// SPDX-License-Identifier: GPL-2.0/* * base64 encoding, lifted from fs/crypto/fname.c. */ #ifndef _LINUX_BASE64_H#define _LINUX_BASE64_H #include <linux/types.h> enum base64_variant {	BASE64_STD,       /* RFC 4648 (standard) */	BASE64_URLSAFE,   /* RFC 4648 (base64url) */	BASE64_IMAP,      /* RFC 3501 */}; #define BASE64_CHARS(nbytes)   DIV_ROUND_UP((nbytes) * 4, 3) int base64_encode(const u8 *src, int len, char *dst, bool padding, enum base64_variant variant);int base64_decode(const char *src, int len, u8 *dst, bool padding, enum base64_variant variant); #endif /* _LINUX_BASE64_H */