From 41d674e8685ab99666f20abd0d1749df6ee58d85 Mon Sep 17 00:00:00 2001
From: Vincent Texier <vit@free.fr>
Date: Sat, 12 Jun 2021 11:27:37 +0200
Subject: [PATCH] [enh] #168 Add example for mnemonic wallet creation

Add mnemonic package as dependency
See https://github.com/trezor/python-mnemonic
---
 examples/create_mnemonic_wallet.py | 54 ++++++++++++++++++++++++++++++
 pyproject.toml                     |  1 +
 2 files changed, 55 insertions(+)
 create mode 100644 examples/create_mnemonic_wallet.py

diff --git a/examples/create_mnemonic_wallet.py b/examples/create_mnemonic_wallet.py
new file mode 100644
index 00000000..adc89870
--- /dev/null
+++ b/examples/create_mnemonic_wallet.py
@@ -0,0 +1,54 @@
+# Copyright  2014-2021 Vincent Texier <vit@free.fr>
+#
+# DuniterPy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# DuniterPy is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+import os
+from pathlib import Path
+
+import mnemonic
+
+from duniterpy.key import SigningKey
+
+################################################
+
+
+def create_mnemonic_wallet():
+
+    # list supported language for mnemonic passphrase
+    print("List of supported languages for passphrase:\n")
+    wordlist_path = Path(mnemonic.__path__[0]).joinpath("wordlist")
+    language_filenames = os.listdir(wordlist_path)
+    index = 0
+    for language_filename in language_filenames:
+        print(f"{index}) {Path(language_filename).stem}")
+        index += 1
+
+    # prompt language index
+    language_index = int(input("\nChoose language index for the mnemonic passphrase: "))
+
+    # get language name from filename
+    language = Path(language_filenames[language_index]).stem
+
+    # generate mnemonic wallet with 128bits strength (12 words)
+    passphrase = mnemonic.Mnemonic(language).generate(strength=128)
+
+    # Create key object
+    key = SigningKey.from_dubp_mnemonic(mnemonic=passphrase)
+
+    # Display wallet passphrase and public key
+    print("Passphrase: %s" % passphrase)
+    print("Public key: %s" % key.pubkey)
+
+
+if __name__ == "__main__":
+    create_mnemonic_wallet()
diff --git a/pyproject.toml b/pyproject.toml
index b23d1001..49a992f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,6 +34,7 @@ libnacl = "^1.7.2"
 pyaes = "^1.6.1"
 graphql-core = "^3.1.2"
 websocket-client = "^0.57"
+mnemonic = "^0.19"
 
 [tool.poetry.dev-dependencies]
 black = {version = "^21.4b2", allow-prereleases = true}
-- 
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