怎样在JSP里用RSA加密密码?

Question

RT,

Answer 1

你在类里面怎么用，在jsp页面就怎么用啊

Answer 2

public static String sign(String content,String privateKey)
{
String charset = "utf-8";
try 
        {
         PKCS8EncodedKeySpec priPKCS8  = new PKCS8EncodedKeySpec( Base64.decode(privateKey) ); 
         KeyFactory keyf  = KeyFactory.getInstance("RSA");
         PrivateKey priKey  = keyf.generatePrivate(priPKCS8);            java.security.Signature signature = java.security.Signature
                .getInstance("SHA1WithRSA");            signature.initSign(priKey);
            signature.update( content.getBytes(charset) );            byte[] signed = signature.sign();
            
            return Base64.encode(signed);
        }
        catch (Exception e) 
        {
         e.printStackTrace();
        }
        
        return null;
    }