android - How to verify X.509 certificate format? -


i have ssl certificate (a certificate chain starting root of server) seems okay. can open certificate on windows & import using windows wizard.

but when try convert keystore through following command (using bouncycastle) :

keytool -importcert -v -trustcacerts -file "test.crt" -alias ca -keystore "test.bks" -provider org.bouncycastle.jce.provider.bouncycastleprovider -providerpath "bcprov-ext-jdk15on-1.46.jar" -storetype bks -storepass testtest

i below error:

keytool error: java.lang.exception: input not x.509 certificate java.lang.exception: input not x.509 certificate         @ sun.security.tools.keytool.addtrustedcert(unknown source)         @ sun.security.tools.keytool.docommands(unknown source)         @ sun.security.tools.keytool.run(unknown source)         @ sun.security.tools.keytool.main(unknown source)

i'm developing android application need call rest based api through https.

is there web based tool (or otherwise) through can validate certificate ?

it appears test.crt not x.509 format. typically if it's pem-encoded x.509 certificate start line:

-----begin certificate----- mii...

or

-----begin trusted certificate----- mii...

a der-endcoded x.509 certificate appear random binary data you, can decode such der-encoded files openssl command line:

openssl asn1parse -inform d -in test.crt -i

the beginning oid in output tell if it's x.509 certificate or else pkcs#7 bag.


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