[Wallet/Mint] DLEQ proofs (#175)

* produce dleq

* start working on verification

* wip dleq

* Use C_ instead of C in verify DLEQ! (#176)

* Fix comments (DLEQ sign error)
* Fix alice_verify_dleq in d_dhke.py
* Fix_generate_promise in ledger.py
* Fix verify_proofs_dleq in wallet.py

* Fix: invalid public key (#182)

* Use C_ instead of C in verify DLEQ!

* Fix comments (DLEQ sign error)
* Fix alice_verify_dleq in d_dhke.py
* Fix_generate_promise in ledger.py
* Fix verify_proofs_dleq in wallet.py

* Fix: invalid public key

* Exception: Mint Error: invalid public key

* Update cashu/wallet/wallet.py

---------

Co-authored-by: calle <93376500+callebtc@users.noreply.github.com>

* Update cashu/core/b_dhke.py

* Update tests/test_cli.py

* verify all constructed proofs

* dleq upon receive

* serialize without dleq

* all tests passing

* make format

* remove print

* remove debug

* option to send with dleq

* add tests

* fix test

* deterministic p in step2_dleq and fix mypy error for hash_to_curve

* test crypto/hash_e and crypto/step2_bob_dleq

* rename A to K in b_dhke.py and test_alice_verify_dleq

* rename tests

* make format

* store dleq in mint db (and readd balance view)

* remove `r` from dleq in tests

* add pending output

* make format

* works with pre-dleq mints

* fix comments

* make format

* fix some tests

* fix last test

* test serialize dleq fix

* flake

* flake

* keyset.id must be str

* fix test decorators

* start removing the duplicate fields from the dleq

* format

* remove print

* cleanup

* add type anotations to dleq functions

* remove unnecessary fields from BlindedSignature

* tests not working yet

* spelling mistakes

* spelling mistakes

* fix more spelling mistakes

* revert to normal

* add comments

* bdhke: generalize hash_e

* remove P2PKSecret changes

* revert tests for P2PKSecret

* revert tests

* revert test fully

* revert p2pksecret changes

* refactor proof invalidation

* store dleq proofs in wallet db

* make mypy happy

---------

Co-authored-by: moonsettler <moonsettler@protonmail.com>

tests/test_cli.py

@@ -3,6 +3,7 @@ import asyncio
 import pytest
 from click.testing import CliRunner
 
+from cashu.core.base import TokenV3
 from cashu.core.settings import settings
 from cashu.wallet.cli.cli import cli
 from cashu.wallet.wallet import Wallet
@@ -123,9 +124,38 @@ def test_send(mint, cli_prefix):
         [*cli_prefix, "send", "10"],
     )
     assert result.exception is None
-    print("SEND")
     print(result.output)
-    assert "cashuA" in result.output, "output does not have a token"
+    token_str = result.output.split("\n")[0]
+    assert "cashuA" in token_str, "output does not have a token"
+    token = TokenV3.deserialize(token_str)
+    assert token.token[0].proofs[0].dleq is None, "dleq included"
+
+
+def test_send_with_dleq(mint, cli_prefix):
+    runner = CliRunner()
+    result = runner.invoke(
+        cli,
+        [*cli_prefix, "send", "10", "--dleq"],
+    )
+    assert result.exception is None
+    print(result.output)
+    token_str = result.output.split("\n")[0]
+    assert "cashuA" in token_str, "output does not have a token"
+    token = TokenV3.deserialize(token_str)
+    assert token.token[0].proofs[0].dleq is not None, "no dleq included"
+
+
+def test_send_legacy(mint, cli_prefix):
+    runner = CliRunner()
+    result = runner.invoke(
+        cli,
+        [*cli_prefix, "send", "10", "--legacy"],
+    )
+    assert result.exception is None
+    print(result.output)
+    # this is the legacy token in the output
+    token_str = result.output.split("\n")[4]
+    assert token_str.startswith("eyJwcm9v"), "output is not as expected"
 
 
 def test_send_without_split(mint, cli_prefix):
@@ -243,3 +273,14 @@ def test_nostr_send(mint, cli_prefix):
     assert result.exception is None
     print("NOSTR_SEND")
     print(result.output)
+
+
+def test_pending(cli_prefix):
+    runner = CliRunner()
+    result = runner.invoke(
+        cli,
+        [*cli_prefix, "pending"],
+    )
+    assert result.exception is None
+    print(result.output)
+    assert result.exit_code == 0