Merge pull request #461 from abhinavxd/add-decryp-cli

Add CLI helper for decrypting crypto payloads

scripts/decrypt-payload/main.go

@@ -0,0 +1,36 @@
+// Run with:
+//
+//	ENCRYPTION_KEY='32-character-key' go run ./scripts/decrypt-payload 'enc:...'
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/abhinavxd/libredesk/internal/crypto"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "usage: ENCRYPTION_KEY=<32-byte-key> go run ./scripts/decrypt-payload <encrypted-payload>")
+		os.Exit(2)
+	}
+
+	key, ok := os.LookupEnv("ENCRYPTION_KEY")
+	if !ok {
+		fmt.Fprintln(os.Stderr, "ENCRYPTION_KEY is required")
+		os.Exit(2)
+	}
+	if len(key) != 32 {
+		fmt.Fprintln(os.Stderr, "ENCRYPTION_KEY must be exactly 32 bytes")
+		os.Exit(2)
+	}
+
+	plaintext, err := crypto.Decrypt(os.Args[1], key)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+
+	fmt.Print(plaintext)
+}