libkern/crypto/corecrypto_chacha20poly1305.c

   1 /*
   2  * Copyright (c) 2017 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <corecrypto/ccchacha20poly1305.h>
  30 #include <libkern/crypto/crypto_internal.h>
  31 #include <libkern/crypto/chacha20poly1305.h>
  32
  33 static ccchacha20poly1305_fns_t
  34 fns(void)
  35 {
  36         return g_crypto_funcs->ccchacha20poly1305_fns;
  37 }
  38
  39 static const struct ccchacha20poly1305_info *
  40 info(void)
  41 {
  42         return fns()->info();
  43 }
  44
  45 int
  46 chacha20poly1305_init(chacha20poly1305_ctx *ctx, const uint8_t *key)
  47 {
  48         return fns()->init(info(), ctx, key);
  49 }
  50
  51 int
  52 chacha20poly1305_reset(chacha20poly1305_ctx *ctx)
  53 {
  54         return fns()->reset(info(), ctx);
  55 }
  56
  57 int
  58 chacha20poly1305_setnonce(chacha20poly1305_ctx *ctx, const uint8_t *nonce)
  59 {
  60         return fns()->setnonce(info(), ctx, nonce);
  61 }
  62
  63 int
  64 chacha20poly1305_incnonce(chacha20poly1305_ctx *ctx, uint8_t *nonce)
  65 {
  66         return fns()->incnonce(info(), ctx, nonce);
  67 }
  68
  69 int
  70 chacha20poly1305_aad(chacha20poly1305_ctx *ctx, size_t nbytes, const void *aad)
  71 {
  72         return fns()->aad(info(), ctx, nbytes, aad);
  73 }
  74
  75 int
  76 chacha20poly1305_encrypt(chacha20poly1305_ctx *ctx, size_t nbytes, const void *ptext, void *ctext)
  77 {
  78         return fns()->encrypt(info(), ctx, nbytes, ptext, ctext);
  79 }
  80
  81 int
  82 chacha20poly1305_finalize(chacha20poly1305_ctx *ctx, uint8_t *tag)
  83 {
  84         return fns()->finalize(info(), ctx, tag);
  85 }
  86
  87 int
  88 chacha20poly1305_decrypt(chacha20poly1305_ctx *ctx, size_t nbytes, const void *ctext, void *ptext)
  89 {
  90         return fns()->decrypt(info(), ctx, nbytes, ctext, ptext);
  91 }
  92
  93 int
  94 chacha20poly1305_verify(chacha20poly1305_ctx *ctx, const uint8_t *tag)
  95 {
  96         return fns()->verify(info(), ctx, tag);
  97 }