fix password hash format

.github/workflows/ci.yml

@@ -77,7 +77,8 @@ jobs:
           docker pull ${{ needs.build.outputs.IMAGE }}
           docker tag ${{ needs.build.outputs.IMAGE }} bitcoin-core-docker
       - uses: actions/checkout@v4
-      - run: ./examples/${CONTAINER_NAME}.sh
+      - name: Start ${{ env.CONTAINER_NAME }}
+        run: ./examples/${CONTAINER_NAME}.sh
       - name: Wait for healthy
         run: |
           while ! docker exec -i ${CONTAINER_NAME} /opt/wallet-health.sh; do
@@ -102,4 +103,6 @@ jobs:
             echo "waiting for ${CONTAINER_NAME} health"
             echo "Last log: $(docker logs -n1 ${CONTAINER_NAME})"
             sleep 15
-          done
+          done
+      - name: Ensure default user works with whitelist
+        run: docker exec ${CONTAINER_NAME} bitcoin-cli -rpcuser=default -rpcpassword=default getblockcount

wallet.sh

@@ -12,7 +12,7 @@ generate_rpcauth_entry() {
   local salt
   local hashed_password
   salt=$(head -c 16 /dev/urandom | xxd -ps | tr -d '\n')
-  hashed_password=$(echo -n "${password}${salt}" | sha256sum | awk '{print $1}')
+  hashed_password=$(echo -n "${password}" | openssl dgst -sha256 -hmac "${salt}" -binary | xxd -p -c 64)
 
   echo "rpcauth=${user}:${salt}\$${hashed_password}"
 }