JOSE_JS JWE用javascript加密的数据不会被go解密

Question

Server side code for generating public key is:

privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
    return nil
}
publicKey := &privateKey.PublicKey
publicKeyBytes, err := json.Marshal(publicKey)
privateKeyBytes,err:=json.Marshal(privateKey)

The private key is a singleton stored in memory at server side and the public key is another singleton which is being returned to the clients requesting it.

Then the client which is a web browser here encrypts the data by server's public key:

cookieParts=document.cookie.split('pk=')

if(cookieParts.length==1)

{

     serverPublicKey= unescape(cookieParts[0].split(';')[0].toString())

}

else

{

    serverPublicKey= unescape(cookieParts[1].split(';')[0].toString())

}

serverPublicKey =serverPublicKey.replace(/([[