初始化GnuPG python，键未导入

Question

我试图像这样初始化gpg：

BIN = C:/cygwin64/bin/gpg.exe
HOME = C:/cygwin64/home/Administrator/.gnupg    
gpg = gnupg.GPG(binary=BIN, homedir=HOME)

我的钥匙圈位于C:/cygwin64/home/Administrator/.gnupg，但只要我使用list_keys命令：

public_keys = gpg.list_keys()
private_keys = gpg.list_keys(True)
print ('public keys:')
print(public_keys)
print ('private keys:')
print(private_keys)

它输出空的空数组。

所以我尝试用这种方式指定环的特定路径：

 gpg = gnupg.GPG(binary=BIN, homedir=HOME, ignore_homedir_permissions=True,
                    keyring='C:/cygwin64/home/Administrator/.gnupg/secring.gpg',
                    secring='C:/cygwin64/home/Administrator/.gnupg/pubring.gpg')

同样的错误。

以下是我尝试解密文件时遇到的错误：

stderr:  gpg: WARNING: unsafe permissions on homedir `C:/cygwin64/home/Administrator/.gnupg'
gpg: invalid key resource URL `C:/cygwin64/home/Administrator/.gnupg/pubring.gpg'
gpg: keyblock resource `(null)': general error
gpg: invalid key resource URL `C:/cygwin64/home/Administrator/.gnupg/secring.gpg'
gpg: keyblock resource `(null)': general error
gpg: no valid OpenPGP data found.
[GNUPG:] NODATA 1
[GNUPG:] NODATA 2
gpg: decrypt_message failed: eof

我错过了什么？