/
sha512.go
91 lines (74 loc) · 1.7 KB
/
sha512.go
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package crypto
import (
"crypto/sha512"
"encoding/binary"
"encoding/hex"
"encoding/json"
"github.com/eosspark/eos-go/crypto/rlp"
. "github.com/eosspark/eos-go/exception/try"
"hash"
"strings"
)
type Sha512 struct {
Hash [8]uint64 `eos:"array"`
}
func NewSha512() hash.Hash {
return sha512.New()
}
func NewSha512Nil() *Sha512 {
data := [8]uint64{0, 0, 0, 0, 0, 0, 0, 0}
return &Sha512{
Hash: data,
}
}
func NewSha512String(s string) *Sha512 {
bytes, err := hex.DecodeString(s)
Throw(err)
result := new(Sha512)
for i := range result.Hash {
result.Hash[i] = binary.LittleEndian.Uint64(bytes[i*8 : (i+1)*8])
}
return result
}
func NewSha512Byte(bytes []byte) *Sha512 {
result := new(Sha512)
for i := range result.Hash {
result.Hash[i] = binary.LittleEndian.Uint64(bytes[i*8 : (i+1)*8])
}
return result
}
func Hash512(t interface{}) *Sha512 {
cereal, err := rlp.EncodeToBytes(t)
Throw(err)
h := sha512.New()
_, _ = h.Write(cereal)
hashed := h.Sum(nil)
result := &Sha512{}
for i := range result.Hash {
result.Hash[i] = binary.LittleEndian.Uint64(hashed[i*8 : (i+1)*8])
}
return result
}
func (h *Sha512) MarshalJSON() ([]byte, error) {
return json.Marshal(hex.EncodeToString(h.Bytes()))
}
func (h *Sha512) String() string {
return hex.EncodeToString(h.Bytes())
}
func (h *Sha512) Bytes() []byte {
result := make([]byte, 64)
for i := range h.Hash {
binary.LittleEndian.PutUint64(result[i*8:(i+1)*8], h.Hash[i])
}
return result
}
func (h *Sha512) Or(h1 Sha512) Sha512 {
result := Sha512{}
for i := range result.Hash {
result.Hash[i] = h.Hash[i] ^ h1.Hash[i]
}
return result
}
func (h *Sha512) Compare(h1 *Sha512) bool {
return strings.Compare(h.String(), h1.String()) == 0
}