lots o progress

crypto.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"fmt"
+	"os"
+)
+
+var cert *x509.Certificate
+var key *rsa.PrivateKey
+
+func encryptBytes(data []byte) []byte {
+	if cert == nil || key == nil {
+		loadCerts()
+	}
+
+	encrypted, err := rsa.EncryptPKCS1v15(rand.Reader, cert.PublicKey.(*rsa.PublicKey), data)
+	if err != nil {
+		fmt.Println("Error encrypting data,", err)
+		os.Exit(1)
+	}
+	return encrypted
+}
+
+func decryptBytes(data []byte) []byte {
+	if cert == nil || key == nil {
+		loadCerts()
+	}
+
+	decrypted, err := rsa.DecryptPKCS1v15(rand.Reader, key, data)
+	if err != nil {
+		fmt.Println("Error decrypting data,", err)
+		os.Exit(1)
+	}
+	return decrypted
+}
+
+func loadCerts() {
+	var err error
+	certBytes, err := os.ReadFile(config.GetAsString("Crypto.cert_path"))
+	keyBytes, err := os.ReadFile(config.GetAsString("Crypto.key_path"))
+	if err != nil {
+		fmt.Println("Error reading cert or key,", err)
+		os.Exit(1)
+	}
+
+	cert, err = x509.ParseCertificate(certBytes)
+	if err != nil {
+		fmt.Println("Error parsing certificate,", err)
+		os.Exit(1)
+	}
+	key, err = x509.ParsePKCS1PrivateKey(keyBytes)
+	if err != nil {
+		fmt.Println("Error parsing private key,", err)
+	}
+}