pocket-id/backend/internal/utils/hash_util.go

package utils

import (
	"crypto/sha256"
	"encoding/hex"
	"fmt"
	"io"
	"os"
)

func CreateSha256Hash(input string) string {
	hash := sha256.Sum256([]byte(input))
	return hex.EncodeToString(hash[:])
}

func CreateSha256FileHash(filePath string) ([]byte, error) {
	f, err := os.Open(filePath)
	if err != nil {
		return nil, fmt.Errorf("failed to open file: %w", err)
	}
	defer f.Close()

	h := sha256.New()
	_, err = io.Copy(h, f)
	if err != nil {
		return nil, fmt.Errorf("failed to read file: %w", err)
	}

	return h.Sum(nil), nil
}