tfhe 1.6.1

TFHE-rs is a fully homomorphic encryption (FHE) library that implements Zama's variant of TFHE.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106

use crate::boolean;
use crate::c_api::buffer::*;
use crate::c_api::utils::*;
use std::os::raw::c_int;

pub struct BooleanCiphertext(pub(in crate::c_api) boolean::ciphertext::Ciphertext);

pub struct BooleanCompressedCiphertext(
    pub(in crate::c_api) boolean::ciphertext::CompressedCiphertext,
);

#[no_mangle]
pub unsafe extern "C" fn boolean_serialize_ciphertext(
    ciphertext: *const BooleanCiphertext,
    result: *mut DynamicBuffer,
) -> c_int {
    catch_panic(|| {
        check_ptr_is_non_null_and_aligned(result).unwrap();

        let ciphertext = get_ref_checked(ciphertext).unwrap();

        let buffer: DynamicBuffer = bincode::serialize(&ciphertext.0).unwrap().into();

        *result = buffer;
    })
}

#[no_mangle]
pub unsafe extern "C" fn boolean_deserialize_ciphertext(
    buffer_view: DynamicBufferView,
    result: *mut *mut BooleanCiphertext,
) -> c_int {
    catch_panic(|| {
        check_ptr_is_non_null_and_aligned(result).unwrap();

        // First fill the result with a null ptr so that if we fail and the return code is not
        // checked, then any access to the result pointer will segfault (mimics malloc on failure)
        *result = std::ptr::null_mut();

        let ciphertext: boolean::ciphertext::Ciphertext =
            bincode::deserialize(buffer_view.as_slice()).unwrap();

        let heap_allocated_ciphertext = Box::new(BooleanCiphertext(ciphertext));

        *result = Box::into_raw(heap_allocated_ciphertext);
    })
}

#[no_mangle]
pub unsafe extern "C" fn boolean_decompress_ciphertext(
    compressed_ciphertext: *mut BooleanCompressedCiphertext,
    result: *mut *mut BooleanCiphertext,
) -> c_int {
    catch_panic(|| {
        check_ptr_is_non_null_and_aligned(result).unwrap();

        // First fill the result with a null ptr so that if we fail and the return code is not
        // checked, then any access to the result pointer will segfault (mimics malloc on failure)
        *result = std::ptr::null_mut();

        let compressed_ciphertext = get_mut_checked(compressed_ciphertext).unwrap();

        let ciphertext = compressed_ciphertext.0.decompress();

        let heap_allocated_ciphertext = Box::new(BooleanCiphertext(ciphertext));

        *result = Box::into_raw(heap_allocated_ciphertext);
    })
}

#[no_mangle]
pub unsafe extern "C" fn boolean_serialize_compressed_ciphertext(
    ciphertext: *const BooleanCompressedCiphertext,
    result: *mut DynamicBuffer,
) -> c_int {
    catch_panic(|| {
        check_ptr_is_non_null_and_aligned(result).unwrap();

        let ciphertext = get_ref_checked(ciphertext).unwrap();

        let buffer: DynamicBuffer = bincode::serialize(&ciphertext.0).unwrap().into();

        *result = buffer;
    })
}

#[no_mangle]
pub unsafe extern "C" fn boolean_deserialize_compressed_ciphertext(
    buffer_view: DynamicBufferView,
    result: *mut *mut BooleanCompressedCiphertext,
) -> c_int {
    catch_panic(|| {
        check_ptr_is_non_null_and_aligned(result).unwrap();

        // First fill the result with a null ptr so that if we fail and the return code is not
        // checked, then any access to the result pointer will segfault (mimics malloc on failure)
        *result = std::ptr::null_mut();

        let ciphertext: boolean::ciphertext::CompressedCiphertext =
            bincode::deserialize(buffer_view.as_slice()).unwrap();

        let heap_allocated_ciphertext = Box::new(BooleanCompressedCiphertext(ciphertext));

        *result = Box::into_raw(heap_allocated_ciphertext);
    })
}