67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
// hash_grs.go
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package grs
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/*
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#cgo CFLAGS : -I../include
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#cgo LDFLAGS: -L../lib -lx1x
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#include <stdio.h>
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#include <stdlib.h>
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#include "groestlcoin.h"
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*/
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import "C"
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import (
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"bytes"
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//"encoding/hex"
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"log"
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"unsafe"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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)
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// GRS
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func Build_GrsPowHash(h wire.BlockHeader) chainhash.Hash {
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outputs := make([]byte, 32)
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var powhash chainhash.Hash
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buf := bytes.NewBuffer(make([]byte, 0, wire.MaxBlockHeaderPayload))
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err := h.Serialize(buf)
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if err != nil {
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log.Println("[grs] powhash: Serialize error:", err)
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return powhash
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}
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//test_grs_pow := "0000002029c8da051a0f5282d35bbe97ddf4e587cc68175d6bd3c07c620e000000000000335d5efbac0f20cbf4a7c04676857b299b668623df39ac73522e7aa858c63480f8770767907b251ae0b26421"
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//test_grs_bytes, _ := hex.DecodeString(test_grs_pow)
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//log.Println("[grs]in", hex.EncodeToString(buf.Bytes()))
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in := (*C.char)(C.CBytes(buf.Bytes()))
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//in := (*C.char)(C.CBytes(test_grs_bytes))
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defer C.free(unsafe.Pointer(in))
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output := (*C.char)(C.malloc(32))
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if output == nil {
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log.Println("[grs] powhash: malloc failed")
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return powhash
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}
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defer C.free(unsafe.Pointer(output))
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C.GroestlCoinHash(unsafe.Pointer(in), C.int(wire.MaxBlockHeaderPayload), unsafe.Pointer(output))
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//outputs := C.GoBytes((*C.uint8_t)((unsafe.Pointer)(output)), 32)
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/*p := uintptr(unsafe.Pointer(output))
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for i := 0; i < 32; i++ {
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j := *(*byte)(unsafe.Pointer(p))
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outputs[i] = j
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p += unsafe.Sizeof(j)
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}*/
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outputs = C.GoBytes(unsafe.Pointer(output), 32)
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//log.Println("[grs]out", outputs)
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err = powhash.SetBytes(outputs)
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if err != nil {
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log.Println("[grs] powhash: SetBytes error:", err)
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return powhash
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}
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return powhash
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}
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