bksit.ssu.ac.kr
Issued by Sectigo RSA Domain Validation Secure Server CA
About this certificate
This digital certificate with serial number 4b:8c:67:ef:4a:1a:ee:16:0e:60:26:28:d8:73:ab:2f was issued on by Sectigo Limited.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=bksit.ssu.ac.kr,OU=Domain Control Validated+OU=EssentialSSL
Sectigo Limited
Organization:
Sectigo Limited
State / Province:
Greater Manchester
Locality: Salford
Country: GB
Locality: Salford
Country: GB
This certificate has expire since
Certificate Details
Serial Number (hex): 4b:8c:67:ef:4a:1a:ee:16:0e:60:26:28:d8:73:ab:2fSerial Number (int): 100421129290718030495186828343517621039
Serial Number lenght: 127 bits, 16 octets
SubjectKeyId: 96:78:37:42:a9:ee:3d:53:37:cc:bc:03:df:07:74:78:c6:97:e1:4a
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1
Fingerprint (sha1): 8e:d2:a1:db:cb:5a:af:53:2a:be:da:99:4d:7a:07:11:2c:4f:e3:9c
Fingerprint (sha256): a7:5f:c3:31:2a:6e:51:c6:f8:84:75:e3:9b:69:08:20:43:7b:cf:e4:fc:60:06:e9:0a:e7:e8:23:b2:2f:7d:95
Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt
Revocation information
OCSP Server: http://ocsp.sectigo.comCheck the revocation status for certificate bksit.ssu.ac.kr
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for bksit.ssu.ac.kr
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
bksit.ssu.ac.kr
www.bksit.ssu.ac.kr
www.bksit.ssu.ac.kr
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Certificate
The complete raw certificate details for bksit.ssu.ac.kr in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF+zCCBOOgAwIBAgIQS4xn70oa7hYOYCYo2HOrLzANBgkqhkiG9w0BAQsFADCB jzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G A1UEBxMHU2FsZm9yZDEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD Ey5TZWN0aWdvIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB MB4XDTE5MTAwMTAwMDAwMFoXDTIwMTAzMDIzNTk1OVowVDEhMB8GA1UECxMYRG9t YWluIENvbnRyb2wgVmFsaWRhdGVkMRUwEwYDVQQLEwxFc3NlbnRpYWxTU0wxGDAW BgNVBAMTD2Jrc2l0LnNzdS5hYy5rcjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC AQoCggEBALmEnfm1YgI/MGtIl3KZZl1txsot1+t5WF1Ge9oFw5tjBWPmZOB1h0MK dYDduPGakBNgB2PKBneGiPxaTIU84qOTCLUTSglijSYs/DxIZfHHE2iLkW8EuUpi NKbtdb0WE9FKwgTyXXYJ1rjG/6ZOBMRPbTLsTd3VI+e/ap9VeN0O34bgFTlweRGy PqVRAtHlu1sor3j9wgN+ABrEbBe6BNHHQh49lMYfGOMlLG+W/Bs+TErYh1oRPbTY QRS3hICRQVJ4N5dqT+hwsT7NQyoQofXs/ChBPzej/Leo7JiarMUxM2hPv310Lknx lcCjePlcaLJ45dnRPbEyahoRUMjW63ECAwEAAaOCAoswggKHMB8GA1UdIwQYMBaA FI2MXsRUrYrhd+mb+ZsF4bgBjWHhMB0GA1UdDgQWBBSWeDdCqe49UzfMvAPfB3R4 xpfhSjAOBgNVHQ8BAf8EBAMCBaAwDAYDVR0TAQH/BAIwADAdBgNVHSUEFjAUBggr BgEFBQcDAQYIKwYBBQUHAwIwSQYDVR0gBEIwQDA0BgsrBgEEAbIxAQICBzAlMCMG CCsGAQUFBwIBFhdodHRwczovL3NlY3RpZ28uY29tL0NQUzAIBgZngQwBAgEwgYQG CCsGAQUFBwEBBHgwdjBPBggrBgEFBQcwAoZDaHR0cDovL2NydC5zZWN0aWdvLmNv bS9TZWN0aWdvUlNBRG9tYWluVmFsaWRhdGlvblNlY3VyZVNlcnZlckNBLmNydDAj BggrBgEFBQcwAYYXaHR0cDovL29jc3Auc2VjdGlnby5jb20wLwYDVR0RBCgwJoIP YmtzaXQuc3N1LmFjLmtyghN3d3cuYmtzaXQuc3N1LmFjLmtyMIIBAwYKKwYBBAHW eQIEAgSB9ASB8QDvAHUAsh4FzIuizYogTodm+Su5iiUgZ2va+nDnsklTLe+LkF4A AAFthRbs7wAABAMARjBEAiBFAQlc45basH/MIa21Zacaaj3iE5IuLKlGyuTWmqrs nwIgMO65ErD77Tc3IeBRZ8wg5QLCX98XAMEJ2mtH/pxwGJEAdgBep3P531bA57U2 SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW2FFu0PAAAEAwBHMEUCIQC/6yj3mNfc lQWaJrP7YhjLx/UQwEfxpMNIgo0kamgcFwIgRHw2+7h1lH6XqBcBca8CFqAuP1wd egaBWeAKq+NGrNcwDQYJKoZIhvcNAQELBQADggEBAIdCiCujRjh5sa+YL9Rdi0F0 2v96r/ebGfRkDGhQ/zHaRcsR8lXUqURkdIrfxxqlus+sFhOt5Wn0mZ9XuDcYwUUr bxCzQbovsZ9Mih5RFw0zHFRdmoy4bpEefkYQ7i9hrsqqwU5mkkpv7INyw8IwfisM 6NFHs8vtgEZZk2Tmys4XT0PqwDuq6olePlnLQjgvhY74VwMmPlOOiVZ/Hd2yhFlF 4JbOO/OO1s175hAIZzSNnCZVkK/g+ZtN12P9GnYFxPu2SEbTUms23kxcAXoD0X9S kljl8nelcyUn6ul10vc3rxfLHGQNLyQ2jTbcLwuCe59nylZdY04Cmx8rVUvLGD4= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuYSd+bViAj8wa0iXcplm XW3Gyi3X63lYXUZ72gXDm2MFY+Zk4HWHQwp1gN248ZqQE2AHY8oGd4aI/FpMhTzi o5MItRNKCWKNJiz8PEhl8ccTaIuRbwS5SmI0pu11vRYT0UrCBPJddgnWuMb/pk4E xE9tMuxN3dUj579qn1V43Q7fhuAVOXB5EbI+pVEC0eW7WyiveP3CA34AGsRsF7oE 0cdCHj2Uxh8Y4yUsb5b8Gz5MStiHWhE9tNhBFLeEgJFBUng3l2pP6HCxPs1DKhCh 9ez8KEE/N6P8t6jsmJqsxTEzaE+/fXQuSfGVwKN4+Vxosnjl2dE9sTJqGhFQyNbr cQIDAQAB -----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 100421129290718030495186828343517621039 . . . . . . . . [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 'GB' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford' . . . . . . . . . . . . [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 'Sectigo Limited' . . . . . . . . . . . . [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 'Sectigo RSA Domain Validation Secure Server CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-01 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-10-30 23:59:59 +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 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Domain Control Validated' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'EssentialSSL' . . . . . . . . . . . . [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 'bksit.ssu.ac.kr' . . . . . . . . [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 23419482343878874275322860493769634878230391811893905180388706295963740681347191962284694422346772196877697613576038388366923594807037721480441129838968091637527175853664748064644633169461446303566914897036113763998783529817129789455235773040088968830413096448543710903137907199398908885082166653188500561471401482547653516357686041966847729484756535786157459795448655301560755897650232649936449860756514785659193277070178476346143806358041644758202728686719280156348319219748130849360094213713970876858270466506300169892144357881628101546977205438510939229961640087977951104979632190309814469940201747072555748354929 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1 . . . . . . . . . . . . . . . . [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) 96783742a9ee3d5337ccbc03df077478c697e14a . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.37 (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 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://sectigo.com/CPS' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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.sectigo.com' . . . . . . . . . . . . . . . . [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 (40 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'bksit.ssu.ac.kr' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.bksit.ssu.ac.kr' . . . . . . . . . . . . . . . . [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) 00ef007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016d8516ecef000004030046304402204501095ce396dab07fcc21adb565a71a6a3de213922e2ca946cae4d69aaaec9f022030eeb912b0fbed373721e05167cc20e502c25fdf1700c109da6b47fe9c7018910076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016d8516ed0f0000040300473045022100bfeb28f798d7dc95059a26b3fb6218cbc7f510c047f1a4c348828d246a681c170220447c36fbb875947e97a8170171af0216a02e3f5c1d7a068159e00aabe346acd7 . . . . [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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