basic cryptographic checks

Author: sondelll

internal/cryptography/checksum.go

@@ -0,0 +1,12 @@
+package cryptography
+
+import (
+	"crypto/sha256"
+	"fmt"
+)
+
+func CalculateChecksum(data []byte) string {
+	sum := sha256.Sum224(data)
+
+	return fmt.Sprintf("%x", sum)
+}

internal/cryptography/checksum_test.go

@@ -0,0 +1,15 @@
+package cryptography
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestSum224(t *testing.T) {
+	msg := "ABCD"
+	res := CalculateChecksum([]byte(msg))
+
+	if !strings.HasSuffix(res, "60b6") {
+		t.Error("Expected input to generate another checksum...")
+	}
+}

internal/txpfiber/context.go

@@ -8,13 +8,17 @@ import (
 
 	"github.com/charmbracelet/log"
 	"github.com/gofiber/fiber/v2"
+	"github.com/unhanded/txp/internal/cryptography"
 )
 
 func placeContext(c *fiber.Ctx, targetDir string) error {
+	b := c.Body()
+	sum := cryptography.CalculateChecksum(b)
 	ctx := map[string]any{
 		"fromIP":    c.IP(),
 		"timestamp": time.Now().Format("2006-01-02 15:04:05 UTC"),
 		"method":    c.Method(),
+		"sha224":    sum,
 	}
 
 	b, jsonErr := json.Marshal(ctx)