In this blog I will show you a simple means by using openssl to look at a self signed certificate for identification purpose.
A SelfSign basically means that the issuer/subject line are the same.
example #1 my privateCA root for SOCPUPPETS
example#2 my sub-CA which was signed by the above root-CA
notice the issuer is the above rootCA that we mention earlier?
Now let's take a public CA, Here's Let'sEncrypt rootCA
Keep in mind ALL rootCAs certificates are "Self-Signed" . Yeap no higher level signs the root CA certificates These root CAs pays money to have them install into OSes or Browsers certificate store for trust { authenticity }
CA-Chain can be validate for a quick check
Socpuppets root Certificate rsaEncryption
-----BEGIN CERTIFICATE-----
MIIGJDCCBAygAwIBAgIJAP49tGDTJnq1MA0GCSqGSIb3DQEBCwUAMIGeMQswCQYD
VQQGEwJVUzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjETMBEGA1UE
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f/kawIOA8NoL8lUWQzRHJsBnCYkPiTM5DkvDlZA6ipmNMK53xxeRZQ==
-----END CERTIFICATE-----
Socpuppets root Certificate dsaEncryption
-----BEGIN CERTIFICATE-----
MIIIYTCCCCCgAwIBAgIJAMe/RLN+hn+qMAkGByqGSM44BAMwgZ4xCzAJBgNVBAYT
AlVTMQ4wDAYDVQQIDAVUZXhhczEPMA0GA1UEBwwGQXVzdGluMRMwEQYDVQQKDApT
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-----END CERTIFICATE-----
Socpuppets root Certificate ecDSA
-----BEGIN CERTIFICATE-----
MIICpjCCAk2gAwIBAgIJAJqR2TpuR92YMAkGByqGSM49BAEwgaYxCzAJBgNVBAYT
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0qzZykeoSv0NDg==
-----END CERTIFICATE-----
NSE ( network security expert) and Route/Switching Engineer
kfelix -----a----t---- socpuppets ---dot---com
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