diff options
Diffstat (limited to 'contrib/pgcrypto/px-hmac.c')
| -rw-r--r-- | contrib/pgcrypto/px-hmac.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/contrib/pgcrypto/px-hmac.c b/contrib/pgcrypto/px-hmac.c deleted file mode 100644 index fd4eb441df1..00000000000 --- a/contrib/pgcrypto/px-hmac.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * px-hmac.c - * HMAC implementation. - * - * Copyright (c) 2001 Marko Kreen - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $Id: px-hmac.c,v 1.4 2001/11/20 18:54:07 momjian Exp $ - */ - - -#include <postgres.h> - -#include "px.h" - -#define HMAC_IPAD 0x36 -#define HMAC_OPAD 0x5C - -static unsigned -hmac_result_size(PX_HMAC * h) -{ - return px_md_result_size(h->md); -} - -static unsigned -hmac_block_size(PX_HMAC * h) -{ - return px_md_block_size(h->md); -} - -static void -hmac_init(PX_HMAC * h, const uint8 *key, unsigned klen) -{ - unsigned bs, - hlen, - i; - uint8 *keybuf; - PX_MD *md = h->md; - - bs = px_md_block_size(md); - hlen = px_md_result_size(md); - keybuf = px_alloc(bs); - memset(keybuf, 0, bs); - - if (klen > bs) - { - px_md_update(md, key, klen); - px_md_finish(md, keybuf); - px_md_reset(md); - } - else - memcpy(keybuf, key, klen); - - for (i = 0; i < bs; i++) - { - h->p.ipad[i] = keybuf[i] ^ HMAC_IPAD; - h->p.opad[i] = keybuf[i] ^ HMAC_OPAD; - } - - memset(keybuf, 0, bs); - px_free(keybuf); - - px_md_update(md, h->p.ipad, bs); -} - -static void -hmac_reset(PX_HMAC * h) -{ - PX_MD *md = h->md; - unsigned bs = px_md_block_size(md); - - px_md_reset(md); - px_md_update(md, h->p.ipad, bs); -} - -static void -hmac_update(PX_HMAC * h, const uint8 *data, unsigned dlen) -{ - px_md_update(h->md, data, dlen); -} - -static void -hmac_finish(PX_HMAC * h, uint8 *dst) -{ - PX_MD *md = h->md; - unsigned bs, - hlen; - uint8 *buf; - - bs = px_md_block_size(md); - hlen = px_md_result_size(md); - - buf = px_alloc(hlen); - - px_md_finish(md, buf); - - px_md_reset(md); - px_md_update(md, h->p.opad, bs); - px_md_update(md, buf, hlen); - px_md_finish(md, dst); - - memset(buf, 0, hlen); - px_free(buf); -} - -static void -hmac_free(PX_HMAC * h) -{ - unsigned bs; - - bs = px_md_block_size(h->md); - px_md_free(h->md); - - memset(h->p.ipad, 0, bs); - memset(h->p.opad, 0, bs); - px_free(h->p.ipad); - px_free(h->p.opad); - px_free(h); -} - - -/* PUBLIC FUNCTIONS */ - -int -px_find_hmac(const char *name, PX_HMAC ** res) -{ - int err; - PX_MD *md; - PX_HMAC *h; - unsigned bs; - - err = px_find_digest(name, &md); - if (err) - return err; - - bs = px_md_block_size(md); - if (bs < 2) - { - px_md_free(md); - return -1; - } - - h = px_alloc(sizeof(*h)); - h->p.ipad = px_alloc(bs); - h->p.opad = px_alloc(bs); - h->md = md; - - h->result_size = hmac_result_size; - h->block_size = hmac_block_size; - h->reset = hmac_reset; - h->update = hmac_update; - h->finish = hmac_finish; - h->free = hmac_free; - h->init = hmac_init; - - *res = h; - - return 0; -} |