Repository navigation
HASH is mismatching for larger size of file #99
Description
Hello Team,
I have attached the file here that is the HASH generator for the SHA
sha.txt
Could you give me a suggestion for this code?
We are checking the hardware crypto accelerator using the /dev/crypto, and the code is working as expected for the lower file size.
If it is more than the 20/30MB file our system will hang because it cannot handle the large memory at a time. So we made changes in the code as below in the code
sha1.txt
but in this code, we are not able to get the HASH value as we expected.
Can anyone suggest a different way to handle the whole data?
Thanks,
Ashoka A D
Activity
Ashok-d-attikatti commentedon Sep 18, 2024
Hello,
Any comment on this.?
Thanks,
Ashoka A D
cristian-stoica commentedon Sep 18, 2024
@Ashok-d-attikatti Have you looked at https://github.com/cryptodev-linux/cryptodev-linux/blob/master/examples/sha-copy.c ?
It seems to do what you want. In particular you should use COP_FLAG_UPDATE for intermediary chunks and COP_FLAG_FINAL at the end.
Ashok-d-attikatti commentedon Sep 18, 2024
Hello @cristian-stoica ,
I have used the COP_FLAG_UPDATE and COP_FLAG_FINAL flags while doing work around methods, but did not work as expected.
Ashok-d-attikatti commentedon Sep 19, 2024
Look at this example: https://github.com/cryptodev-linux/cryptodev-linux/blob/master/examples/sha-copy.c. This will not work for a file, and the data size is small as well. If we want a larger file size, would this work?