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/*
* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* Dispatch functions for AES GCM mode */
#include "prov/ciphercommon.h"
#include "prov/cipher_gcm.h"
static int generic_aes_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
size_t keylen)
{
PROV_AES_GCM_CTX *actx = (PROV_AES_GCM_CTX *)ctx;
AES_KEY *ks = &actx->ks.ks;
# ifdef HWAES_CAPABLE
if (HWAES_CAPABLE) {
# ifdef HWAES_ctr32_encrypt_blocks
GCM_HW_SET_KEY_CTR_FN(ks, HWAES_set_encrypt_key, HWAES_encrypt,
HWAES_ctr32_encrypt_blocks);
# else
GCM_HW_SET_KEY_CTR_FN(ks, HWAES_set_encrypt_key, HWAES_encrypt, NULL);
# endif /* HWAES_ctr32_encrypt_blocks */
} else
# endif /* HWAES_CAPABLE */
# ifdef BSAES_CAPABLE
if (BSAES_CAPABLE) {
GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt,
bsaes_ctr32_encrypt_blocks);
} else
# endif /* BSAES_CAPABLE */
# ifdef VPAES_CAPABLE
if (VPAES_CAPABLE) {
GCM_HW_SET_KEY_CTR_FN(ks, vpaes_set_encrypt_key, vpaes_encrypt, NULL);
} else
# endif /* VPAES_CAPABLE */
{
# ifdef AES_CTR_ASM
GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt,
AES_ctr32_encrypt);
# else
GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt, NULL);
# endif /* AES_CTR_ASM */
}
ctx->key_set = 1;
return 1;
}
static const PROV_GCM_HW aes_gcm = {
generic_aes_gcm_initkey,
gcm_setiv,
gcm_aad_update,
gcm_cipher_update,
gcm_cipher_final,
gcm_one_shot
};
#if defined(S390X_aes_128_CAPABLE)
# include "cipher_aes_gcm_hw_s390x.inc"
#elif defined(AESNI_CAPABLE)
# include "cipher_aes_gcm_hw_aesni.inc"
#elif defined(SPARC_AES_CAPABLE)
# include "cipher_aes_gcm_hw_t4.inc"
#else
const PROV_GCM_HW *PROV_AES_HW_gcm(size_t keybits)
{
return &aes_gcm;
}
#endif
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