校验 @param data 待校验数据 @param publicKey 公钥 @param sign 数字签名 @return boolean 校验成功返回true 失败返回false @throws Exception
(byte[] data, byte[] publicKey, byte[] sign)
| 106 | * @throws Exception |
| 107 | */ |
| 108 | public static boolean verify(byte[] data, byte[] publicKey, byte[] sign) throws NoSuchAlgorithmException, InvalidKeySpecException, InvalidKeyException, SignatureException { |
| 109 | // 还原公钥 |
| 110 | // 转换公钥材料 |
| 111 | X509EncodedKeySpec keySpec = new X509EncodedKeySpec(publicKey); |
| 112 | |
| 113 | // 实例化密钥工厂 |
| 114 | KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM); |
| 115 | |
| 116 | // 取公钥匙对象 |
| 117 | PublicKey pubKey = keyFactory.generatePublic(keySpec); |
| 118 | |
| 119 | // 实例话Signature |
| 120 | Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); |
| 121 | |
| 122 | // 初始化Signature |
| 123 | signature.initVerify(pubKey); |
| 124 | |
| 125 | // 更新 |
| 126 | signature.update(data); |
| 127 | |
| 128 | // 验证 |
| 129 | return signature.verify(sign); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * 生成密钥 |
nothing calls this directly
no test coverage detected