Implemented all but update from cli client to server;

solidified encryption;
setup deployment mechanism for GCP

crypto/cbc.go

@@ -10,37 +10,6 @@ import (
 	"github.com/cloudflare/redoctober/padding"
 )
 
-func GenerateKeyFromPassword(pass []byte) ([]byte, error) {
-	if len(pass) < 8 {
-		return nil, fmt.Errorf("master password must be at least 8 characters")
-	}
-
-	for idx := 0; len(pass) < 32; idx++ {
-		pass = append(pass, pass[idx])
-
-		if idx == len(pass) {
-			idx = 0
-		}
-	}
-
-	return pass, nil
-}
-
-func CombinePasswordAndKey(pass, key []byte) ([]byte, error) {
-	if len(pass) < 8 {
-		return nil, fmt.Errorf("master password must be at least 8 characters")
-	}
-	if len(key) != 16 {
-		return nil, fmt.Errorf("key was not of length 16")
-	}
-
-	for idx := 0; len(pass) < 16; idx++ {
-		pass = append(pass, pass[idx])
-	}
-
-	return append(pass[:16], key...), nil
-}
-
 func CBCEncrypt(key []byte, plaintext []byte) ([]byte, error) {
 	if len(key) != 32 {
 		return nil, fmt.Errorf("key is not 32 bytes")

crypto/helpers.go

@@ -0,0 +1,68 @@
+package crypto
+
+import (
+	"fmt"
+	"math/rand"
+	"time"
+)
+
+func GenerateKeyFromPassword(pass []byte) ([]byte, error) {
+	if len(pass) < 8 {
+		return nil, fmt.Errorf("master password must be at least 8 characters")
+	}
+
+	for idx := 0; len(pass) < 32; idx++ {
+		pass = append(pass, pass[idx])
+
+		if idx == len(pass) {
+			idx = 0
+		}
+	}
+
+	return pass, nil
+}
+
+func CombinePasswordAndKey(pass, key []byte) ([]byte, error) {
+	if len(pass) < 8 {
+		return nil, fmt.Errorf("master password must be at least 8 characters")
+	}
+	if len(key) != 16 {
+		return nil, fmt.Errorf("key was not of length 16")
+	}
+
+	for idx := 0; len(pass) < 16; idx++ {
+		pass = append(pass, pass[idx])
+	}
+
+	return append(pass[:16], key...), nil
+}
+
+func GeneratePassword(length int, numbers, specials bool) string {
+	const alphas = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	const alphanumerics = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
+	const alphasAndSpecials = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*()"
+	const alphanumericsAndSpecials = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*()"
+	rand.Seed(time.Now().UnixNano())
+	pass := make([]byte, length)
+
+	switch {
+	case numbers && specials:
+		for idx := 0; idx < length; idx++ {
+			pass[idx] = alphanumericsAndSpecials[rand.Int63()%int64(len(alphanumericsAndSpecials))]
+		}
+	case numbers:
+		for idx := 0; idx < length; idx++ {
+			pass[idx] = alphanumerics[rand.Int63()%int64(len(alphanumerics))]
+		}
+	case specials:
+		for idx := 0; idx < length; idx++ {
+			pass[idx] = alphasAndSpecials[rand.Int63()%int64(len(alphasAndSpecials))]
+		}
+	default:
+		for idx := 0; idx < length; idx++ {
+			pass[idx] = alphas[rand.Int63()%int64(len(alphas))]
+		}
+	}
+
+	return string(pass)
+}