29Kas
e-signature + digital signature aws md5
I am trying to implement e-signature + digital signature to secure the e-signed document from altered, something like Docusign. I am using AWS s3 to store the documents.
My question are:
- Is MD5 (checksum) enough to track if the signed document is altered? or I need Sha256?
- Every time when the file is uploaded to etag (MD5) checksum is generated automatically, Can I use this value to verified if the document is altered?
