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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package crypto // import "miniflux.app/v2/internal/crypto"
import (
"crypto/hmac"
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"fmt"
"golang.org/x/crypto/bcrypt"
)
// HashFromBytes returns a SHA-256 checksum of the input.
func HashFromBytes(value []byte) string {
sum := sha256.Sum256(value)
return fmt.Sprintf("%x", sum)
}
// Hash returns a SHA-256 checksum of a string.
func Hash(value string) string {
return HashFromBytes([]byte(value))
}
// GenerateRandomBytes returns random bytes.
func GenerateRandomBytes(size int) []byte {
b := make([]byte, size)
if _, err := rand.Read(b); err != nil {
panic(err)
}
return b
}
// GenerateRandomString returns a random string.
func GenerateRandomString(size int) string {
return base64.URLEncoding.EncodeToString(GenerateRandomBytes(size))
}
// GenerateRandomStringHex returns a random hexadecimal string.
func GenerateRandomStringHex(size int) string {
return hex.EncodeToString(GenerateRandomBytes(size))
}
func HashPassword(password string) (string, error) {
bytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
return string(bytes), err
}
func GenerateSHA256Hmac(secret string, data []byte) string {
h := hmac.New(sha256.New, []byte(secret))
h.Write(data)
return hex.EncodeToString(h.Sum(nil))
}
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