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/linux-5.19.10/fs/ecryptfs/
Dcrypto.c1785 unsigned char *src_block; in ecryptfs_encode_for_filename() local
1789 src_block = last_block; in ecryptfs_encode_for_filename()
1791 src_block = &src[block_num * 3]; in ecryptfs_encode_for_filename()
1792 dst_block[0] = ((src_block[0] >> 2) & 0x3F); in ecryptfs_encode_for_filename()
1793 dst_block[1] = (((src_block[0] << 4) & 0x30) in ecryptfs_encode_for_filename()
1794 | ((src_block[1] >> 4) & 0x0F)); in ecryptfs_encode_for_filename()
1795 dst_block[2] = (((src_block[1] << 2) & 0x3C) in ecryptfs_encode_for_filename()
1796 | ((src_block[2] >> 6) & 0x03)); in ecryptfs_encode_for_filename()
1797 dst_block[3] = (src_block[2] & 0x3F); in ecryptfs_encode_for_filename()