snarkvm_circuit_program/data/ciphertext/
equal.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> Equal<Self> for Ciphertext<A> {
19    type Output = Boolean<A>;
20
21    /// Returns `true` if `self` and `other` are equal.
22    fn is_equal(&self, other: &Self) -> Self::Output {
23        // Ensure the ciphertexts have the same number of field elements.
24        if self.0.len() != other.0.len() {
25            return Boolean::constant(false);
26        }
27        // Check each field element for equality.
28        let mut equal = Boolean::constant(true);
29        for (a, b) in self.0.iter().zip_eq(other.0.iter()) {
30            equal &= a.is_equal(b);
31        }
32        equal
33    }
34
35    /// Returns `true` if `self` and `other` are *not* equal.
36    fn is_not_equal(&self, other: &Self) -> Self::Output {
37        // Check if the ciphertexts have different numbers of field elements.
38        if self.0.len() != other.0.len() {
39            return Boolean::constant(true);
40        }
41        // Recursively check each member for inequality.
42        let mut not_equal = Boolean::constant(false);
43        for (a, b) in self.0.iter().zip_eq(other.0.iter()) {
44            not_equal |= a.is_not_equal(b);
45        }
46        not_equal
47    }
48}
snarkvm_circuit_program/data/ciphertext/equal.rs

snarkvm_circuit_program/data/ciphertext/
equal.rs
