mirror of
https://github.com/mautrix/signal.git
synced 2026-05-15 05:36:53 -04:00
89 lines
2.8 KiB
Go
89 lines
2.8 KiB
Go
// mautrix-signal - A Matrix-signal puppeting bridge.
|
|
// Copyright (C) 2023 Sumner Evans
|
|
// Copyright (C) 2025 Tulir Asokan
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
package libsignalgo
|
|
|
|
/*
|
|
#include "./libsignal-ffi.h"
|
|
*/
|
|
import "C"
|
|
import "runtime"
|
|
|
|
type AES256_GCM_SIV struct {
|
|
nc noCopy
|
|
ptr *C.SignalAes256GcmSiv
|
|
}
|
|
|
|
func wrapAES256_GCM_SIV(ptr *C.SignalAes256GcmSiv) *AES256_GCM_SIV {
|
|
aes := &AES256_GCM_SIV{ptr: ptr}
|
|
runtime.SetFinalizer(aes, (*AES256_GCM_SIV).Destroy)
|
|
return aes
|
|
}
|
|
|
|
func NewAES256_GCM_SIV(key []byte) (*AES256_GCM_SIV, error) {
|
|
var aes C.SignalMutPointerAes256GcmSiv
|
|
signalFfiError := C.signal_aes256_gcm_siv_new(&aes, BytesToBuffer(key))
|
|
if signalFfiError != nil {
|
|
return nil, wrapError(signalFfiError)
|
|
}
|
|
return wrapAES256_GCM_SIV(aes.raw), nil
|
|
}
|
|
|
|
func (aes *AES256_GCM_SIV) mutPtr() C.SignalMutPointerAes256GcmSiv {
|
|
return C.SignalMutPointerAes256GcmSiv{aes.ptr}
|
|
}
|
|
|
|
func (aes *AES256_GCM_SIV) constPtr() C.SignalConstPointerAes256GcmSiv {
|
|
return C.SignalConstPointerAes256GcmSiv{aes.ptr}
|
|
}
|
|
|
|
func (aes *AES256_GCM_SIV) Destroy() error {
|
|
runtime.SetFinalizer(aes, nil)
|
|
return wrapError(C.signal_aes256_gcm_siv_destroy(C.SignalMutPointerAes256GcmSiv{raw: aes.ptr}))
|
|
}
|
|
|
|
func (aes *AES256_GCM_SIV) Encrypt(plaintext, nonce, associatedData []byte) ([]byte, error) {
|
|
var encrypted C.SignalOwnedBuffer = C.SignalOwnedBuffer{}
|
|
|
|
signalFfiError := C.signal_aes256_gcm_siv_encrypt(
|
|
&encrypted,
|
|
C.SignalConstPointerAes256GcmSiv{raw: aes.ptr},
|
|
BytesToBuffer(plaintext),
|
|
BytesToBuffer(nonce),
|
|
BytesToBuffer(associatedData),
|
|
)
|
|
runtime.KeepAlive(aes)
|
|
if signalFfiError != nil {
|
|
return nil, wrapError(signalFfiError)
|
|
}
|
|
return CopySignalOwnedBufferToBytes(encrypted), nil
|
|
}
|
|
|
|
func (aes *AES256_GCM_SIV) Decrypt(ciphertext, nonce, associatedData []byte) ([]byte, error) {
|
|
var decrypted C.SignalOwnedBuffer = C.SignalOwnedBuffer{}
|
|
signalFfiError := C.signal_aes256_gcm_siv_decrypt(
|
|
&decrypted,
|
|
C.SignalConstPointerAes256GcmSiv{raw: aes.ptr},
|
|
BytesToBuffer(ciphertext),
|
|
BytesToBuffer(nonce),
|
|
BytesToBuffer(associatedData),
|
|
)
|
|
if signalFfiError != nil {
|
|
return nil, wrapError(signalFfiError)
|
|
}
|
|
return CopySignalOwnedBufferToBytes(decrypted), nil
|
|
}
|