rsa. sign a message with php and validate it in java

With the java crypto package we can create a public and private key, sign a message and validate the signature. See: [login to view URL] +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ [login to view URL]("RSA") , .initialize(1024) , and .generateKeyPair() : Generates the keys. [login to view URL]("MD5WithRSA") : Creates the Signature object. .initSign([login to view URL]()) : Initializes the Signature object. .update(plainText) and .sign() : Calculates the signature with a plaintext string. .initVerify([login to view URL]()) and .verify(signature) : Verifies the signature. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I need the following php function, that takes the private key and use it to sign a message. function sign($message, $privateKey) { ... return $signature; } I need a complete compatible example with php and java. 1. I use java to create the public and private key, and stores them in a text file 2. A simple php example that prints the result of sign($message, $privateKey) using MD5 with RSA 3. A simple java example that takes that signature and validates it. Please, bid only if you have experience in MD5 with RSA. Thanks, David