mv crypto -> internal/crypto

internal/crypto/crypto.go

@@ -0,0 +1,52 @@
+package crypto
+
+import (
+	"math/rand"
+	"encoding/json"
+
+	"github.com/google/uuid"
+)
+
+const DEFAULT_LENGTH int  = 25
+
+type Password struct {
+	Service string `json:"Service"`
+	Url string `json:"Url"`
+	Username string `json:"Username"`
+	Password string `json:"Password"`
+	Tags []string `json:"Tags"`
+	Id uuid.UUID `json:"Id"`
+}
+
+func (p *Password) ToJson() ([]byte, error) {
+	return json.Marshal(p)
+}
+
+func GetPasswordFromJson(b []byte) (Password, error) {
+	var result Password
+	err := json.Unmarshal(b, &result)
+
+	if err != nil {
+		return Password{}, err
+	}
+
+	return result, nil
+}
+
+func NewPassword(length int) *Password {
+	return &Password{
+		Id: uuid.New(), 
+		Password: GenerateRandomString(length),
+	}
+}
+
+func GenerateRandomString(length int) string {
+	charset := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	b := make([]byte, length)
+	for i := range b {
+		b[i] = charset[rand.Intn(len(charset))]
+	}
+	return string(b)
+}
+
+