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Set both key generation and ECDSA nonce to use mixed entropy

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* Move random entropy functions to new package randentropy
* Add function to get n bytes entropy where up to first 32
  bytes are mixed with OS entropy sources
This commit is contained in:
Gustav Simonsson
2015-02-04 17:06:06 +01:00
parent e40c1c62ce
commit 8c056aebe1
4 changed files with 92 additions and 18 deletions
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5
crypto/secp256k1/secp256.go
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@ -15,6 +15,7 @@ import "C"
import (
"bytes"
"errors"
"github.com/ethereum/go-ethereum/crypto/randentropy"
"unsafe"
)
@ -68,7 +69,7 @@ func GenerateKeyPair() ([]byte, []byte) {
const seckey_len = 32
var pubkey []byte = make([]byte, pubkey_len)
var seckey []byte = RandByte(seckey_len)
var seckey []byte = randentropy.GetEntropyMixed(seckey_len)
var pubkey_ptr *C.uchar = (*C.uchar)(unsafe.Pointer(&pubkey[0]))
var seckey_ptr *C.uchar = (*C.uchar)(unsafe.Pointer(&seckey[0]))
@ -124,7 +125,7 @@ int secp256k1_ecdsa_sign_compact(const unsigned char *msg, int msglen,
*/
func Sign(msg []byte, seckey []byte) ([]byte, error) {
nonce := RandByte(32)
nonce := randentropy.GetEntropyMixed(32)
var sig []byte = make([]byte, 65)
var recid C.int