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use serde::Serialize;
// A non-multiple of 4 is important, since one possible bug is to fail to emit
// partial words.
const OUTPUT_LEN: usize = 2 * blake3::BLOCK_LEN + 3;
#[derive(Serialize)]
struct Cases {
_comment: &'static str,
key: &'static str,
cases: Vec<Case>,
}
#[derive(Serialize)]
struct Case {
input_len: usize,
hash: String,
keyed_hash: String,
derive_key: String,
}
fn main() {
let mut cases = Vec::new();
for &input_len in test_vectors::TEST_CASES {
let mut input = vec![0; input_len];
test_vectors::paint_test_input(&mut input);
let mut hash_out = [0; OUTPUT_LEN];
blake3::Hasher::new()
.update(&input)
.finalize_xof(&mut hash_out);
let mut keyed_hash_out = [0; OUTPUT_LEN];
blake3::Hasher::new_keyed(test_vectors::TEST_KEY)
.update(&input)
.finalize_xof(&mut keyed_hash_out);
let mut derive_key_out = [0; OUTPUT_LEN];
blake3::Hasher::new_derive_key(test_vectors::TEST_KEY)
.update(&input)
.finalize_xof(&mut derive_key_out);
cases.push(Case {
input_len,
hash: hex::encode(&hash_out[..]),
keyed_hash: hex::encode(&keyed_hash_out[..]),
derive_key: hex::encode(&derive_key_out[..]),
});
}
let output = serde_json::to_string_pretty(&Cases {
_comment: "Each test is an input length and three outputs, one for each of the hash, keyed_hash, and derive_key modes. The input in each case is filled with a 251-byte-long repeating pattern: 0, 1, 2, ..., 249, 250, 0, 1, ... The key used with keyed_hash and derive_key is the 32-byte ASCII string given below. Outputs are encoded as hexadecimal. Each case is an extended output, and implementations should also check that the first 32 bytes match their default-length output.",
key: std::str::from_utf8(test_vectors::TEST_KEY).unwrap(),
cases,
}).unwrap();
println!("{}", &output);
}
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