feat(init): First commit

pkg/crypto/key.go

@@ -0,0 +1,31 @@
+package crypto
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+)
+
+func GenerateKeyPair(bytes int) (string, string, error) {
+	privateKey, err := rsa.GenerateKey(rand.Reader, bytes)
+	if err != nil {
+		return "", "", err
+	}
+
+	err = privateKey.Validate()
+	if err != nil {
+		return "", "", err
+	}
+
+	privBlock := pem.Block{
+		Type:    "PRIVATE KEY",
+		Headers: nil,
+		Bytes:   x509.MarshalPKCS1PrivateKey(privateKey),
+	}
+
+	privateKeyPEM := pem.EncodeToMemory(&privBlock)
+
+	return string(privateKeyPEM), string(base64.StdEncoding.EncodeToString(x509.MarshalPKCS1PublicKey(&privateKey.PublicKey))), nil
+}