AEVerifierpublic class AEVerifier extends Object
| Fields Summary |
|---|
| private static final String | pub_exp | | private static final String | modulus |
| Methods Summary |
|---|
| public static void | verifyData(java.io.File file)
KeyFactory key_factory = KeyFactory.getInstance("RSA");
RSAPublicKeySpec public_key_spec =
new RSAPublicKeySpec( new BigInteger(modulus,16), new BigInteger(pub_exp,16));
RSAPublicKey public_key = (RSAPublicKey)key_factory.generatePublic( public_key_spec );
verifyData( file, public_key );
| | protected static void | verifyData(java.io.File file, java.security.interfaces.RSAPublicKey key)
ZipInputStream zis = null;
try{
zis = new ZipInputStream(
new BufferedInputStream( new FileInputStream( file ) ));
byte[] signature = null;
Signature sig = Signature.getInstance("MD5withRSA" );
sig.initVerify( key );
while( true ){
ZipEntry entry = zis.getNextEntry();
if ( entry == null ){
break;
}
if ( entry.isDirectory()){
continue;
}
String name = entry.getName();
ByteArrayOutputStream output = null;
if ( name.equalsIgnoreCase("azureus.sig")){
output = new ByteArrayOutputStream();
}
byte[] buffer = new byte[65536];
while( true ){
int len = zis.read( buffer );
if ( len <= 0 ){
break;
}
if ( output == null ){
sig.update( buffer, 0, len );
}else{
output.write( buffer, 0, len );
}
}
if ( output != null ){
signature = output.toByteArray();
}
}
if ( signature == null ){
throw( new AEVerifierException( AEVerifierException.FT_SIGNATURE_MISSING, "Signature missing from file" ));
}
if ( !sig.verify( signature )){
throw( new AEVerifierException( AEVerifierException.FT_SIGNATURE_BAD, "Signature doesn't match data" ));
}
}finally{
if ( zis != null ){
zis.close();
}
}
| | public static void | verifyData(java.lang.String data, byte[] signature)
KeyFactory key_factory = KeyFactory.getInstance("RSA");
RSAPublicKeySpec public_key_spec =
new RSAPublicKeySpec( new BigInteger(modulus,16), new BigInteger(pub_exp,16));
RSAPublicKey public_key = (RSAPublicKey)key_factory.generatePublic( public_key_spec );
Signature sig = Signature.getInstance("MD5withRSA" );
sig.initVerify( public_key );
sig.update( data.getBytes( "UTF-8" ));
if ( !sig.verify( signature )){
throw( new AEVerifierException( AEVerifierException.FT_SIGNATURE_BAD, "Data verification failed, signature doesn't match data" ));
}
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