I am trying to sign a bitcoin transaction in c#. I have 2 bits of code I am trying to complete. I can create a set of private and public keys using Bouncy castle. I can convert this to wallet import format ok. I can also generate a bitcoin address from the ECDSA public key. However, I want to sign a transaction and all I have is my private key ... I am trying to extract the parameters of ECDSA signature used in bitcoin to run some tests. For that i need to obtain : --- r and s , i.e., the ECDSA signature --- H(m) , the hash of the mes... Although there are several implementations of ECDSA secp256k1 public available over the internet (the most popular being OpenSSL), it seems that there are no complete set of test-vectors available.. The few test vectors I could find always miss some important information: Stack Exchange network consists of 177 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchange If viewed with openssl, i have the following parameters: Signature Algorithm: ecdsa-with-SHA256 Public Key Info: NIST CURVE: P-384. The problem is with this certificate I can't get a successful TLS handshake. I wonder if the problem is the signature algorithm or the ECDSA curve (both the certificate and the CA use P-384 public keys).
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