copy subset of Sprig template functions

util/sprig/crypto.go

@@ -0,0 +1,37 @@
+package sprig
+
+import (
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/hex"
+	"fmt"
+	"hash/adler32"
+
+	"github.com/google/uuid"
+)
+
+func sha512sum(input string) string {
+	hash := sha512.Sum512([]byte(input))
+	return hex.EncodeToString(hash[:])
+}
+
+func sha256sum(input string) string {
+	hash := sha256.Sum256([]byte(input))
+	return hex.EncodeToString(hash[:])
+}
+
+func sha1sum(input string) string {
+	hash := sha1.Sum([]byte(input))
+	return hex.EncodeToString(hash[:])
+}
+
+func adler32sum(input string) string {
+	hash := adler32.Checksum([]byte(input))
+	return fmt.Sprintf("%d", hash)
+}
+
+// uuidv4 provides a safe and secure UUID v4 implementation
+func uuidv4() string {
+	return uuid.New().String()
+}