2 files changed, 35 insertions, 0 deletions
diff --git a/utils/blake2b-hasher.go b/utils/blake2b-hasher.go
new file mode 100644
index 0000000..38d13a1
--- /dev/null
+++ b/utils/blake2b-hasher.go
@@ -0,0 +1,20 @@
+package utils
+
+import (
+	"fmt"
+	"io"
+
+	"golang.org/x/crypto/blake2b"
+)
+
+func GenerateHash(file io.Reader) (string, error) {
+	//hasher is an instance hash writer provided by the blake2b, nil - no key provided
+	hasher, err := blake2b.New256(nil)
+	if err != nil {
+		return "", err
+	}
+	if _, err := io.Copy(hasher, file); err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("%x", hasher.Sum(nil)), nil
+}
diff --git a/utils/genid.go b/utils/genid.go
new file mode 100644
index 0000000..8525125
--- /dev/null
+++ b/utils/genid.go
@@ -0,0 +1,15 @@
+package utils
+
+import (
+	"crypto/rand"
+	"fmt"
+)
+
+// GenerateID creates a random 6-digit ID
+func GenerateID() (string, error) {
+	b := make([]byte, 3) // 3 bytes make 6 hex characters
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("%x", b), nil
+}