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Use Static Data Key for Offline deployment #68

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merged 2 commits into from
May 30, 2024
Merged

Use Static Data Key for Offline deployment #68

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Use Static Data Key for Offline deployment
May 28, 2024
7e895ff
Change to Camel Case
May 28, 2024
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20 changes: 18 additions & 2 deletions crypto/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ import (

"github.com/hashicorp/vault/api"
auth "github.com/hashicorp/vault/api/auth/approle"
"github.com/skit-ai/vcore/env"
)

// Read Env Vars
Expand All @@ -20,12 +21,23 @@ var vault_secret_id string = os.Getenv("VAULT_SECRET_ID")
var vault_approle_mountpath string = os.Getenv("VAULT_APPROLE_MOUNTPATH")
var vault_data_key_name string = os.Getenv("VAULT_DATA_KEY_NAME")
var encrypted_data_key string = os.Getenv("ENCRYPTED_DATA_KEY")
var use_static_data_key bool = env.Bool("USE_STATIC_DATA_KEY", false)
var static_data_key string = env.String("STATIC_DATA_KEY", "")

// Other Global Variables

var data_key []byte
var dataKeyCache map[string][]byte = map[string][]byte{}

func isValidBase64(static_data_key string) bool {
_, err := base64.StdEncoding.DecodeString(static_data_key)
return err == nil
}

func getByteString(static_data_key string) []byte {
return []byte(static_data_key)
}

// Vault functions
func getApproleAuth() *auth.AppRoleAuth {
// Check if vault_approle_mountpath has a value
Expand Down Expand Up @@ -136,9 +148,13 @@ func getDataKey(encrypted_data_key_ string, clientId string) (data_key_ []byte)
// Crypto functions
func newCipherAESGCMObject(data_key_b64_str string, clientId string) (gcm cipher.AEAD, err error) {

var data_key []byte
// Get data key
data_key := getDataKey(data_key_b64_str, clientId)

if use_static_data_key && isValidBase64(static_data_key) {
data_key = getByteString(static_data_key)
} else {
data_key = getDataKey(data_key_b64_str, clientId)
}
// Generate new aes cipher using our 32 byte key
c, err := aes.NewCipher(data_key)
if err != nil {
Expand Down
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