5fbc28ec631c53fd99d8fbb7221b15196022100d76e4d17530670ff1f3995d51666052b1a9dc0785b0399c44607a7e51738fd26007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b4274dfb10000040300483046022100a29def70cd173e6d534c51b4af4cf9d58d3002d2daa590ef1c1d006a43148271022100d0505c54ac0dd320959c9adef7153db48310ec8eb873ca56ee955f5d76a68e94
 . . . . [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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