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70 lines
1.5 KiB
70 lines
1.5 KiB
package crypto
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/*
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#cgo CFLAGS: -g -m64 -O3 -fPIC -pthread
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#cgo LDFLAGS: -lcrypto
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#include <stdio.h>
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#include "ed25519.h"
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*/
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import "C"
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import "unsafe"
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type Verify struct {
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Message []byte
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PubKey []byte
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Signature []byte
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Valid bool
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}
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func MakePubKey(privKey []byte) []byte {
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pubKey := [32]byte{}
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C.ed25519_publickey(
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(*C.uchar)(unsafe.Pointer(&privKey[0])),
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(*C.uchar)(unsafe.Pointer(&pubKey[0])),
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)
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return pubKey[:]
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}
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func SignMessage(message []byte, privKey []byte, pubKey []byte) []byte {
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sig := [64]byte{}
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C.ed25519_sign(
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(*C.uchar)(unsafe.Pointer(&message[0])), (C.size_t)(len(message)),
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(*C.uchar)(unsafe.Pointer(&privKey[0])),
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(*C.uchar)(unsafe.Pointer(&pubKey[0])),
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(*C.uchar)(unsafe.Pointer(&sig[0])),
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)
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return sig[:]
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}
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func VerifyBatch(verifys []*Verify) bool {
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count := len(verifys)
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msgs := make([]*byte, count)
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lens := make([]C.size_t, count)
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pubs := make([]*byte, count)
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sigs := make([]*byte, count)
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valids := make([]C.int, count)
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for i, v := range verifys {
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msgs[i] = (*byte)(unsafe.Pointer(&v.Message[0]))
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lens[i] = (C.size_t)(len(v.Message))
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pubs[i] = (*byte)(&v.PubKey[0])
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sigs[i] = (*byte)(&v.Signature[0])
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}
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count_ := (C.size_t)(count)
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msgs_ := (**C.uchar)(unsafe.Pointer(&msgs[0]))
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lens_ := (*C.size_t)(unsafe.Pointer(&lens[0]))
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pubs_ := (**C.uchar)(unsafe.Pointer(&pubs[0]))
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sigs_ := (**C.uchar)(unsafe.Pointer(&sigs[0]))
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res := C.ed25519_sign_open_batch(msgs_, lens_, pubs_, sigs_, count_, &valids[0])
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for i, valid := range valids {
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verifys[i].Valid = valid > 0
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}
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return res == 0
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}
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