chore: add sign_delete_key_secp256k1 example

Cargo.toml

@@ -47,6 +47,10 @@ path = "examples/sign_transaction/delete_account_long.rs"
 name = "sign_delete_key_ed25519"
 path = "examples/sign_transaction/delete_key_ed25519.rs"
 
+[[example]]
+name = "sign_delete_key_secp256k1"
+path = "examples/sign_transaction/delete_key_secp256k1.rs"
+
 [[example]]
 name = "blind_sign_transaction"
 

README.md

@@ -123,6 +123,12 @@ RUST_LOG=sign_delete_account_long,near_ledger=info cargo run --example sign_dele
 RUST_LOG=sign_delete_key_ed25519,near_ledger=info cargo run --example sign_delete_key_ed25519
 ```
 
+#### Delete key (secp256k1)
+
+```bash
+RUST_LOG=sign_delete_key_secp256k1,near_ledger=info cargo run --example sign_delete_key_secp256k1
+```
+
 #### Transfer
 
 ```bash

examples/sign_transaction/delete_key_secp256k1.rs

@@ -0,0 +1,22 @@
+use near_crypto::SecretKey;
+use near_ledger::NEARLedgerError;
+
+#[path = "../common/lib.rs"]
+mod common;
+
+fn tx(ledger_pub_key: ed25519_dalek::PublicKey) -> near_primitives::transaction::Transaction {
+    let mut tx = common::tx_template(ledger_pub_key.clone());
+    let sk = SecretKey::from_seed(
+        near_crypto::KeyType::SECP256K1,
+        &format!("{:?}", ledger_pub_key),
+    );
+    let public_key = sk.public_key();
+    tx.actions = vec![near_primitives::transaction::Action::DeleteKey(
+        near_primitives::transaction::DeleteKeyAction { public_key },
+    )];
+    tx
+}
+
+fn main() -> Result<(), NEARLedgerError> {
+    common::get_key_sign_and_verify_flow(tx)
+}