sz.speak-up.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:08:54:00:5a:45:a6:01:c5:ef:52:b5:29:ac:ea:11:2f:17 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=sz.speak-up.edu.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:08:54:00:5a:45:a6:01:c5:ef:52:b5:29:ac:ea:11:2f:17Serial Number (int): 351283059644989411424938183682334202605335
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: df:54:77:59:29:15:c0:7a:d5:00:d4:ad:26:29:a2:92:bc:01:43:39
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 63:14:e2:3d:ab:8d:12:ff:3e:7e:1e:c4:0f:83:ad:be:f7:59:6e:53
Fingerprint (sha256): 14:70:65:d6:5e:3a:12:0b:4b:f4:a6:b5:b6:cc:a3:8a:52:1c:7c:fa:7a:27:8d:e6:23:cc:51:f4:71:cc:7c:3b
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate sz.speak-up.edu.vn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for sz.speak-up.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
sz.speak-up.edu.vn
Other certificates including the domain name speak-up.edu.vn
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Certificate
The complete raw certificate details for sz.speak-up.edu.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGEDCCBPigAwIBAgISBAhUAFpFpgHF71K1KazqES8XMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA1MTAwNDQzMzRaFw0x ODA4MDgwNDQzMzRaMB0xGzAZBgNVBAMTEnN6LnNwZWFrLXVwLmVkdS52bjCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMy2MJD9cL1TJMm9rAMDXwr/+iZ2 enqsEv1UrSlqdF/4P2M+Ki41i2Cccd6W2enxxxA5C3tuPGdcW98mBMg0imx0twqm jlE8xvH14Voox8qaRF/W11nS00w5bIVL5rbeNo2f9/QtwmoBgLKGmT64jDtOS9eB SP+xmxr7EZyAWl735Pp44jEBGnlpa0LmPGb2TJ/LuA1geTxE5ztp88x9MVNiIog/ xSj9dbc/luDYieS02JBI3jNrrcLnJ0PCoxuuzN5dk6LTifD/LrS27bfvdQjX2vsz raVwHpnWYBqABleuAzPqm6BkSjLJ7tLfuWRHWLM9ts9h7XSW54RZyXVg9XUCAwEA AaOCAxswggMXMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYI KwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU31R3WSkVwHrVANStJimi krwBQzkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUH AQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5 cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5 cHQub3JnLzAdBgNVHREEFjAUghJzei5zcGVhay11cC5lZHUudm4wgf4GA1UdIASB 9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHWMCYGCCsGAQUFBwIBFhpo dHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYBBQUHAgIwgZ4MgZtUaGlz IENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1cG9uIGJ5IFJlbHlpbmcg UGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdpdGggdGhlIENlcnRpZmlj YXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNlbmNyeXB0Lm9yZy9yZXBv c2l0b3J5LzCCAQUGCisGAQQB1nkCBAIEgfYEgfMA8QB2ACk8UZZUyDlluqpQ/FgH 1Ldvv1h6KXLcpMMM9OVFR/R4AAABY0iTd/4AAAQDAEcwRQIhAIiHgHh9wvpRtS0X XPyM7mdW4tldZTN/OHwQJ9baRV86AiBDDJngVLXxB5UXY3vULPYamqt1d+zcS5Jr jdXCFCNWmQB3ANt0r+7LKeyx/so+cW0s5bmquzb3hHGDx12dTze2H79kAAABY0iT eKgAAAQDAEgwRgIhAIo0pekEqDzrwWbof6MmD83FgnUc6prLfgBPmS/SzFFKAiEA u8/qwmhreguE/VDDQCX+A8UexaMMoF8ELAsVJBeyE2AwDQYJKoZIhvcNAQELBQAD ggEBAI2JRLhtHVqRfpMJGwkNtM/mFZJAgCYyuC64Zl084rTNCHrlXTsw1a0rXzo5 GyxdPzo3D30xFw5/elXw/p2uTCnwk3wSQyQcOOe2bdB11CM563sFhxkO/3sXdSIO P75ByCsvGD/9TyN5ZGmotkTGO0X7usMAIfX0kiFlUue2NiJKSWiSwQht3uSRMzmK D0VmvqukBX+fcaK089quG4kpAT4WVgWu46RVnFbuJvtu0r1MrjcWMId8f5IEPLgE 65B4a0SLq5qmkGldhrlZrPoUpTGa/UiI7bwIZmibdG4FQnqQK0Bu/dwphsHGFJKN U62nFWhKDpqoMNrPWpwfU9TXB2E= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzLYwkP1wvVMkyb2sAwNf Cv/6JnZ6eqwS/VStKWp0X/g/Yz4qLjWLYJxx3pbZ6fHHEDkLe248Z1xb3yYEyDSK bHS3CqaOUTzG8fXhWijHyppEX9bXWdLTTDlshUvmtt42jZ/39C3CagGAsoaZPriM O05L14FI/7GbGvsRnIBaXvfk+njiMQEaeWlrQuY8ZvZMn8u4DWB5PETnO2nzzH0x U2IiiD/FKP11tz+W4NiJ5LTYkEjeM2utwucnQ8KjG67M3l2TotOJ8P8utLbtt+91 CNfa+zOtpXAemdZgGoAGV64DM+qboGRKMsnu0t+5ZEdYsz22z2HtdJbnhFnJdWD1 dQIDAQAB -----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 351283059644989411424938183682334202605335 . . . . . . . . [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 2018-05-10 04:43:34 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-08-08 04:43:34 +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 'sz.speak-up.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 25842455308670005903036646418896696203471660667307193102772611041728086870248311004047308489673288899527158050161673040568843214214855149645058407007742917040450344593193669091857384723226010238831897072045200977222035337419134013912855485606277653324139646076676867775671984258786799384697967710261833889161845506285100669153215007564198110523474175468036472928241547431274452479141222578085355931491446885269214292619868996254544572300813791827191653223426827643599038245434096991799575917747623933951205321326886844111819601379843769990966972027963581555983100376235602739456795216806529733204204957912172857455989 . . . . . . . . . . . . . . . . . . . . [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) df5477592915c07ad500d4ad2629a292bc014339 . . . . . . . . . . . . . . . . [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 (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sz.speak-up.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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) 00f1007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000163489377fe0000040300473045022100888780787dc2fa51b52d175cfc8cee6756e2d95d65337f387c1027d6da455f3a0220430c99e054b5f1079517637bd42cf61a9aab7577ecdc4b926b8dd5c214235699007700db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf6400000163489378a800000403004830460221008a34a5e904a83cebc166e87fa3260fcdc582751cea9acb7e004f992fd2cc514a022100bbcfeac2686b7a0b84fd50c34025fe03c51ec5a30ca05f042c0b152417b21360 . . . . [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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