From 587ac4f7fecc417b4877c5f3c0fdefa58990b3c8 Mon Sep 17 00:00:00 2001
From: Andrew <saintruler@gmail.com>
Date: Fri, 30 Apr 2021 10:28:16 +0400
Subject: Added signer app

---
 playground/main.go | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 playground/main.go

(limited to 'playground/main.go')

diff --git a/playground/main.go b/playground/main.go
new file mode 100644
index 0000000..b8574f0
--- /dev/null
+++ b/playground/main.go
@@ -0,0 +1,87 @@
+package main
+
+import (
+    "fmt"
+    "os"
+)
+
+func runGeneration() {
+    _, privateBytes, publicBytes, err := generateKeys()
+    if err != nil {
+        fmt.Printf("Произошла ошибка при генерации ключей: %s\n", err)
+        os.Exit(1)
+    }
+
+    err = writeFile(os.Args[2], privateBytes)
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+    err = writeFile(os.Args[3], publicBytes)
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+}
+
+func runSign() {
+    keyFile := os.Args[2]
+    messageFile := os.Args[3]
+    resultFile := os.Args[4]
+
+    key, err := loadPublicPEM(keyFile)
+
+    message, err := readFile(messageFile)
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+    signedMessage, err := signData(message, key)
+    if err != nil {
+        fmt.Printf("Произошла ошибка при подписи данных: %s\n", err)
+        os.Exit(1)
+    }
+    err = writeFile(resultFile, []byte(signedMessage))
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+}
+
+func runCheck() {
+    keyFile := os.Args[2]
+    signedFile := os.Args[3]
+
+    key, err := loadPrivatePEM(keyFile)
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+
+    data, err := readFile(signedFile)
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+    result, err := checkSignature(string(data), key)
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        os.Exit(1)
+    }
+
+    if result {
+        fmt.Println("Подпись верна")
+    } else {
+        fmt.Println("Подпись не верна")
+    }
+}
+
+func main() {
+    if os.Args[1] == "generate" {
+        runGeneration()
+    } else if os.Args[1] == "sign" {
+    	runSign()
+    } else if os.Args[1] == "check" {
+        runCheck()
+    }
+}
-- 
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