| 1 | /* GNU Guix --- Functional package management for GNU |
| 2 | Copyright (C) 2012, 2013 Ludovic Courtès <ludo@gnu.org> |
| 3 | |
| 4 | This file is part of GNU Guix. |
| 5 | |
| 6 | GNU Guix is free software; you can redistribute it and/or modify it |
| 7 | under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or (at |
| 9 | your option) any later version. |
| 10 | |
| 11 | GNU Guix is distributed in the hope that it will be useful, but |
| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <config.h> |
| 20 | |
| 21 | #include <gcrypt-hash.hh> |
| 22 | #include <assert.h> |
| 23 | |
| 24 | extern "C" { |
| 25 | |
| 26 | void |
| 27 | guix_hash_init (struct guix_hash_context *ctx, int algo) |
| 28 | { |
| 29 | gcry_error_t err; |
| 30 | |
| 31 | err = gcry_md_open (&ctx->md_handle, algo, 0); |
| 32 | assert (err == GPG_ERR_NO_ERROR); |
| 33 | } |
| 34 | |
| 35 | void |
| 36 | guix_hash_update (struct guix_hash_context *ctx, const void *buffer, size_t len) |
| 37 | { |
| 38 | gcry_md_write (ctx->md_handle, buffer, len); |
| 39 | } |
| 40 | |
| 41 | void |
| 42 | guix_hash_final (void *resbuf, struct guix_hash_context *ctx, |
| 43 | int algo) |
| 44 | { |
| 45 | memcpy (resbuf, gcry_md_read (ctx->md_handle, algo), |
| 46 | gcry_md_get_algo_dlen (algo)); |
| 47 | gcry_md_close (ctx->md_handle); |
| 48 | ctx->md_handle = NULL; |
| 49 | } |
| 50 | |
| 51 | } |