Merge branch 'bounty' into develop

crypto/secp256k1/secp256.go

@@ -124,11 +124,7 @@ int secp256k1_ecdsa_sign_compact(const unsigned char *msg, int msglen,
 */
 
 func Sign(msg []byte, seckey []byte) ([]byte, error) {
-	//var nonce []byte = RandByte(32)
-	nonce := make([]byte, 32)
-	for i := range msg {
-		nonce[i] = msg[i] ^ seckey[i]
-	}
+	nonce := RandByte(32)
 
 	var sig []byte = make([]byte, 65)
 	var recid C.int

crypto/secp256k1/secp256_rand.go

@@ -75,7 +75,7 @@ func RandByte(n int) []byte {
 		return nil
 	}
 
-	buff2 := RandByteWeakCrypto(n)
+	buff2 := saltByte(n)
 	for i := 0; i < n; i++ {
 		buff[i] ^= buff2[2]
 	}