Hello,
I am using PKCS7_sign for applying Digital Signature to files, when I am creating an enveloped PKCS#7 file that contains also the signed file content all the signed file data is being loaded to memory (this would be a problem with large files), I know that I can use the DEACHED option to create a PCKS#7 file without the content of the signed file, but this is not good for me. I have searched the OpenSSL API and tried to think of a workaround but could not, is there a way (using OpenSSL API) to create a PKCS#7 digital signature of a file that will contain the signed file content without all the signed file being loaded to memory? Any help would be great. Thanks, Hagai.
