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<N: Network> ToFields for Plaintext<N> {
22      type Field = Field<N>;
23  
24      /// Returns this plaintext as a list of field elements.
25      fn to_fields(&self) -> Result<Vec<Self::Field>> {
26          // Encode the data as little-endian bits.
27          let mut bits_le = self.to_bits_le();
28          // Adds one final bit to the data, to serve as a terminus indicator.
29          // During decryption, this final bit ensures we've reached the end.
30          bits_le.push(true);
31          // Pack the bits into field elements.
32          let fields = bits_le
33              .chunks(Field::<N>::size_in_data_bits())
34              .map(Field::<N>::from_bits_le)
35              .collect::<Result<Vec<_>>>()?;
36          // Ensure the number of field elements does not exceed the maximum allowed size.
37          match fields.len() <= N::MAX_DATA_SIZE_IN_FIELDS as usize {
38              true => Ok(fields),
39              false => bail!("Plaintext exceeds maximum allowed size"),
40          }
41      }
42  }