Java coding for validating x 509 certificate dating a man in his 30s

The extension is discussed in section 4.2.1.7 of RFC 3280 and can be identified in a certificate by the object identifier given in The Subject Key Identifier provides another means of identifying that a certificate contains a particular public key. The extension can be identified in a certificate by the object identifier given in Construction of a version 3 certificate has a couple of difference from a version 1 certificate.

Generally a version 3 certificate has a parent certificate so the issuer is not the same as the subject, and they normally also require extensions if you're planning to use them in conjunction with path validation APIs and storage mechanisms such as PKCS12.

You just need to add above libraries in to following code and run it.

Please note, you need to configure a trust store which contains the public certificate of wso2carbon.jks” file. You can use this for validation and processing purpose of JWT token (specially retrieved from WSO2IS )..

Note: this document now refers to an out of date version of the APIs. The Bouncy Castle APIs have support for creating two kinds of X.509 certificates - version 1 and version 3 - as well as PKCS10 certification requests.

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In June of 1996, the basic X.509 v3 format was completed by ISO/IEC and ANSI X9, which is described below in ASN.1: These certificates are widely used to support authentication and other functionality in Internet security systems.

CA certificates are either signed by themselves, or by some other CA such as a "root" CA.

ey J0e XAi Oi JKV1Qi LCJhb Gci Oi JTSEEy NTZ3a XRo Ul NBIiwie DV0Ijoi Tm1Kb U9HVXh Nelps WWp NMlp EUmh OVFps WVRBMVl6ZGha VFJp T1d FME5XSTJNMkpt T1Rj MVp BIn0Jpc3Mi Oi Jod HRw Oi8vd3Nv Mi5vcmcv Z2F0ZXdhe SIs Im V4c CI6MTQy Njcz ODI1MDkz NSwia HR0c Dov L3dzbz Iub3Jn L2dhd GV3YXkvc3Vic2Nya WJlci I6Im Fkb Wlu Iiwia HR0c Dov L3dzbz Iub3Jn L2dhd GV3YXkv YXBwb Glj YXRpb25u YW1l Ijoi T3Blbmlk Q29ubm Vjd CIs Imh0d HA6Ly93c28y Lm9y Zy9n YXRld2F5L2Vu ZHVz ZXIi Oi Jhc2Vs YUBj YXJib24uc3Vw ZXIi LCAia HR0c Dov L3dzbz Iub3Jn L2Ns YWltcy9jb3Vud HJ5Ijoi VW5pd GVk IFN0YXRlcy Is ICJod HRw Oi8vd3Nv Mi5vcmcv Y2xha W1z L2Vt YWls YWRkcm Vzcy I6Im Fz ZWxh QHNv YXNl Y3Vya XR5Lm9y Zy Is ICJod HRw Oi8vd3Nv Mi5vcmcv Y2xha W1z L2Z1b Gxu YW1l Ijoi YXNlb GEi LCAia HR0c Dov L3dzbz Iub3Jn L2Ns YWltcy9na XZlbm5hb WUi Oi JBc2Vs YSIs ICJod HRw Oi8vd3Nv Mi5vcmcv Y2xha W1z L2xhc3Ru YW1l Ijoi UGF0a GJlcml5YSIs ICJod HRw Oi8vd3Nv Mi5vcmcv Y2xha W1z L29y Z2Fua Xphd Glvbi I6In Nv YXNl Y3Vya XR5Lm9y Zy Is ICJod HRw Oi8vd3Nv Mi5vcmcv Y2xha W1z L3Jvb GUi Oi JJbn Rlcm5hb C9ldm Vye W9u ZSIs ICJod HRw Oi8vd3Nv Mi5vcmcv Y2xha W1z L3Nob3ci Oi JVbml0ZWQg U3Rhd GVz Iiwg Imh0d HA6Ly93c28y Lm9y Zy9jb GFpb XMvc3R1ZGlv Ijoi QXNlb GEi LCAia HR0c Dov L3dzbz Iub3Jn L2Ns YWltcy90ZWxlc Ghvbm Ui Oi Ir OTQ3Nzc2Mj U5Mz Mif Q.d57VGVAh Zm Tp IMl8hi IUO8D7h AZl-b Zm5Tn DW9si3qn HFli MHsxl E6HJ7b Sjmoob Igdq J7x To Wt Om2orr QKFxz F4xxkp Ne U1-q GFo G6-Iy RF-JAJao0xq6WIGk8f R2BSN_zxs Nb R84-3FMWd6mlj Pn Im WYLe_8m OBFy Dcsu DCkk It has been signed using RS256 (RSA algorithm using SHA-256).

While there are a range of standard extensions, in some case people even make up their own if it suits their organisation.

The basic api support for extensions in the Bouncy Castle Package is provided by the org.bouncycastle.asn1.x509 package, most particulary the class also provides definitions for the ASN.1 object identifiers associated with most common extensions.

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