从pem文件中导出私钥

AssetManager am = context.getAssets();

 

InputStream ins = null;

try {

ins = am.open("test.pem");

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

try {

// BASE64Decoder base64Decoder= new BASE64Decoder();

// byte[] buffer= base64Decoder.decodeBuffer(priKeyStr);

// PKCS8EncodedKeySpec keySpec= new PKCS8EncodedKeySpec(buffer);

// KeyFactory keyFactory= KeyFactory.getInstance("RSA");

// RSAPrivateKey privateKey= (RSAPrivateKey)

// keyFactory.generatePrivate(keySpec);

//

// int i = 0 ;

// i++;

 

 

PEMReader reader = new  PEMReader(new InputStreamReader(ins),new PasswordFinder() {

 

@Override

public char[] getPassword() {

 

return KEYPASS.toCharArray();

}

});

KeyPair keyPair = (KeyPair) reader.readObject();

reader.close();

PublicKey key = keyPair.getPublic();

Log.i("pubk", key.toString());

PrivateKey prik = keyPair.getPrivate();

Log.i("prik", prik.toString());