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https://github.com/mautrix/signal.git
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58 lines
1.9 KiB
Go
58 lines
1.9 KiB
Go
// mautrix-signal - A Matrix-signal puppeting bridge.
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// Copyright (C) 2024 Tulir Asokan
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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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#include "./libsignal-ffi.h"
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#include <stdlib.h>
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*/
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import "C"
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import (
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"fmt"
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"runtime"
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"unsafe"
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)
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type ServerPublicParams = C.SignalServerPublicParams
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type NotarySignature [C.SignalSIGNATURE_LEN]byte
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func DeserializeServerPublicParams(params []byte) (*ServerPublicParams, error) {
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if len(params) != C.SignalSERVER_PUBLIC_PARAMS_LEN {
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return nil, fmt.Errorf("invalid server public params length: %d (expected %d)", len(params), int(C.SignalSERVER_PUBLIC_PARAMS_LEN))
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}
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var out C.SignalMutPointerServerPublicParams
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signalFfiError := C.signal_server_public_params_deserialize(&out, BytesToBuffer(params[:]))
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if signalFfiError != nil {
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return nil, wrapError(signalFfiError)
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}
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return out.raw, nil
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}
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func ServerPublicParamsVerifySignature(
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serverPublicParams *ServerPublicParams,
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messageBytes []byte,
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NotarySignature NotarySignature,
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) error {
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c_notarySignature := (*[C.SignalSIGNATURE_LEN]C.uint8_t)(unsafe.Pointer(&NotarySignature[0]))
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signalFfiError := C.signal_server_public_params_verify_signature(
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C.SignalConstPointerServerPublicParams{serverPublicParams},
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BytesToBuffer(messageBytes),
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c_notarySignature,
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)
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runtime.KeepAlive(messageBytes)
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return wrapError(signalFfiError)
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}
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