Java 小白提问，这段代码是标准 RSA 加密吗
<p>对加密方面不太熟，请大佬帮忙看看</p>
<pre><code>public static String encryptByPublicKey(String source, byte[] key) throws Exception {
byte[] data = source.getBytes("utf-8");
byte[] keyBytes = key;
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
Key publicKey = keyFactory.generatePublic(x509KeySpec);
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(1, publicKey);
int inputLen = data.length;
ByteArrayOutputStream out = new ByteArrayOutputStream();
int offSet = 0;
int i = 0;
while (inputLen - offSet > 0) {
byte[] cache;
if (inputLen - offSet > MAX_ENCRYPT_BLOCK) {
cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK);
} else {
cache = cipher.doFinal(data, offSet, inputLen - offSet);
}
out.write(cache, 0, cache.length);
i++;
offSet = i * MAX_ENCRYPT_BLOCK;
}
byte[] encryptedData = out.toByteArray();
out.close();
return (new String(Base64.encodeBase64(encryptedData), "UTF8")).replaceAll("\r\n", "");
}
</code></pre>
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注意：本文归作者所有，未经作者允许，不得转载
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2022年10月4日 02:49
@
大佬帮忙看看
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2022年10月4日 03:49
因为不改的话，加密长度问题可能抛异常
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