tocongdoan.wp.blu.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:2a:b8:02:ac:c6:01:b7:b3:9d:16:6b:90:d8:2b:f3:2d:6a 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=tocongdoan.wp.blu.edu.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:2a:b8:02:ac:c6:01:b7:b3:9d:16:6b:90:d8:2b:f3:2d:6aSerial Number (int): 275873309046040456568150806961861472497002
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 0b:38:18:fb:be:2c:2e:9e:82:ae:a0:ef:78:cd:9e:d3:54:52:84:c8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 0e:7a:29:a2:7d:88:ce:2d:ea:48:24:53:bf:e0:07:cd:a0:ca:53:3c
Fingerprint (sha256): 35:b7:05:d4:6c:d3:b6:a8:59:3c:05:2a:f3:0f:17:57:75:b3:9f:70:68:ff:b4:30:59:46:2d:39:5e:22:88:56
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate tocongdoan.wp.blu.edu.vn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for tocongdoan.wp.blu.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
tocongdoan.wp.blu.edu.vn
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Certificate
The complete raw certificate details for tocongdoan.wp.blu.edu.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFZzCCBE+gAwIBAgISAyq4AqzGAbeznRZrkNgr8y1qMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMDQxNjQ5MTdaFw0y MDA1MDQxNjQ5MTdaMCMxITAfBgNVBAMTGHRvY29uZ2RvYW4ud3AuYmx1LmVkdS52 bjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL1jLtunQIN2dzAgWAh2 O+Ngn2U5Fx34SX9Jywtvp5ICQS1ZdXRHg+Mk8RlMFY0OvPMCa7ElEc2ZB/Glbuu3 DrbCWNL6cczSpOgetRdJBPqys+zKGuHmzxOrzHco615VlqCJ9I7FxOZsLsg8vXlS afKkQ6Z8oJ3iGg4oVS0vVZOpi+o+gwzI3QWQS34fJ1Js6vFqN0L2gNQkayuaOZpV Q4Ni5tONOUDTDHUedRXLf0rXqVoUqgeK7HXdeQEWIpqyiA9F9+T6eWmEm6OKnRHH bt+GbDGjZ2kAlUPltRDkljAOtAZyRwY2XCwnclLcVJcOhsCfZZmwWD6fXLYD9QRd XbcCAwEAAaOCAmwwggJoMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEF BQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUCzgY+74sLp6C rqDveM2e01RShMgwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYI KwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0 c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0 c2VuY3J5cHQub3JnLzAjBgNVHREEHDAaghh0b2Nvbmdkb2FuLndwLmJsdS5lZHUu dm4wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQC BIH0BIHxAO8AdgBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAXAR UhkTAAAEAwBHMEUCIBReggr71kNoOl7LVHSurSWTPPDb3hvH62CbHukiavrwAiEA wAOTiCnBGTH3J3Ib8ZDj/76I+PgBR8DLCqKQXljhT6EAdQCyHgXMi6LNiiBOh2b5 K7mKJSBna9r6cOeySVMt74uQXgAAAXARUhrRAAAEAwBGMEQCIG/4Q+sUJmBrqKbd +52BScG2UoaLPuguGM/jra3RnyfRAiASsR9lIfdAwi4XdRh47coSKCBBbfu3f2tG Y1QGICd4xDANBgkqhkiG9w0BAQsFAAOCAQEAiUNdMnAUvgc8fAvr0sWQfYmIHggY +afGmBET+AJ4gLovJ7CsSIWFUD1MIkI7mRWUtPYNOQff7POOtKzYDguo24tlxa/o a4aBXc2xJh0E8pJmnHlyYdNepn/emNeX8A9Y3EeKMACzTldLWrbSuE+Z76r70qJQ Zks/WznaiRg8SaqbAIU8eXWCCs1BhUIH/FLQWcbAivahhLUFAcucfli/bYEeqPjy WgQpNnDLuVaubu4PCTje7IZ8O1RuI17qHtSGNWbr2K1KgeA9szejYuKmHFO/xl2D lmDrebUq/NbgUaeHxC9VdzFSG4a7mGN05dlSbEoICXCZ0Zj7c787ypGk/Q== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvWMu26dAg3Z3MCBYCHY7 42CfZTkXHfhJf0nLC2+nkgJBLVl1dEeD4yTxGUwVjQ688wJrsSURzZkH8aVu67cO tsJY0vpxzNKk6B61F0kE+rKz7Moa4ebPE6vMdyjrXlWWoIn0jsXE5mwuyDy9eVJp 8qRDpnygneIaDihVLS9Vk6mL6j6DDMjdBZBLfh8nUmzq8Wo3QvaA1CRrK5o5mlVD g2Lm0405QNMMdR51Fct/StepWhSqB4rsdd15ARYimrKID0X35Pp5aYSbo4qdEcdu 34ZsMaNnaQCVQ+W1EOSWMA60BnJHBjZcLCdyUtxUlw6GwJ9lmbBYPp9ctgP1BF1d twIDAQAB -----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 275873309046040456568150806961861472497002 . . . . . . . . [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 2020-02-04 16:49:17 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-04 16:49:17 +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 'tocongdoan.wp.blu.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 23907948618049515905495410449646187557323312820108933021136456131098757475052860881425457905368969829464424612025754095960582187943414121525296418926974040765056782115324224927999234530617110940922310667743175867563102421550594134622308299402963151413462219384604623889758791382319043144408548274460926808465011431924140001805201811308330448353595017744227319270018989497987502664811979466151971131811161200812531212116794633080740313506929071934366284985932946370339099170406060216515808724860322615567627829715213577332103345606350253845146997292930862532264067054768231461794844191139153973531713304960754257845687 . . . . . . . . . . . . . . . . . . . . [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) 0b3818fbbe2c2e9e82aea0ef78cd9ed3545284c8 . . . . . . . . . . . . . . . . [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 (28 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tocongdoan.wp.blu.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 (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) 00ef0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d913000001701152191300000403004730450220145e820afbd643683a5ecb5474aead25933cf0dbde1bc7eb609b1ee9226afaf0022100c003938829c11931f727721bf190e3ffbe88f8f80147c0cb0aa2905e58e14fa1007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017011521ad1000004030046304402206ff843eb1426606ba8a6ddfb9d8149c1b652868b3ee82e18cfe3adadd19f27d1022012b11f6521f740c22e17751878edca122820416dfbb77f6b46635406202778c4 . . . . [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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