1  // Copyright (c) 2025-2026 ACDC Network
 2  // This file is part of the alphavm library.
 3  //
 4  // Alpha Chain | Delta Chain Protocol
 5  // International Monetary Graphite.
 6  //
 7  // Derived from Aleo (https://aleo.org) and ProvableHQ (https://provable.com).
 8  // They built world-class ZK infrastructure. We installed the EASY button.
 9  // Their cryptography: elegant. Our modifications: bureaucracy-compatible.
10  // Original brilliance: theirs. Robert's Rules: ours. Bugs: definitely ours.
11  //
12  // Original Aleo/ProvableHQ code subject to Apache 2.0 https://www.apache.org/licenses/LICENSE-2.0
13  // All modifications and new work: CC0 1.0 Universal Public Domain Dedication.
14  // No rights reserved. No permission required. No warranty. No refunds.
15  //
16  // https://creativecommons.org/publicdomain/zero/1.0/
17  // SPDX-License-Identifier: CC0-1.0
18  
19  use super::*;
20  
21  impl Serialize for ECDSASignature {
22      /// Serializes the signature into string or bytes.
23      fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
24          match serializer.is_human_readable() {
25              true => serializer.collect_str(self),
26              false => ToBytesSerializer::serialize_with_size_encoding(self, serializer),
27          }
28      }
29  }
30  
31  impl<'de> Deserialize<'de> for ECDSASignature {
32      /// Deserializes the signature from a string or bytes.
33      fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
34          match deserializer.is_human_readable() {
35              true => FromStr::from_str(&String::deserialize(deserializer)?).map_err(de::Error::custom),
36              false => FromBytesDeserializer::<Self>::deserialize_with_size_encoding(deserializer, "ecdsa_signature"),
37          }
38      }
39  }
40  
41  #[cfg(test)]
42  mod tests {
43      use super::*;
44  
45      const ITERATIONS: usize = 1000;
46  
47      #[test]
48      fn test_serde_json() -> Result<()> {
49          let mut rng = TestRng::default();
50          let hasher = test_helpers::DefaultHasher::default();
51  
52          for i in 0..ITERATIONS {
53              // Sample a new signature.
54              let (_, _, expected) = test_helpers::sample_ecdsa_signature(i, &hasher, &mut rng);
55  
56              // Serialize
57              let expected_string = &expected.to_string();
58              let candidate_string = serde_json::to_string(&expected)?;
59              assert_eq!(expected_string, serde_json::Value::from_str(&candidate_string)?.as_str().unwrap());
60  
61              // Deserialize
62              assert_eq!(expected, ECDSASignature::from_str(expected_string)?);
63              assert_eq!(expected, serde_json::from_str(&candidate_string)?);
64          }
65          Ok(())
66      }
67  
68      #[test]
69      fn test_bincode() -> Result<()> {
70          let mut rng = TestRng::default();
71          let hasher = test_helpers::DefaultHasher::default();
72  
73          for i in 0..ITERATIONS {
74              // Sample a new signature.
75              let (_, _, expected) = test_helpers::sample_ecdsa_signature(i, &hasher, &mut rng);
76  
77              // Serialize
78              let expected_bytes = expected.to_bytes_le()?;
79              let expected_bytes_with_size_encoding = bincode::serialize(&expected)?;
80              assert_eq!(&expected_bytes[..], &expected_bytes_with_size_encoding[8..]);
81  
82              // Deserialize
83              assert_eq!(expected, ECDSASignature::read_le(&expected_bytes[..])?);
84              assert_eq!(expected, bincode::deserialize(&expected_bytes_with_size_encoding[..])?);
85          }
86          Ok(())
87      }
88  }