diff --git a/Cargo.lock b/Cargo.lock
index d83c496..95f5f82 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -121,12 +121,6 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "476e9cd489f9e121e02ffa6014a8ef220ecb15c05ed23fc34cca13925dc283fb"
 
-[[package]]
-name = "bumpalo"
-version = "3.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e8c087f005730276d1096a652e92a8bacee2e2472bcc9715a74d2bec38b5820"
-
 [[package]]
 name = "byteorder"
 version = "1.3.4"
@@ -261,9 +255,9 @@ dependencies = [
 
 [[package]]
 name = "dup-crypto"
-version = "0.41.1"
+version = "0.43.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e69f621e9575ed2647fb67a9e8a8d8d5cc8d9281dec2fc848c7619a159501562"
+checksum = "1333e3d4ff5bc8e426cbac23bf3229294e784203ce3d6943a5828c4288a11d8e"
 dependencies = [
  "aes",
  "arrayvec",
@@ -275,7 +269,6 @@ dependencies = [
  "ed25519-bip32",
  "getrandom",
  "once_cell",
- "ring",
  "serde",
  "thiserror",
  "zerocopy",
@@ -334,10 +327,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
 dependencies = [
  "cfg-if 1.0.0",
- "js-sys",
  "libc",
  "wasi",
- "wasm-bindgen",
 ]
 
 [[package]]
@@ -370,21 +361,6 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
-[[package]]
-name = "js-sys"
-version = "0.3.46"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf3d7383929f7c9c7c2d0fa596f325832df98c3704f2c60553080f7127a58175"
-dependencies = [
- "wasm-bindgen",
-]
-
-[[package]]
-name = "lazy_static"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
-
 [[package]]
 name = "libc"
 version = "0.2.81"
@@ -511,21 +487,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "ring"
-version = "0.16.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "024a1e66fea74c66c66624ee5622a7ff0e4b73a13b4f5c326ddb50c708944226"
-dependencies = [
- "cc",
- "libc",
- "once_cell",
- "spin",
- "untrusted",
- "web-sys",
- "winapi",
-]
-
 [[package]]
 name = "ryu"
 version = "1.0.5"
@@ -569,12 +530,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "spin"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
-
 [[package]]
 name = "spinning_top"
 version = "0.2.2"
@@ -695,12 +650,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
 
-[[package]]
-name = "untrusted"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
-
 [[package]]
 name = "vec_map"
 version = "0.8.2"
@@ -719,70 +668,6 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
-[[package]]
-name = "wasm-bindgen"
-version = "0.2.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cd364751395ca0f68cafb17666eee36b63077fb5ecd972bbcd74c90c4bf736e"
-dependencies = [
- "cfg-if 1.0.0",
- "wasm-bindgen-macro",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1114f89ab1f4106e5b55e688b828c0ab0ea593a1ea7c094b141b14cbaaec2d62"
-dependencies = [
- "bumpalo",
- "lazy_static",
- "log",
- "proc-macro2",
- "quote",
- "syn",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-macro"
-version = "0.2.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a6ac8995ead1f084a8dea1e65f194d0973800c7f571f6edd70adf06ecf77084"
-dependencies = [
- "quote",
- "wasm-bindgen-macro-support",
-]
-
-[[package]]
-name = "wasm-bindgen-macro-support"
-version = "0.2.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5a48c72f299d80557c7c62e37e7225369ecc0c963964059509fbafe917c7549"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "wasm-bindgen-backend",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-shared"
-version = "0.2.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e7811dd7f9398f14cc76efd356f98f03aa30419dea46aa810d71e819fc97158"
-
-[[package]]
-name = "web-sys"
-version = "0.3.46"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "222b1ef9334f92a21d3fb53dc3fd80f30836959a90f9274a626d7e06315ba3c3"
-dependencies = [
- "js-sys",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
diff --git a/native/dubp_rs/Cargo.toml b/native/dubp_rs/Cargo.toml
index e51d6d3..d333d57 100644
--- a/native/dubp_rs/Cargo.toml
+++ b/native/dubp_rs/Cargo.toml
@@ -10,7 +10,7 @@ crate-type = ["rlib"]
 
 [dependencies]
 allo-isolate = "0.1.6"
-dup-crypto = { version = "0.41.1", features = ["bip32-ed25519", "dewif", "mnemonic", "mnemonic_french", "rand", "scrypt"] }
+dup-crypto = { version = "0.43.0", features = ["bip32-ed25519", "dewif", "mnemonic", "mnemonic_french", "scrypt"] }
 fast-threadpool = { version = "0.3.0", default-features = false }
 once_cell = { version = "1.3.1", default-features = false, features = ["std"] }
 thiserror = "1.0.23"
diff --git a/native/dubp_rs/src/secret_code.rs b/native/dubp_rs/src/secret_code.rs
index 3666705..2020b37 100644
--- a/native/dubp_rs/src/secret_code.rs
+++ b/native/dubp_rs/src/secret_code.rs
@@ -32,7 +32,11 @@ pub(crate) fn compute_secret_code_len(
         }
         SecretCodeType::Letters => {
             if member_wallet {
-                Ok(10)
+                if log_n >= 15 {
+                    Ok(7)
+                } else {
+                    Ok(8)
+                }
             } else if log_n >= 15 {
                 Ok(5)
             } else {
diff --git a/packages/dubp_rs/lib/dubp.dart b/packages/dubp_rs/lib/dubp.dart
index d5efb5c..d4d4163 100644
--- a/packages/dubp_rs/lib/dubp.dart
+++ b/packages/dubp_rs/lib/dubp.dart
@@ -122,6 +122,7 @@ class DubpRust {
     String salt,
     String password,
     SecretCodeType secretCodeType = SecretCodeType.letters,
+    bool isMember = false,
   }) async {
     int ram = SysInfo.getTotalPhysicalMemory();
     print('ram=$ram');
@@ -134,7 +135,7 @@ class DubpRust {
       Utf8.toUtf8(currency),
       Utf8.toUtf8(salt),
       Utf8.toUtf8(password),
-      0,
+      isMember ? 1 : 0,
       secretCodeType.index,
       ram,
     );