feature/sha1-sum

pkgs/gnolang/precompile.go

@@ -40,6 +40,7 @@ var stdlibWhitelist = []string{
 	"encoding/base64",
 	"encoding/binary",
 	"encoding/xml",
+	"encoding/hex",
 	"errors",
 	"flag",
 	"fmt",

stdlibs/crypto/sha1/sha1.gno

@@ -0,0 +1,19 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package sha1 implements the SHA-1 hash algorithm as defined in RFC 3174.
+//
+// SHA-1 is cryptographically broken and should not be used for secure
+// applications.
+
+package sha1
+
+import (
+	isha1 "internal/crypto/sha1"
+)
+
+// Sum returns the SHA-1 checksum of the data.
+func Sum(data string) []byte {
+	return isha1.Sum(data)
+}

stdlibs/internal/crypto/sha1/sha1.gno

@@ -0,0 +1 @@
+package sha1

stdlibs/stdlibs.go

@@ -1,6 +1,7 @@
 package stdlibs
 
 import (
+	"crypto/sha1"
 	"math"
 	"reflect"
 	"strconv"
@@ -20,6 +21,20 @@ func InjectNativeMappings(store gno.Store) {
 
 func InjectPackage(store gno.Store, pn *gno.PackageNode) {
 	switch pn.PkgPath {
+	case "internal/crypto/sha1":
+		pn.DefineNative("Sum",
+			gno.Flds(
+				"data", "string",
+			),
+			gno.Flds(
+				"bs", "[]byte",
+			),
+			func(m *gno.Machine) {
+				arg0 := m.LastBlock().GetParams1().TV
+				hash := sha1.Sum([]byte(arg0.GetString()))
+				m.PushValue(typedByteArray(20, m.Alloc.NewArrayFromData(hash[:])))
+			},
+		)
 	case "internal/math":
 		pn.DefineNative("Float32bits",
 			gno.Flds( // params