mail.sim.edu.sg
- Singapore Institute of Management -
Issued by Entrust Certification Authority - L1C
About this certificate
This digital certificate with serial number 4c:20:13:3f was issued on by Entrust, Inc..
With 3 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)
- The keyUsage extension SHOULD be critical (RFC 5280: 4.2.1.3)
Singapore Institute of Management
Organization:
Singapore Institute of Management
Locality:
Singapore
Country: SG
Country: SG
Entrust, Inc.
Organization:
Entrust, Inc.
Organization unit: www.entrust.net/rpa is incorporated by reference
Organization unit: (c) 2009 Entrust, Inc.
Organization unit: www.entrust.net/rpa is incorporated by reference
Organization unit: (c) 2009 Entrust, Inc.
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 4c:20:13:3fSerial Number (int): 1277170495
Serial Number lenght: 31 bits, 4 octets
SubjectKeyId: 2d:7c:c0:38:e4:f6:fa:5e:83:6f:d4:3e:48:08:b9:5d:67:96:45:a6
AuthorityKeyId: 1e:f1:ab:89:06:f8:49:0f:01:33:77:ee:14:7a:ee:19:7c:93:28:4d
Fingerprint (sha1): f8:1e:6d:d2:7f:00:ed:8c:d2:ea:f8:6c:0f:06:32:9b:64:25:46:0d
Fingerprint (sha256): 16:45:13:98:bf:d9:92:e5:bd:fb:df:4e:c4:3b:b4:2e:6a:88:0f:c2:a2:73:de:99:87:ec:fb:86:43:cf:fb:39
Issuing Certificate URL: http://aia.entrust.net/2048-l1c.cer
Revocation information
OCSP Server: http://ocsp.entrust.netCRL Distribution Point: http://crl.entrust.net/level1c.crl
Check the revocation status for certificate mail.sim.edu.sg
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for mail.sim.edu.sg
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA1 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
mail.sim.edu.sg
autodiscover.sim.edu.sg
legacy.sim.edu.sg
autodiscover.sim.edu.sg
legacy.sim.edu.sg
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Certificate
The complete raw certificate details for mail.sim.edu.sg in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFQzCCBCugAwIBAgIETCATPzANBgkqhkiG9w0BAQUFADCBsTELMAkGA1UEBhMC VVMxFjAUBgNVBAoTDUVudHJ1c3QsIEluYy4xOTA3BgNVBAsTMHd3dy5lbnRydXN0 Lm5ldC9ycGEgaXMgaW5jb3Jwb3JhdGVkIGJ5IHJlZmVyZW5jZTEfMB0GA1UECxMW KGMpIDIwMDkgRW50cnVzdCwgSW5jLjEuMCwGA1UEAxMlRW50cnVzdCBDZXJ0aWZp Y2F0aW9uIEF1dGhvcml0eSAtIEwxQzAeFw0xMzA2MjAwNTMyMzlaFw0xNzA3MDEx ODA5NTNaMGcxCzAJBgNVBAYTAlNHMRIwEAYDVQQHEwlTaW5nYXBvcmUxKjAoBgNV BAoTIVNpbmdhcG9yZSBJbnN0aXR1dGUgb2YgTWFuYWdlbWVudDEYMBYGA1UEAxMP bWFpbC5zaW0uZWR1LnNnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA p6j7jHTXgjU/rnUnF8QRjer/o/9u2RNDnnl+iQ+FW1dlwUUna1kbOLobDvZQyNQX o15KPzuXVZiDtw0oljw5yAKpJyee+LfApUiUROEkfITMUp6h/YczZHTMuiCu3Zr1 XdqYwB9Eyrb7J/GgNpVmAEcTXH/xwmD85mNg0AerGG0weTFfY0agS8EgBosutDfh 8iuUm1otkSbwX+Ez15qXE2wv2iHGfFl34iDXFOeu5KGUI8oumqzQ0Zby6fMCCL4r DDkPHHIKW7gy2Ic64/O8ppAXQXO6MAlw8b54LwM/9do+OiG2mTrJqw0ff0bSNerq i4DOPKljmjTJ0ODwl40hjwIDAQABo4IBqjCCAaYwCwYDVR0PBAQDAgWgMB0GA1Ud JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAzBgNVHR8ELDAqMCigJqAkhiJodHRw Oi8vY3JsLmVudHJ1c3QubmV0L2xldmVsMWMuY3JsMGQGCCsGAQUFBwEBBFgwVjAj BggrBgEFBQcwAYYXaHR0cDovL29jc3AuZW50cnVzdC5uZXQwLwYIKwYBBQUHMAKG I2h0dHA6Ly9haWEuZW50cnVzdC5uZXQvMjA0OC1sMWMuY2VyMEoGA1UdIARDMEEw NQYJKoZIhvZ9B0sCMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly93d3cuZW50cnVzdC5u ZXQvcnBhMAgGBmeBDAECAjBGBgNVHREEPzA9gg9tYWlsLnNpbS5lZHUuc2eCF2F1 dG9kaXNjb3Zlci5zaW0uZWR1LnNnghFsZWdhY3kuc2ltLmVkdS5zZzAfBgNVHSME GDAWgBQe8auJBvhJDwEzd+4Ueu4ZfJMoTTAdBgNVHQ4EFgQULXzAOOT2+l6Db9Q+ SAi5XWeWRaYwCQYDVR0TBAIwADANBgkqhkiG9w0BAQUFAAOCAQEAcM6YgN+43VpR ITr94li3Ekm4zppTbPUHOwcL1DEDakjhXj4KsxgbBd+IhNplHVsJjOwlY68xciFL 3cdov+KVEf5M5LW9QqqhwzHgHsVyERcMSYP4RfuFvGa6N8ucWQcgritLH/JIM/BT TG40wWN/TqfHUTqaFiuLQQL5gdpHhvqCP8w9+Tqb4IC7eBQ0DLYMdaq4AbzGzgpD uCa7T1pLCglKR/NdrMqw61H2T8Zzl4A1jS7RU1oKjI1F6uGzaWmZ5QFW2qA5e7Qe ioppVNpGQMqWhH8zoauUhIj3RVre34o64MPwCS4oYYpuOyYwN7dxGMT5NwiBC0TE 1YvgkBeipg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp6j7jHTXgjU/rnUnF8QR jer/o/9u2RNDnnl+iQ+FW1dlwUUna1kbOLobDvZQyNQXo15KPzuXVZiDtw0oljw5 yAKpJyee+LfApUiUROEkfITMUp6h/YczZHTMuiCu3Zr1XdqYwB9Eyrb7J/GgNpVm AEcTXH/xwmD85mNg0AerGG0weTFfY0agS8EgBosutDfh8iuUm1otkSbwX+Ez15qX E2wv2iHGfFl34iDXFOeu5KGUI8oumqzQ0Zby6fMCCL4rDDkPHHIKW7gy2Ic64/O8 ppAXQXO6MAlw8b54LwM/9do+OiG2mTrJqw0ff0bSNerqi4DOPKljmjTJ0ODwl40h jwIDAQAB -----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 1277170495 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . . . . . [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 'Entrust, Inc.' . . . . . . . . . . . . [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 'www.entrust.net/rpa is incorporated by reference' . . . . . . . . . . . . [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 '(c) 2009 Entrust, Inc.' . . . . . . . . . . . . [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 'Entrust Certification Authority - L1C' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2013-06-20 05:32:39 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-07-01 18:09:53 +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 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'SG' . . . . . . . . . . . . [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 'Singapore' . . . . . . . . . . . . [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 'Singapore Institute of Management' . . . . . . . . . . . . [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 'mail.sim.edu.sg' . . . . . . . . [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 21165125360974941689352167427809122470892675852032243442419761756797551118615572195500803190228413725813517847778967304513764466915991983566830245589297619668070770559232352781963876222524758498875319674958309825917967547819943563937411115225940800278242442662021604965186161824328441382611147931098944344080767486971981113963633521529661425311973066405126492277182636807965736548327933397530843048048918388576241091037227687664560013661929686049125559477599037281507503645106766237171751174409000623303649338330612781726921593952006264315198026960128865719415542744524804785315736091676909668838590828073247333753231 . . . . . . . . . . . . . . . . . . . . [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: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 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (44 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.entrust.net/level1c.crl' . . . . . . . . . . . . . . . . [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 (88 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.entrust.net' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://aia.entrust.net/2048-l1c.cer' . . . . . . . . . . . . . . . . [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 (67 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113533.7.75.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://www.entrust.net/rpa' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.2 (Organization Validation Certificates Policy) . . . . . . . . . . . . . . . . [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 (63 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.sim.edu.sg' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.sim.edu.sg' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'legacy.sim.edu.sg' . . . . . . . . . . . . . . . . [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 1ef1ab8906f8490f013377ee147aee197c93284d . . . . . . . . . . . . . . . . [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) 2d7cc038e4f6fa5e836fd43e4808b95d679645a6 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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