bouncer/internal/integration/kubernetes/keyset.go

42 lines
720 B
Go
Raw Permalink Normal View History

package kubernetes
import (
"bytes"
"crypto"
"crypto/sha256"
"fmt"
"slices"
"forge.cadoles.com/cadoles/bouncer/internal/jwk"
"github.com/pkg/errors"
)
func getKeySetThumbprint(set jwk.Set) (string, error) {
data := make([][]byte, 0, set.Len())
for i := 0; i < set.Len(); i++ {
key, exists := set.Key(i)
if !exists {
continue
}
thumbprint, err := key.Thumbprint(crypto.SHA256)
if err != nil {
return "", errors.WithStack(err)
}
data = append(data, thumbprint)
}
slices.SortFunc(data, bytes.Compare)
hash := sha256.New()
for _, d := range data {
if _, err := hash.Write(d); err != nil {
return "", errors.WithStack(err)
}
}
return fmt.Sprintf("%x", hash.Sum(nil)), nil
}