根据Java中的已知参数创建RSA密钥

RSAPublicKeySpec spec = new RSAPublicKeySpec(modulus, exponent);KeyFactory factory = KeyFactory.getInstance("RSA");PublicKey pub = factory.generatePublic(spec);Signature verifier = Signature.getInstance("SHA1withRSA");verifier.initVerify(pub);verifier.update(url.getBytes("UTF-8")); // Or whatever interface specifies.boolean okay = verifier.verify(signature);