From 950e4fb30e9b7153fcae4c9b03c47ca297560a45 Mon Sep 17 00:00:00 2001
From: kalipso <kalipso@c3d2.de>
Date: Thu, 10 Oct 2024 10:33:15 +0200
Subject: [PATCH] delete rsa impl

---
 crypto/rsa/rsa.go | 147 ----------------------------------------------
 1 file changed, 147 deletions(-)
 delete mode 100644 crypto/rsa/rsa.go

diff --git a/crypto/rsa/rsa.go b/crypto/rsa/rsa.go
deleted file mode 100644
index a91c219..0000000
--- a/crypto/rsa/rsa.go
+++ /dev/null
@@ -1,147 +0,0 @@
-package rsa
-
-import (
-	"fmt"
-	"errors"
-	"os"
-	"log"
-
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-)
-
-
-var (
-	privateKeyName = "rsa_private_key.pem"
-	publicKeyName = "rsa_public_key.pem"
-)
-
-func GenerateKeys(path string) (*rsa.PrivateKey, *rsa.PublicKey, error) {
-	// Generate a new RSA key pair
-	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	// Save the private key to a file
-	privateKeyPath := path + privateKeyName
-	privateKeyFile, err := os.Create(privateKeyPath)
-	if err != nil {
-		return nil, nil, err
-	}
-	defer privateKeyFile.Close()
-
-	privateKeyPEM := pem.EncodeToMemory(&pem.Block{
-		Type:  "RSA PRIVATE KEY",
-		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
-	})
-	_, err = privateKeyFile.Write(privateKeyPEM)
-	if err != nil {
-		return nil, nil, err
-	}
-	fmt.Printf("Private key saved to %s\n", privateKeyPath)
-
-	// Extract and save the public key
-	publicKeyPath := path + publicKeyName
-	publicKeyFile, err := os.Create(publicKeyPath)
-	if err != nil {
-		return nil, nil, err
-	}
-	defer publicKeyFile.Close()
-
-	publicKey := &privateKey.PublicKey
-	publicKeyBytes, err := x509.MarshalPKIXPublicKey(publicKey)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	publicKeyPEM := pem.EncodeToMemory(&pem.Block{
-		Type:  "RSA PUBLIC KEY",
-		Bytes: publicKeyBytes,
-	})
-	_, err = publicKeyFile.Write(publicKeyPEM)
-	if err != nil {
-		return nil, nil, err
-	}
-	fmt.Printf("Public key saved to %s\n", publicKeyPath)
-
-	return privateKey, publicKey, nil
-}
-
-func LoadKeys(path string) (*rsa.PrivateKey, *rsa.PublicKey, error) {
-		// Load private key from file
-	privateKeyPath := path + privateKeyName
-	privateKeyData, err := os.ReadFile(privateKeyPath)
-	if err != nil {
-		log.Fatalf("Failed to read private key: %v", err)
-		return nil, nil, err
-	}
-
-	block, _ := pem.Decode(privateKeyData)
-	if block == nil || block.Type != "RSA PRIVATE KEY" {
-		log.Fatalf("Failed to decode PEM block containing private key")
-		return nil, nil, err
-	}
-	privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
-	if err != nil {
-		log.Fatalf("Failed to parse private key: %v", err)
-		return nil, nil, err
-	}
-
-	// Load public key from file
-	publicKeyPath := path + publicKeyName
-	publicKeyData, err := os.ReadFile(publicKeyPath)
-	if err != nil {
-		log.Fatalf("Failed to read public key: %v", err)
-		return nil, nil, err
-	}
-
-	block, _ = pem.Decode(publicKeyData)
-	if block == nil || block.Type != "RSA PUBLIC KEY" {
-		log.Fatalf("Failed to decode PEM block containing public key")
-		return nil, nil, err
-	}
-	publicKeyInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
-	if err != nil {
-		log.Fatalf("Failed to parse public key: %v", err)
-		return nil, nil, err
-	}
-	publicKey := publicKeyInterface.(*rsa.PublicKey)
-
-	return privateKey, publicKey, nil
-}
-
-
-func LoadOrGenerateKeys(path string) (*rsa.PrivateKey, *rsa.PublicKey, error) {
-	_, err := os.Open(path + privateKeyName)
-	if errors.Is(err, os.ErrNotExist) {
-		fmt.Println("Not Exists - Generate Keys")
-		return GenerateKeys(path)
-	}
-
-	return LoadKeys(path)
-}
-
-
-func Encrypt(data []byte, key *rsa.PublicKey) ([]byte, error) {
-	ciphertext, err := rsa.EncryptPKCS1v15(rand.Reader, key, data)
-	if err != nil {
-		log.Fatalf("Failed to encrypt: %v", err)
-		return nil, err
-	}
-
-	return ciphertext, nil
-}
-
-func Decrypt(data []byte, key *rsa.PrivateKey) ([]byte, error) {
-	decrypted, err := rsa.DecryptPKCS1v15(rand.Reader, key, data)
-	if err != nil {
-		log.Fatalf("Failed to decrypt: %v", err)
-		return nil, err
-	}
-
-	return decrypted, nil
-
-}