60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
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//
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// SPDX-License-Identifier: Apache-2.0
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// SPDX-License-Identifier: MIT
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// Go library that implements mCaptcha PoW.
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// It is a wrapper over [mcaptcha_pow_sha256](https://crates.io/crates/mcaptcha_pow_sha256).
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package gomcaptcha
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/*
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#cgo LDFLAGS: ./lib/libmcaptcha_pow_ffi.a -ldl
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#include "./mcaptcha-pow-ffi/mcaptcha_pow_ffi.h"
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#include <stdlib.h>
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*/
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import "C"
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// Struct representing Proof-of-Work
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type ProofOfWork struct {
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Nonce uint64
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Result string
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}
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// Compute Proof-of-Work over the challenge parameters presented by mCaptcha.
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// All input data will be supplied by the mCaptcha instance.
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// Outputs Proof-of-Work.
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func ProveWork(salt string, phrase string, difficulty uint) ProofOfWork {
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res := C.prove_work(C.CString(salt),
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C.CString(phrase), C.uint(difficulty))
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return ProofOfWork{
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Nonce: uint64(res.nonce),
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Result: C.GoString(res.result),
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}
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}
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// / Check if Proof-of-Work is of sufficient difficulty. Use same salt and difficulty
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// values used to compute PoW.
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func (v ProofOfWork) IsSufficientDifficulty(salt string, difficulty uint) bool {
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res := C.is_sufficient_difficulty(
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C.ulong(v.Nonce),
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C.CString(v.Result),
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C.CString(salt),
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C.uint(difficulty))
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return bool(res)
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}
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// / Check if Proof-of-Work is valid. Use same challenge phrase and salt values
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// used to compute PoW.
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func (v ProofOfWork) IsValidProof(phrase string, salt string) bool {
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res := C.is_valid_proof(
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C.ulong(v.Nonce),
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C.CString(v.Result),
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C.CString(phrase),
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C.CString(salt))
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return bool(res)
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}
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