2019-08-26 15:05:08 +08:00
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/*
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* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Dispatch functions for AES GCM mode */
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2019-12-11 20:43:24 +08:00
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#include "cipher_aes_gcm.h"
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2019-08-26 15:05:08 +08:00
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static int generic_aes_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
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size_t keylen)
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{
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PROV_AES_GCM_CTX *actx = (PROV_AES_GCM_CTX *)ctx;
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AES_KEY *ks = &actx->ks.ks;
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# ifdef HWAES_CAPABLE
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if (HWAES_CAPABLE) {
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# ifdef HWAES_ctr32_encrypt_blocks
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GCM_HW_SET_KEY_CTR_FN(ks, HWAES_set_encrypt_key, HWAES_encrypt,
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HWAES_ctr32_encrypt_blocks);
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# else
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GCM_HW_SET_KEY_CTR_FN(ks, HWAES_set_encrypt_key, HWAES_encrypt, NULL);
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# endif /* HWAES_ctr32_encrypt_blocks */
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} else
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# endif /* HWAES_CAPABLE */
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# ifdef BSAES_CAPABLE
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if (BSAES_CAPABLE) {
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt,
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bsaes_ctr32_encrypt_blocks);
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} else
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# endif /* BSAES_CAPABLE */
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# ifdef VPAES_CAPABLE
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if (VPAES_CAPABLE) {
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GCM_HW_SET_KEY_CTR_FN(ks, vpaes_set_encrypt_key, vpaes_encrypt, NULL);
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} else
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# endif /* VPAES_CAPABLE */
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{
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# ifdef AES_CTR_ASM
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt,
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AES_ctr32_encrypt);
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# else
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt, NULL);
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# endif /* AES_CTR_ASM */
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}
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ctx->key_set = 1;
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return 1;
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}
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static const PROV_GCM_HW aes_gcm = {
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generic_aes_gcm_initkey,
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gcm_setiv,
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gcm_aad_update,
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gcm_cipher_update,
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gcm_cipher_final,
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gcm_one_shot
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};
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#if defined(S390X_aes_128_CAPABLE)
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# include "cipher_aes_gcm_hw_s390x.inc"
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#elif defined(AESNI_CAPABLE)
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# include "cipher_aes_gcm_hw_aesni.inc"
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#elif defined(SPARC_AES_CAPABLE)
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# include "cipher_aes_gcm_hw_t4.inc"
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#else
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const PROV_GCM_HW *PROV_AES_HW_gcm(size_t keybits)
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{
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return &aes_gcm;
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}
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#endif
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