2 files changed, 24 insertions, 0 deletions
diff --git a/internal/cryptoutil/sha1.go b/internal/cryptoutil/sha.go
index 38133960..d829d526 100644
--- a/internal/cryptoutil/sha1.go
+++ b/internal/cryptoutil/sha.go
@@ -6,6 +6,7 @@ package cryptoutil
 
 import (
 	"crypto/sha1"
+	"crypto/sha256"
 	"encoding/hex"
 )
 
@@ -15,3 +16,10 @@ func SHA1(str string) string {
 	_, _ = h.Write([]byte(str))
 	return hex.EncodeToString(h.Sum(nil))
 }
+
+// SHA256 encodes string to hexadecimal of SHA256 checksum.
+func SHA256(str string) string {
+	h := sha256.New()
+	_, _ = h.Write([]byte(str))
+	return hex.EncodeToString(h.Sum(nil))
+}
diff --git a/internal/cryptoutil/sha1_test.go b/internal/cryptoutil/sha_test.go
index c9795c98..a3cbf484 100644
--- a/internal/cryptoutil/sha1_test.go
+++ b/internal/cryptoutil/sha_test.go
@@ -25,3 +25,19 @@ func TestSHA1(t *testing.T) {
 		})
 	}
 }
+
+func TestSHA256(t *testing.T) {
+	tests := []struct {
+		input  string
+		output string
+	}{
+		{input: "", output: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
+		{input: "The quick brown fox jumps over the lazy dog", output: "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592"},
+		{input: "The quick brown fox jumps over the lazy dog.", output: "ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c"},
+	}
+	for _, test := range tests {
+		t.Run(test.input, func(t *testing.T) {
+			assert.Equal(t, test.output, SHA256(test.input))
+		})
+	}
+}