Add Android Signer implementation (NIP-55)

Cargo.toml

@@ -19,6 +19,7 @@ members = [
     "rfs/nostr-http-file-storage",
 
     # Signers
+    "signer/nostr-android-signer",
     "signer/nostr-browser-signer",
     "signer/nostr-connect",
 ]
@@ -53,6 +54,7 @@ nostr-ndb = { version = "0.42", path = "./database/nostr-ndb", default-features
 nostr-relay-builder = { version = "0.42", path = "./crates/nostr-relay-builder", default-features = false }
 nostr-relay-pool = { version = "0.42", path = "./crates/nostr-relay-pool", default-features = false }
 nostr-sdk = { version = "0.42", path = "./crates/nostr-sdk", default-features = false }
+once_cell = "1.21"
 reqwest = { version = "0.12", default-features = false }
 serde = { version = "1.0", default-features = false }
 serde_json = { version = "1.0", default-features = false }

README.md

@@ -7,6 +7,7 @@ The project is split up into several crates in the `crates/` directory:
 * Libraries:
     * [**nostr**](./crates/nostr): Rust implementation of Nostr protocol
     * Signers
+        * [**nostr-android-signer**](./signer/nostr-android-signer): Nostr Android signer implementation (NIP-55)
         * [**nostr-browser-signer**](./signer/nostr-browser-signer): Nostr Browser signer implementation (NIP-07)
         * [**nostr-connect**](./signer/nostr-connect): Nostr Connect (NIP-46) 
     * [**nostr-database**](./database/nostr-database): Events database abstraction and in-memory implementation

contrib/scripts/check-crates.sh

@@ -37,6 +37,7 @@ buildargs=(
     "-p nostr --no-default-features --features alloc"             # Only alloc feature
     "-p nostr --no-default-features --features alloc,all-nips"    # alloc + all-nips
     "-p nostr-browser-signer --target wasm32-unknown-unknown"
+    "-p nostr-android-signer"
     "-p nostr-blossom"
     "-p nostr-http-file-storage"
     "-p nostr-database"
@@ -61,6 +62,7 @@ buildargs=(
 )
 
 skip_msrv=(
+    "-p nip55"                            # MSRV: 1.73.0
     "-p nostr-lmdb"                       # MSRV: 1.72.0
     "-p nostr-mls-storage"                # MSRV: 1.74.0
     "-p nostr-mls-memory-storage"         # MSRV: 1.74.0

contrib/scripts/release.sh

@@ -5,6 +5,7 @@ set -euo pipefail
 args=(
     "-p nostr"
     "-p nostr-browser-signer"
+    "-p nostr-android-signer"
     "-p nostr-database"
     "-p nostr-lmdb"
     "-p nostr-mls-storage"

crates/nostr-cli/Cargo.toml

@@ -18,7 +18,7 @@ indicatif = "0.17"
 nostr-connect.workspace = true
 nostr-relay-builder.workspace = true
 nostr-sdk = { workspace = true, features = ["all-nips", "lmdb", "tor"] }
-once_cell = { version = "1.21", default-features = false }
+once_cell.workspace = true
 prettytable-rs = "0.10"
 regex = "1.11.1"
 rustyline = { version = "16.0", default-features = false, features = ["with-file-history"] }

signer/nostr-android-signer/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "nostr-android-signer"
+version = "0.42.0"
+edition = "2021"
+description = "Nostr Android signer implementation (NIP-55)."
+authors.workspace = true
+homepage.workspace = true
+repository.workspace = true
+license.workspace = true
+readme = "README.md"
+rust-version = "1.73.0"
+keywords = ["nostr", "nip55", "android", "signer"]
+
+[dependencies]
+jni = "0.21"
+jvm-getter = "0.1" # MSRV: 1.73.0
+nostr = { workspace = true, features = ["std"] }
+once_cell.workspace = true
+serde = { workspace = true, features = ["derive"] }
+serde_json = { workspace = true, features = ["std"] }
+tracing = { workspace = true, features = ["std"] }

signer/nostr-android-signer/README.md

@@ -0,0 +1,17 @@
+# Android signer (NIP-55)
+
+## Description
+
+Nostr Android signer implementation ([NIP-55](https://github.com/nostr-protocol/nips/blob/master/55.md)).
+
+## State
+
+**This library is in an ALPHA state**, things that are implemented generally work but the API will change in breaking ways.
+
+## Donations
+
+`rust-nostr` is free and open-source. This means we do not earn any revenue by selling it. Instead, we rely on your financial support. If you actively use any of the `rust-nostr` libs/software/services, then please [donate](https://rust-nostr.org/donate).
+
+## License
+
+This project is distributed under the MIT software license - see the [LICENSE](../../LICENSE) file for details