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Add CacaoZcapProof2022 #436

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13 changes: 12 additions & 1 deletion Cargo.toml
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ resolver = "2"
exclude = ["json-ld-api/*", "json-ld-normalization/*"]

[features]
default = ["ring"]
default = ["ring", "cacao-zcap"]
http-did = ["http", "percent-encoding"]
libsecp256k1 = ["secp256k1"] # backward compatibility
secp256k1 = ["k256", "rand", "k256/keccak256"]
Expand All @@ -23,6 +23,7 @@ ripemd-160 = ["ripemd160", "secp256k1"]
keccak = ["keccak-hash", "secp256k1", "k256/keccak256"]
sha = ["sha2", "k256/sha256"]
example-http-issuer = []
cacao-zcap = ["libipld", "percent-encoding", "uuid", "cacaos", "sha2"]

[dependencies]
json-ld = "0.4"
Expand Down Expand Up @@ -88,6 +89,11 @@ snarkvm-algorithms = { version= "0.7.9", optional = true }
snarkvm-curves = { version= "0.7.9", optional = true }
snarkvm-utilities = { version = "0.7.9", optional = true }
snarkvm-parameters = { version = "0.7.9", optional = true }
uint = "=0.9.1"
iri-string = { version = "0.4", features = ["serde", "serde-std"] }
libipld = { version = "0.12", optional = true }
uuid = { version = "0.8", features = ["v4", "serde"], optional = true }
cacaos = { version = "0.2", git = "https://github.com/spruceid/cacao-rs.git", rev = "2715184", optional = true }

[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
chrono = { version = "0.4", features = ["serde"] }
Expand Down Expand Up @@ -118,7 +124,12 @@ uuid = { version = "0.8", features = ["v4", "serde"] }
difference = "2.0"
tokio = { version = "1.0", features = ["macros"] }
hyper = { version = "0.14", features = ["server", "http1", "stream"] }
pretty_assertions = "1.2"

[package.metadata.docs.rs]
features = ["secp256r1", "secp256k1", "ripemd-160", "http-did"]
rustdoc-args = ["--cfg", "docsrs"]

[[example]]
name = "cacao-zcap-regenerate-test-vectors"
required-features = ["cacao-zcap"]
77 changes: 77 additions & 0 deletions examples/cacao-zcap-regenerate-test-vectors.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,77 @@
use anyhow::{Context, Result};
use cacaos::siwe::Message;
use cacaos::siwe_cacao::SignInWithEthereum;
use cacaos::BasicSignature;
use cacaos::{Payload, CACAO};
use ssi::cacao_zcap::translation::cacao_to_zcap::cacao_to_zcap;
use ssi::cacao_zcap::CapabilityChainItem;
use std::convert::TryInto;
use std::fs::File;
use std::io::{Read, Write};
use std::path::{Path, PathBuf};
use std::str::FromStr;

fn read_siwe(path: &PathBuf) -> Result<Message> {
let mut file = File::open(path)?;
let mut string = String::new();
file.read_to_string(&mut string)?;
Message::from_str(&string).context("Unable to parse message")
}

fn read_siwe_sig(path: &PathBuf) -> Result<Vec<u8>> {
let mut file = File::open(path)?;
let mut string = String::new();
file.read_to_string(&mut string)?;
let (_base, sig) = multibase::decode(&format!("f{}", &string)).unwrap();
Ok(sig)
}

fn main() {
let crate_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
let siwe0_path = crate_dir.join("tests/cacao_zcap/delegation0.siwe");
let siwe1_path = crate_dir.join("tests/cacao_zcap/delegation1.siwe");
let siwe0_sig_path = crate_dir.join("tests/cacao_zcap/delegation0.siwe.sig");
let siwe1_sig_path = crate_dir.join("tests/cacao_zcap/delegation1.siwe.sig");
let zcap0_path = crate_dir.join("tests/cacao_zcap/delegation0-zcap.jsonld");
let zcap1_path = crate_dir.join("tests/cacao_zcap/delegation1-zcap.jsonld");

let siwe0 = read_siwe(&siwe0_path).unwrap();
let siwe1 = read_siwe(&siwe1_path).unwrap();

// Build zcap0 from siwe0
let payload0 = Payload::from(siwe0);
let sigbytes0 = read_siwe_sig(&siwe0_sig_path).unwrap();
let sig0 = BasicSignature {
s: sigbytes0.try_into().unwrap(),
};
let cacao0 = CACAO::<SignInWithEthereum>::new(payload0, sig0);
let zcap0 = cacao_to_zcap(&cacao0).unwrap();
let zcap0_json = serde_json::to_value(&zcap0).unwrap();
let mut zcap0_out = File::create(zcap0_path).unwrap();
serde_json::to_writer_pretty(&mut zcap0_out, &zcap0_json).unwrap();
write!(zcap0_out, "\n").unwrap();

// Update siwe1 to embed zcap0.
// Update previous delegation in resources array
let parent_capability = CapabilityChainItem::Object(zcap0);
let mut payload1 = Payload::from(siwe1);
payload1.resources.pop();
payload1
.resources
.push(parent_capability.as_resource_uri().unwrap());
let siwe1: Message = payload1.clone().try_into().unwrap();
let mut siwe1_out = File::create(siwe1_path).unwrap();
write!(siwe1_out, "{}", siwe1).unwrap();

// Build zcap1 from siwe1
let sigbytes1 = read_siwe_sig(&siwe1_sig_path).unwrap();
let sig1 = BasicSignature {
s: sigbytes1.try_into().unwrap(),
};
let cacao1 = CACAO::<SignInWithEthereum>::new(payload1, sig1);
let zcap1 = cacao_to_zcap(&cacao1).unwrap();
let zcap1_json = serde_json::to_value(&zcap1).unwrap();
let mut zcap1_out = File::create(zcap1_path).unwrap();
serde_json::to_writer_pretty(&mut zcap1_out, &zcap1_json).unwrap();
write!(zcap1_out, "\n").unwrap();
}
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