/
hmac.go
44 lines (35 loc) · 905 Bytes
/
hmac.go
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package hash
import (
"crypto/hmac"
"encoding/hex"
"fmt"
"github.com/MagicalTux/goro/core"
"github.com/MagicalTux/goro/core/phpv"
)
//> func string hash_hmac ( string $algo , string $data , string $key [, bool $raw_output = FALSE ] )
func fncHashHmac(ctx phpv.Context, args []*phpv.ZVal) (*phpv.ZVal, error) {
var algo phpv.ZString
var data phpv.ZString
var key phpv.ZString
var raw *phpv.ZBool
_, err := core.Expand(ctx, args, &algo, &data, &key, &raw)
if err != nil {
return nil, err
}
algN, ok := algos[algo.ToLower()]
if !ok {
return nil, fmt.Errorf("Unknown hashing algorithm: %s", algo)
}
a := hmac.New(algN, []byte(key))
_, err = a.Write([]byte(data))
if err != nil {
return nil, err
}
r := a.Sum(nil)
if raw != nil && *raw {
// return as raw
return phpv.ZString(r).ZVal(), nil
}
// convert to hex
return phpv.ZString(hex.EncodeToString(r)).ZVal(), nil
}