···

       
1613
       
1613
       
 
       
dependencies = [

     

       
1614
       
1614
       
 
       
 "base58",

     

       
1615
       
1615
       
 
       
 "hex-literal",

     

       
1616
       
1616
       
+
       
 "k256",

     

       
1616
       
1617
       
 
       
 "postcard",

     

       
1617
       
1618
       
 
       
 "serde",

     

       
1618
       
1619
       
 
       
 "serde_ipld_dagcbor",

     

···

       
10
       
10
       
 
       
stack_size = 65536

     

       
11
       
11
       
 
       


     

       
12
       
12
       
 
       
[dependencies]

     

       
13
       
13
       
+
       
k256 = { version = "0.13.4", default-features = false, features = ["alloc", "ecdsa-core"] }

     

       
13
       
14
       
 
       
postcard = { version = "1.1.1", features = ["alloc"] }

     

       
14
       
15
       
 
       
serde_ipld_dagcbor = { git = "http://github.com/edouardparis/serde_ipld_dagcbor", branch = "scopeguard-no-default-features", default-features = false }

     

       
15
       
16
       
 
       
sdk = { package = "vanadium-app-sdk", git = "https://github.com/LedgerHQ/vanadium"}

     

···

       
168
       
168
       
 
       
    hasher.digest(&mut digest);

     

       
169
       
169
       
 
       


     

       
170
       
170
       
 
       
    let sig = privkey.ecdsa_sign_hash(&digest).unwrap();

     

       
171
       
171
       
-
       


     

       
172
       
172
       
-
       
    Ok(Response::Signature(sig))

     

       
171
       
171
       
+
       
    let sig = k256::ecdsa::Signature::from_der(&sig).unwrap();

     

       
172
       
172
       
+
       
    Ok(Response::Signature(sig.to_bytes().to_vec()))

     

       
173
       
173
       
 
       
}

     

       
174
       
174
       
 
       


     

       
175
       
175
       
 
       
fn process(_app: &mut App, request: &[u8]) -> Vec<u8> {