无法将sql连接字符串转换为byte []

Question

我试图转换包含普通字符和'_',';'和'='的sqlstring,当我尝试这样做时:

Byte[] byt = Convert.FromBase64String(value);

我收到此错误消息

An unhandled exception of type 'System.FormatException' occurred in mscorlib.dll

Additional information: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters.

Additonal: - 我用它来加密sqlstring -my解密,它使用同样的功能工作正常,但在尝试转换回加密时失败

Answer 1

这正是你的问题

Byte[] byt = Convert.FromBase64String(value);

输入不是有效的Base-64字符串

您正在尝试从您未提供的base64字符串进行转换

byte[] byt = Encoding.ASCII.GetBytes(value);

转换回字符串

string value = Encoding.ASCII.GetString(byt);