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2022-08-02lib/base64: RFC4648-compliant base64 encodingHannes Reinecke1-0/+103
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>