initial addition of essential crypto, encoders, workflows and LLM instructions

pkg/crypto/p256k/btcec/helpers-btcec.go

@@ -0,0 +1,41 @@
+//go:build !cgo
+
+package btcec
+
+import (
+	"lol.mleku.dev/chk"
+	"next.orly.dev/pkg/encoders/hex"
+	"next.orly.dev/pkg/interfaces/signer"
+)
+
+func NewSecFromHex[V []byte | string](skh V) (sign signer.I, err error) {
+	sk := make([]byte, len(skh)/2)
+	if _, err = hex.DecBytes(sk, []byte(skh)); chk.E(err) {
+		return
+	}
+	sign = &Signer{}
+	if err = sign.InitSec(sk); chk.E(err) {
+		return
+	}
+	return
+}
+
+func NewPubFromHex[V []byte | string](pkh V) (sign signer.I, err error) {
+	pk := make([]byte, len(pkh)/2)
+	if _, err = hex.DecBytes(pk, []byte(pkh)); chk.E(err) {
+		return
+	}
+	sign = &Signer{}
+	if err = sign.InitPub(pk); chk.E(err) {
+		return
+	}
+	return
+}
+
+func HexToBin(hexStr string) (b []byte, err error) {
+	b = make([]byte, len(hexStr)/2)
+	if _, err = hex.DecBytes(b, []byte(hexStr)); chk.E(err) {
+		return
+	}
+	return
+}