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