Data must not be longer than 117 bytes异常 RSA加密解密内容超长报错_JAVA_编程开发_程序员俱乐部

class="java" name="code">
// 加密时超过117字节就报错。为此采用分段加密的办法来加密 
byte[] enBytes = null;
for (int i = 0; i < data.length; i += 64) {  
// 注意要使用2的倍数，否则会出现加密后的内容再解密时为乱码
    byte[] doFinal = cipher.doFinal(ArrayUtils.subarray(data, i,i + 64));  
    enBytes = ArrayUtils.addAll(enBytes, doFinal);  
}

// 解密时超过128字节就报错。为此采用分段解密的办法来解密
StringBuilder sb = new StringBuilder();
for (int i = 0; i < data.length; i += 128) {
    byte[] doFinal = cipher.doFinal(ArrayUtils.subarray(data, i, i + 128));
    sb.append(new String(doFinal));
}
dataReturn = sb.toString();