webmail.ibn.a-star.edu.sg
- Institute of Bioengineering and Nanotechnology -
Issued by Thawte SSL CA
About this certificate
This digital certificate with serial number 36:b1:1a:75:3d:aa:46:80:86:2b:0e:fe:24:d8:10:c4 was issued on by Thawte, Inc..
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:
- CAs must include keyIdentifer field of AKI in all non-self-issued certificates (RFC 5280: 4.2.1.1)
- Sub certificates SHOULD include Subject Key Identifier in end entity certs (RFC 5280: 4.2 & 4.2.1.2)
Institute of Bioengineering and Nanotechnology
Organization:
Institute of Bioengineering and Nanotechnology
Organization unit: IT Department
Organization unit: IT Department
State / Province:
SINGAPORE
Locality: SINGAPORE
Country: SG
Locality: SINGAPORE
Country: SG
Thawte, Inc.
Organization:
Thawte, Inc.
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 36:b1:1a:75:3d:aa:46:80:86:2b:0e:fe:24:d8:10:c4Serial Number (int): 72697884947775266664355416150268973252
Serial Number lenght: 126 bits, 16 octets
SubjectKeyId:
AuthorityKeyId:
Fingerprint (sha1): 73:1b:91:98:d5:e4:11:7c:f9:93:86:63:c4:9f:e0:51:b2:96:9e:d7
Fingerprint (sha256): 0e:2e:ab:ee:a6:2b:3a:d7:9e:da:ef:89:7a:93:1b:29:c4:0c:d9:c7:21:1e:ac:5e:7e:90:92:76:9b:46:ec:dc
Revocation information
OCSP Server: http://ocsp.thawte.comCRL Distribution Point: http://svr-ov-crl.thawte.com/ThawteOV.crl
Check the revocation status for certificate webmail.ibn.a-star.edu.sg
0
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for webmail.ibn.a-star.edu.sg
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA1 with RSA
Key Usage
Extended Key Usages
Server Authentication
Client Authentication
Extensions
4 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
This certificate doesn't contain any subject alternative names.
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Certificate
The complete raw certificate details for webmail.ibn.a-star.edu.sg in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIEEjCCAvqgAwIBAgIQNrEadT2qRoCGKw7+JNgQxDANBgkqhkiG9w0BAQUFADA8 MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMVGhhd3RlLCBJbmMuMRYwFAYDVQQDEw1U aGF3dGUgU1NMIENBMB4XDTEwMTAyNTAwMDAwMFoXDTEyMTAyNDIzNTk1OVowgaox CzAJBgNVBAYTAlNHMRIwEAYDVQQIEwlTSU5HQVBPUkUxEjAQBgNVBAcUCVNJTkdB UE9SRTE3MDUGA1UEChQuSW5zdGl0dXRlIG9mIEJpb2VuZ2luZWVyaW5nIGFuZCBO YW5vdGVjaG5vbG9neTEWMBQGA1UECxQNSVQgRGVwYXJ0bWVudDEiMCAGA1UEAxQZ d2VibWFpbC5pYm4uYS1zdGFyLmVkdS5zZzCCASIwDQYJKoZIhvcNAQEBBQADggEP ADCCAQoCggEBAMwf1OaRPDnrv4hFdA5Ud3TMviRaDFkMbgq9Tw5UBf6j4T4Pu0rt 0aXzYqhdmS3T7eM7I+8WEtKspvz1yh+b7BRL8sBrvGcd3+bCBJMBR96wTaLwV1xy R+0pCEOyOsVxOxER0ezOVuwNUk8/E6WlXjoZZnE13UgnvOQYvKIKo4KClnWwRSXg yRxXZNgukxefe9RDsuQLWwcUrpl9pJtY7lZMUdejonT+0PkCK7gz9bCUUT/b0oyK JbnxEtzWHnoSvyjgx3hn6k9dbAGo+u7/i2i0SEt3qp89yBcdVIfM8R1lMYMGvP7b Q28BscQGiajr1psQO/DbXAsX7CIFm8NrfCkCAwEAAaOBoDCBnTAMBgNVHRMBAf8E AjAAMDoGA1UdHwQzMDEwL6AtoCuGKWh0dHA6Ly9zdnItb3YtY3JsLnRoYXd0ZS5j b20vVGhhd3RlT1YuY3JsMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAy BggrBgEFBQcBAQQmMCQwIgYIKwYBBQUHMAGGFmh0dHA6Ly9vY3NwLnRoYXd0ZS5j b20wDQYJKoZIhvcNAQEFBQADggEBAD+NHW0LQeqBx6u7Iaqb+HYo2F7pRweq0xMP plzbXFefJJhhN6qw86KVF/lTDkJr7U3xs9l3K6fa9HScCXpLygLCwPGLOKe4HWAQ qrpcMaQsjxHzZRcXOfhneLIiZP+mC3294Uxmp8RKIFy0zPSnWXkpuCRJolnkwqkG eSJ+78cefqHKy8kvfg24XUuxmMxBOI1GyycnkBbSNrinzRi27fNPSbLGhaLm8EKb MPMUANdxx23M4XzuY/gPPlx7C5NriKgx1jgGpzYc1rk+ZsblCm2KCTu8UQREixiY P3dC3HZDeHIVZwO6JWsHHhYd25xYJZkd9uNcgkc+QOAmXBeFnC4= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzB/U5pE8Oeu/iEV0DlR3 dMy+JFoMWQxuCr1PDlQF/qPhPg+7Su3RpfNiqF2ZLdPt4zsj7xYS0qym/PXKH5vs FEvywGu8Zx3f5sIEkwFH3rBNovBXXHJH7SkIQ7I6xXE7ERHR7M5W7A1STz8TpaVe OhlmcTXdSCe85Bi8ogqjgoKWdbBFJeDJHFdk2C6TF5971EOy5AtbBxSumX2km1ju VkxR16OidP7Q+QIruDP1sJRRP9vSjIolufES3NYeehK/KODHeGfqT11sAaj67v+L aLRIS3eqnz3IFx1Uh8zxHWUxgwa8/ttDbwGxxAaJqOvWmxA78NtcCxfsIgWbw2t8 KQIDAQAB -----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 72697884947775266664355416150268973252 . . . . . . . . [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 'Thawte, 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 'Thawte SSL CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2010-10-25 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2012-10-24 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 2.5.4.6 (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 2.5.4.8 (stateOrProvinceName) . . . . . . . . . . . . . . . . . . . . [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 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:20|false] TeletexString, T61String '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:20|false] TeletexString, T61String 'Institute of Bioengineering and Nanotechnology' . . . . . . . . . . . . [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:20|false] TeletexString, T61String 'IT Department' . . . . . . . . . . . . [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:20|false] TeletexString, T61String 'webmail.ibn.a-star.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 25768310981353685094850115359139694457782136849132326448379732989726118357494205468899969142192855469463014328535042056677799819430408013581278629772968935119748686025293129896497217798492051965498842691418265210573990616699430367893368613161326846512018132498437482159430866908875821669273988716683687700630935927072602476691993859925098600001388984895107924296659788711278054526901201915249405281180202868029232287985721087041063282304257158601259326877840285102795369012327834315281932206470184718635022172659262563198885949398326290037611082406058086533826350665206954840401388178324323170191597864426363784231977 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (51 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://svr-ov-crl.thawte.com/ThawteOV.crl' . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (38 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.thawte.com' . . . . [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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