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lib/base64: RFC4648-compliant base64 encoding

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Add RFC4648-compliant base64 encoding and decoding routines, based on
the base64url encoding in fs/crypto/fname.c.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Cc: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hannes Reinecke
2022-06-27 11:51:59 +02:00
committed by Jens Axboe
parent 9e2f284e14
commit a116e1cdc6
3 changed files with 120 additions and 1 deletions
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16
include/linux/base64.h Normal file
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// 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>
#define BASE64_CHARS(nbytes) DIV_ROUND_UP((nbytes) * 4, 3)
int base64_encode(const u8 *src, int len, char *dst);
int base64_decode(const char *src, int len, u8 *dst);
#endif /* _LINUX_BASE64_H */