rsa Verify - Android java.security

Android examples for java.security:RSA

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Description

rsa Verify

Demo Code


//package com.java2s;
import java.security.KeyFactory;

import java.security.PublicKey;

import java.security.spec.X509EncodedKeySpec;

import android.util.Base64;

public class Main {
    /**// ww w . j  a v a 2s.  c o  m
     * rsaVerify
     * @param content
     * @param sign
     * @param publicKey
     * @return
     * @throws Exception
     */
    public static boolean rsaVerify(byte[] content, byte[] sign,
            byte[] publicKey) throws Exception {
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        byte[] encodedKey = Base64.decode(publicKey, Base64.DEFAULT);
        PublicKey publicKeyObj = keyFactory
                .generatePublic(new X509EncodedKeySpec(encodedKey));
        java.security.Signature signature = java.security.Signature
                .getInstance("SHA1WithRSA");
        signature.initVerify(publicKeyObj);
        signature.update(content);
        return signature.verify(sign);
    }
}

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