From 8bfaed0e4b938f24c7748ecf0f7672925d9fffa8 Mon Sep 17 00:00:00 2001
From: Anthony De Meulemeester <anthony@academiclabs.co>
Date: Wed, 22 Aug 2018 10:12:57 +0200
Subject: [PATCH] added in the crypto helper api for smart contracts.
 (CityOfZion/neo-storm#15)

Imported from CityOfZion/neo-storm (ad6e9dae46846f97a7da6dd48bf55ad554d612b3).
---
 interop/crypto/crypto.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 interop/crypto/crypto.go

diff --git a/interop/crypto/crypto.go b/interop/crypto/crypto.go
new file mode 100644
index 000000000..b9d71325e
--- /dev/null
+++ b/interop/crypto/crypto.go
@@ -0,0 +1,24 @@
+package crypto
+
+// Package crypto provides function signatures that can be used inside
+// smart contracts that are written in the neo-storm framework.
+
+// SHA1 computes the sha1 hash of b.
+func SHA1(b []byte) []byte {
+	return nil
+}
+
+// SHA256 computes the sha256 hash of b.
+func SHA256(b []byte) []byte {
+	return nil
+}
+
+// Hash160 computes the sha256 + ripemd160 of b.
+func Hash160(b []byte) []byte {
+	return nil
+}
+
+// Hash256 computes the sha256^2 hash of b.
+func Hash256(b []byte) []byte {
+	return nil
+}