-1
votes
0answers
9 views

SHA-256 RSA signature algorithm has thumbprint algorithm value as SHA-1. Is that valid?

The field “Thumbprint algorithm” has an SHA-1 value , is that valid? Or should that be “SHA-256”? Also, there is and Alert symbol for the 3 fields: Basic Constraints Key Usage Enhanced Key Usage ...
9
votes
2answers
3k views

How can I calculate the SHA-256 “midstate”?

Recently I've been trying to implement some Bitcoin-related code, and I've stumbled upon a weird concept, a SHA-256 "midstate". Some explanation is given here. The general concept is that Bitcoin ...