tpl/crypto: Add FNV32a

Main motivation to get a integer from a string.

1 files changed, 12 insertions, 0 deletions

diff --git a/tpl/crypto/crypto.go b/tpl/crypto/crypto.go
index e6e67e64b..42b420d59 100644
--- a/tpl/crypto/crypto.go
+++ b/tpl/crypto/crypto.go
@@ -23,6 +23,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"hash"
+	"hash/fnv"
 
 	"github.com/spf13/cast"
 )
@@ -68,6 +69,17 @@ func (ns *Namespace) SHA256(in any) (string, error) {
 	return hex.EncodeToString(hash[:]), nil
 }
 
+// FNV32a hashes using fnv32a algorithm
+func (ns *Namespace) FNV32a(in any) (int, error) {
+	conv, err := cast.ToStringE(in)
+	if err != nil {
+		return 0, err
+	}
+	algorithm := fnv.New32a()
+	algorithm.Write([]byte(conv))
+	return int(algorithm.Sum32()), nil
+}
+
 // HMAC returns a cryptographic hash that uses a key to sign a message.
 func (ns *Namespace) HMAC(h any, k any, m any, e ...any) (string, error) {
 	ha, err := cast.ToStringE(h)