base64.h

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * base64 encoding, lifted from fs/crypto/fname.c.
 4 */
 5
 6#ifndef _LINUX_BASE64_H
 7#define _LINUX_BASE64_H
 8
 9#include <linux/types.h>
10
11enum base64_variant {
12	BASE64_STD,       /* RFC 4648 (standard) */
13	BASE64_URLSAFE,   /* RFC 4648 (base64url) */
14	BASE64_IMAP,      /* RFC 3501 */
15};
16
17#define BASE64_CHARS(nbytes)   DIV_ROUND_UP((nbytes) * 4, 3)
18
19int base64_encode(const u8 *src, int len, char *dst, bool padding, enum base64_variant variant);
20int base64_decode(const char *src, int len, u8 *dst, bool padding, enum base64_variant variant);
21
22#endif /* _LINUX_BASE64_H */