snarkvm_circuit_program/data/plaintext/
to_fields.rs

1// Copyright (c) 2019-2025 Provable Inc.
2// This file is part of the snarkVM library.
3
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at:
7
8// http://www.apache.org/licenses/LICENSE-2.0
9
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15
16use super::*;
17
18impl<A: Aleo> ToFields for Plaintext<A> {
19    type Field = Field<A>;
20
21    /// Returns this plaintext as a list of field elements.
22    fn to_fields(&self) -> Vec<Self::Field> {
23        // Encode the data as little-endian bits.
24        let mut bits_le = self.to_bits_le();
25        // Adds one final bit to the data, to serve as a terminus indicator.
26        // During decryption, this final bit ensures we've reached the end.
27        bits_le.push(Boolean::constant(true));
28        // Pack the bits into field elements.
29        let fields = bits_le.chunks(A::BaseField::size_in_data_bits()).map(Field::from_bits_le).collect::<Vec<_>>();
30        // Ensure the number of field elements does not exceed the maximum allowed size.
31        match fields.len() <= A::MAX_DATA_SIZE_IN_FIELDS as usize {
32            true => fields,
33            false => A::halt("Plaintext exceeds maximum allowed size"),
34        }
35    }
36}
snarkvm_circuit_program/data/plaintext/to_fields.rs

snarkvm_circuit_program/data/plaintext/
to_fields.rs
