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Results tagged with openssl
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user 15013
OpenSSL is a general-purpose cryptography library. Originally used by Bitcoin Core before it was replaced with libsecp256k1.
5
votes
4
answers
7k
views
How do these OpenSSL commands create a Bitcoin private/key from a ECDSA keypair
ecparam -genkey -name secp256k1 -rand /dev/urandom -out $PRIVATE_KEY
echo "Generating public key"
openssl ec -in $PRIVATE_KEY -pubout -out $PUBLIC_KEY
echo "Generating BitCoin private key"
openssl ec … -in $PRIVATE_KEY -outform DER|tail -c +8|head -c 32|xxd -p -c 32 > $BITCOIN_PRIVATE_KEY
echo "Generating BitCoin public key"
openssl ec -in $PRIVATE_KEY -pubout -outform DER|tail -c 65|xxd -p -c 65 > …
- 175
1
vote
3
answers
1k
views
Sign a tx with "low s" value using OpenSSL
I currently try to sign a tx using OpenSSL. … Is there a way to create proper signatures with OpenSSL except trying and hoping to get a small s value? …
- 175