RSAPublic key and RSAprivate key retrieval from key.DER files

Hi, i was using the crptix library ti extract the keys from .der files.however i now want to change the dependency to java and no third party library.

i used the sun.security.derinputstream and sun.security.deroutstream to get the values and retrieve the values

the follwing code retrieves the public keybyte[] decoded = (new sun.misc.BASE64Decoder()).decodeBuffer(stream);

DerInputStream der =new DerInputStream(decoded);

DerValue value = der.getDerValue();

byte[] inner = value.getDataBytes();

DerInputStream der1 =new DerInputStream(inner);

DerValue modulus = der1.getDerValue();

DerValue exponent = der1.getDerValue();

and a similar for private key .can any one suggest a better solution as the sun apis are not proprietary and can be deprecated

Any help is really appreciated

Thanks regards

Siva

[1047 byte] By [sar_ana] at [2007-11-26 17:04:34]