how to generate smime with file attachenment (eg, csv , pdf ) through openssl

开发者_Python百科I could able to generate SMIME content through openssl without any file attachment.

But i need to generate SMIME content with file attachment.

You need to use a tool like makemime to generate a MIME message of type multipart/mixed that includes your text message and attached files as MIME components.

You would then pipe that plaintext multipart/mixed message through openssl smime to turn it into an S/MIME message.