Skip to content

tests: add NUT-28 HTLC example proof #402

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
robwoodgate wants to merge 2 commits into
base: main
Choose a base branch
from
Open

tests: add NUT-28 HTLC example proof #402

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
90fa294
tests: add NUT-28 HTLC example proof
robwoodgate Jul 14, 2026
372072f
tests: add NUT-28 example V4 token
robwoodgate Jul 14, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
29 changes: 29 additions & 0 deletions tests/28-tests.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,35 @@ The following P2BK proof shows the receiver's public key (P) blinded in the `dat
}
```

### Example P2BK HTLC proof

The following HTLC proof shows the receiver's public key (P) blinded at slot `1` in the `pubkeys` tag, and blinded again at slot `2` in the `refund` tag (for illustration). The `data` tag holds the hash lock, so it occupies slot `0`, but it is **not** blinded, as it is not a key.

The hash lock is the matching pair from the NUT-14 examples (preimage: `0000000000000000000000000000000000000000000000000000000000000001`).

```json
{
"amount": 64,
"C": "0270aba098c920adafa1ce75acefb06d8cc541ef80270f70cc7b66375b789ed9be",
"id": "009a1f293253e41e",
"secret": "[\"HTLC\",{\"nonce\":\"8b1f18aa85a2787903cfdc776fde0b8555bdb126eea02b05cd84de06a4f4b551\",\"data\":\"ec4916dd28fc4c10d78e287ca5d9cc51ee1ae73cbfde08c6b37324cbfaac8bc5\",\"tags\":[[\"pubkeys\",\"0352fb6d93360b7c2538eedf3c861f32ea5883fceec9f3e573d9d84377420da838\"],[\"locktime\",\"1689418329\"],[\"refund\",\"03667361ca925065dcafea0a705ba49e75bdd7975751fcc933e05953463c79fff1\"]]}]",
"dleq": {
"s": "bd6ed079b954151898cadac38c3b8d3371c20d67e8c5f06af3cee4152ac317b4",
"e": "9ec5b6f2095a8dc7d052a00e0bb050ac95e633e702575630cfd43cb58592d2a1",
"r": "e8349cf88e5a9f025f0072bf8a2db48d394bad9f7be3d8023f9ee90de1c1924d"
},
"p2pk_e": "02a8cda4cf448bfce9a9e46e588c06ea1780fcb94e3bbdf3277f42995d403a8b0c"
}
```

### Example V4 token

The two example proofs above, encoded as a V4 token. Note the `pe` field carrying the ephemeral public key (E) as a 33-byte CBOR bstr.

```
cashuBo2FtdWh0dHA6Ly9sb2NhbGhvc3Q6MzMzOGF1Y3NhdGF0gaJhaUgAmh8pMlPkHmFwgqVhYRhAYXN4q1siUDJQSyIseyJub25jZSI6ImQ0YTE3YTg4ZjVkMGMwOTAwMWY3YjQ1M2M0MmMxZjlkNWE4NzM2M2IxZjY2MzdhNWE4M2ZjMzFhNmEzYjcyNjYiLCJkYXRhIjoiMDNiN2MwM2ViMDVhMGE1MzljZmM0MzhlODFiY2YzOGI2NWI3YmI4Njg1ZTg3OTBmOWI4NTNiZmUzZDc3YWQ1MzE1IiwidGFncyI6W119XWFjWCEDgYVd3MQ0qakLNWTynveOcnH4VE0AVnY7QYsA6IUlwP9hZKNhZVggI_IZCxi_0EPTpSYQPhX0qTjWRqa_k7AX4rt8heFUCzJhc1ggYXiXhFbELu6O77UIMPwxRr4nsFYZ8E40kNxZYAXwzHhhclgg0mpVqjnKUJV_2vVANrAQU7DeQgSLlqb7KhZ-A_ANCg9icGVYIQKozaTPRIv86ankbliMBuoXgPy5Tju98yd_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-jF8GrzzuQVKsMXtGFyWCDoNJz4jlqfAl8Acr-KLbSNOUutn3vj2AI_nukN4cGSTWJwZVghAqjNpM9Ei_zpqeRuWIwG6heA_LlOO73zJ39CmV1AOosM
```

### Shared Secret (Zx)

The unique shared secret between sender and receiver is: `x(e·p·G) = x(e·P) = x(p·E)`:
Expand Down
Loading