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一直在尝试使用 php 中的公钥加密 64 字节的数据字符串，但无论我尝试什么，结果都被接收者拒绝。我一直在使用phpseclib，

    $key = PublicKeyLoader::load("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");

$key->withPadding(RSA::ENCRYPTION_OAEP)->withHash('sha256')->withMGFHash('sha1');
    
    $random_key = bin2hex(random_bytes(64));
    
    $generatekey = base64_encode($key->encrypt($random_key));

但没有运气。当我通过这个网站https://www.devglan.com/online-tools/rsa-encryption-decryption进行操作时，输出字符串有效。那么有谁知道如何做到这一点？任何帮助都非常感谢。

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