verifysetup storage reader

1 files changed, 18 insertions, 0 deletions

diff --git a/verifysetup/core/crypt.go b/verifysetup/core/crypt.go
new file mode 100644
index 0000000..81130a3
--- /dev/null
+++ b/verifysetup/core/crypt.go
@@ -0,0 +1,18 @@
+package core
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"strings"
+)
+
+func CalculateBlockHash(block []byte) (string, error) {
+	hash := sha256.New()
+	if _, err := io.Copy(hash, bytes.NewReader(block)); err != nil {
+		return "", err
+	}
+	hashInBytes := hash.Sum(nil)[:32]
+	return strings.TrimSpace(fmt.Sprintf("%x", hashInBytes)), nil
+}