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Diffstat (limited to 'lib/nettle/gost/write-le32.c')
-rw-r--r-- | lib/nettle/gost/write-le32.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/nettle/gost/write-le32.c b/lib/nettle/gost/write-le32.c new file mode 100644 index 0000000..d9d0482 --- /dev/null +++ b/lib/nettle/gost/write-le32.c @@ -0,0 +1,69 @@ +/* write-le32.c + + Copyright (C) 2001, 2011 Niels Möller + + This file is part of GNU Nettle. + + GNU Nettle is free software: you can redistribute it and/or + modify it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + or both in parallel, as here. + + GNU Nettle is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see http://www.gnu.org/licenses/. +*/ + +#if HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdlib.h> + +#include "nettle-write.h" + +#include <nettle/macros.h> + +void +_nettle_write_le32(size_t length, uint8_t *dst, + const uint32_t *src) +{ + size_t i; + size_t words; + unsigned leftover; + + words = length / 4; + leftover = length % 4; + + for (i = 0; i < words; i++, dst += 4) + LE_WRITE_UINT32(dst, src[i]); + + if (leftover) + { + uint32_t word; + + word = src[i]; + + do + { + *dst++ = word & 0xff; + word >>= 8; + } + while (--leftover); + } +} |