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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/bearssl/src/ssl/ssl_engine_default_aesgcm.c
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/*

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 * Copyright (c) 2017 Thomas Pornin <[email protected]>

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 *

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 * Permission is hereby granted, free of charge, to any person obtaining 

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 * a copy of this software and associated documentation files (the

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 * "Software"), to deal in the Software without restriction, including

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 * without limitation the rights to use, copy, modify, merge, publish,

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 * distribute, sublicense, and/or sell copies of the Software, and to

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 * permit persons to whom the Software is furnished to do so, subject to

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 * the following conditions:

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 *

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 * The above copyright notice and this permission notice shall be 

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 * included in all copies or substantial portions of the Software.

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 *

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 

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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 

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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

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 * SOFTWARE.

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 */

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#include "inner.h"

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/* see bearssl_ssl.h */

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void

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br_ssl_engine_set_default_aes_gcm(br_ssl_engine_context *cc)

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{

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#if BR_AES_X86NI || BR_POWER8

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	const br_block_ctr_class *ictr;

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	br_ghash ighash;

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#endif

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	br_ssl_engine_set_gcm(cc,

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		&br_sslrec_in_gcm_vtable,

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		&br_sslrec_out_gcm_vtable);

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#if BR_AES_X86NI

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	ictr = br_aes_x86ni_ctr_get_vtable();

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	if (ictr != NULL) {

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		br_ssl_engine_set_aes_ctr(cc, ictr);

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	} else {

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#if BR_64

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		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);

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#else

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		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);

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#endif

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	}

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#elif BR_POWER8

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	ictr = br_aes_pwr8_ctr_get_vtable();

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	if (ictr != NULL) {

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		br_ssl_engine_set_aes_ctr(cc, ictr);

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	} else {

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#if BR_64

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		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);

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#else

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		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);

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#endif

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	}

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#else

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#if BR_64

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	br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);

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#else

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	br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);

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#endif

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#endif

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#if BR_AES_X86NI

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	ighash = br_ghash_pclmul_get();

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	if (ighash != 0) {

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		br_ssl_engine_set_ghash(cc, ighash);

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		return;

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	}

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#endif

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#if BR_POWER8

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	ighash = br_ghash_pwr8_get();

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	if (ighash != 0) {

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		br_ssl_engine_set_ghash(cc, ighash);

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		return;

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	}

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#endif

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#if BR_LOMUL

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	br_ssl_engine_set_ghash(cc, &br_ghash_ctmul32);

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#elif BR_64

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	br_ssl_engine_set_ghash(cc, &br_ghash_ctmul64);

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#else

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	br_ssl_engine_set_ghash(cc, &br_ghash_ctmul);

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#endif

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}

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