Certificate summary -

Owner: www.hatena.ne.jp, "Hatena Co., Ltd.", L=Kyoto-shi, ST=Kyoto, JP

Issuer: Cybertrust Japan Public CA G1, "Cybertrust Japan Co., Ltd.", JP

Expiration: Fri Dec 13 09:59:00 EST 2013

MD5: 03:47:3C:CF:86:5D:9B:18:05:15:73:A6:66:71:94:1F

Hash: Owner Hash=6379d49f, Issuer Hash=23175a1f

Information extracted out of the certificate:

Owner: CN=www.hatena.ne.jp, O="Hatena Co., Ltd.", L=Kyoto-shi, ST=Kyoto,
C=JP
Issuer: CN=Cybertrust Japan Public CA G1, O="Cybertrust Japan Co., Ltd.",
C=JP
Serial number: 7acadb9733ab300e1d0b682567cf0876d69de791
Valid from: Fri Nov 30 00:16:41 EST 2012 until: Fri Dec 13 09:59:00 EST
2013
Certificate fingerprints:
	 MD5:  03:47:3C:CF:86:5D:9B:18:05:15:73:A6:66:71:94:1F
	 SHA1: DA:9F:39:63:58:63:D7:CE:0E:97:B8:41:AA:C4:0C:79:42:73:B5:6E
	 SHA256:
96:F2:84:96:FB:0C:60:3F:5B:18:A5:62:53:5D:22:8D:8D:F5:4B:99:F3:B1:89:33:B9:
3D:5A:31:1B:3D:42:A2
	 Signature algorithm name: SHA1withRSA
	 Version: 3

Extensions: 

#1: ObjectId: 2.5.29.19 Criticality=false
BasicConstraints:[
  CA:false
  PathLen: undefined
]

#2: ObjectId: 2.5.29.31 Criticality=false
CRLDistributionPoints [
  [DistributionPoint:
     [URIName:
http://sureseries-crl.cybertrust.ne.jp/SureServer/ctjpubcag1/cdp.crl]
]]

#3: ObjectId: 2.5.29.32 Criticality=false
CertificatePolicies [
  [CertificatePolicyId: [1.2.392.200081.1.1]
[PolicyQualifierInfo: [
  qualifierID: 1.3.6.1.5.5.7.2.2
  qualifier: 0000: 30 4B 1A 49 46 6F 72 20   6D 6F 72 65 20 64 65 74 
0K.IFor more det
0010: 61 69 6C 73 2C 20 70 6C	65 61 73 65 20 76 69 73  ails, please vis
0020: 69 74 20 6F 75 72 20 77	65 62 73 69 74 65 20 68  it our website h
0030: 74 74 70 73 3A 2F 2F 77	77 77 2E 63 79 62 65 72  ttps://www.cyber
0040: 74 72 75 73 74 2E 6E 65	2E 6A 70 20 2E		 trust.ne.jp .

], PolicyQualifierInfo: [
  qualifierID: 1.3.6.1.5.5.7.2.1
  qualifier: 0000: 16 36 68 74 74 70 73 3A   2F 2F 77 77 77 2E 63 79 
.6https://www.cy
0010: 62 65 72 74 72 75 73 74	2E 6E 65 2E 6A 70 2F 73  bertrust.ne.jp/s
0020: 73 6C 2F 72 65 70 6F 73	69 74 6F 72 79 2F 69 6E  sl/repository/in
0030: 64 65 78 2E 68 74 6D 6C				 dex.html

]]  ]
]

#4: ObjectId: 2.5.29.37 Criticality=false
ExtendedKeyUsages [
  serverAuth
  clientAuth
]

#5: ObjectId: 2.5.29.15 Criticality=false
KeyUsage [
  DigitalSignature
  Key_Encipherment
]

#6: ObjectId: 2.5.29.17 Criticality=false
SubjectAlternativeName [
  DNSName: www.hatena.ne.jp
]

Certificate in PEM format (Base64 encoded X.509):

-----BEGIN CERTIFICATE-----
MIIDtjCCAx+gAwIBAgIUesrblzOrMA4dC2glZ88Idtad55EwDQYJKoZIhvcNAQEF
BQAwWjELMAkGA1UEBhMCSlAxIzAhBgNVBAoTGkN5YmVydHJ1c3QgSmFwYW4gQ28u
LCBMdGQuMSYwJAYDVQQDEx1DeWJlcnRydXN0IEphcGFuIFB1YmxpYyBDQSBHMTAe
Fw0xMjExMzAwNTE2NDFaFw0xMzEyMTMxNDU5MDBaMGcxCzAJBgNVBAYTAkpQMQ4w
DAYDVQQIEwVLeW90bzESMBAGA1UEBxMJS3lvdG8tc2hpMRkwFwYDVQQKExBIYXRl
bmEgQ28uLCBMdGQuMRkwFwYDVQQDExB3d3cuaGF0ZW5hLm5lLmpwMIGfMA0GCSqG
SIb3DQEBAQUAA4GNADCBiQKBgQDjewW2rd5U4vd3FWd3Yq9BZL0GaV4fzM4eZmjK
zDIVAyjOO/aSDnqeSXlAvWexcgEl9i2taAU3UibOANu1EMyocve2woI+vRSzuCwC
BM2NXX5kOjbK/J+pyniuiIBQAYWBht/viYYdR5BP5ShJ0VMr/q9K5a+3JylnIr/M
UFvdrQIDAQABo4IBajCCAWYwCQYDVR0TBAIwADCBuAYDVR0gBIGwMIGtMIGqBggq
gwiMmxEBATCBnTBXBggrBgEFBQcCAjBLGklGb3IgbW9yZSBkZXRhaWxzLCBwbGVh
c2UgdmlzaXQgb3VyIHdlYnNpdGUgaHR0cHM6Ly93d3cuY3liZXJ0cnVzdC5uZS5q
cCAuMEIGCCsGAQUFBwIBFjZodHRwczovL3d3dy5jeWJlcnRydXN0Lm5lLmpwL3Nz
bC9yZXBvc2l0b3J5L2luZGV4Lmh0bWwwGwYDVR0RBBQwEoIQd3d3LmhhdGVuYS5u
ZS5qcDALBgNVHQ8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMC
MFUGA1UdHwROMEwwSqBIoEaGRGh0dHA6Ly9zdXJlc2VyaWVzLWNybC5jeWJlcnRy
dXN0Lm5lLmpwL1N1cmVTZXJ2ZXIvY3RqcHViY2FnMS9jZHAuY3JsMA0GCSqGSIb3
DQEBBQUAA4GBADM0cLd4l1s+0TLmBcziQsmnbSZ9KbSaqrflF2gmXBBMNeSV9k8c
ORWYJBxv7LuB18AS9cbpmehNEqB6mbjEXI9wieRoNt8BxzTt6eNamalCoXbuKXDP
wki7QwxhhHUIeHDyOydOVBZg4QFMqojYSaEXeXKXWqlfj0Sle8Rl1NMY
-----END CERTIFICATE-----

Visit the Web site using this certificate: https://www.hatena.ne.jp

Search for the certificate of the issuer.