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ebecf322e5
To enhance test coverage for AES-GCM mode, we provided longer additional testing patterns for AES-GCM testing. Signed-off-by: Phoebe Chen <phoebe.chen@sifive.com> Signed-off-by: Jerry Shih <jerry.shih@sifive.com> Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: Hugo Landau <hlandau@openssl.org> (Merged from https://github.com/openssl/openssl/pull/21923)
119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/*
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* Copyright 2022-2023 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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/*-
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* RISC-V 64 support for AES GCM.
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* This file is included by cipher_aes_gcm_hw.c
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*/
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/*-
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* RISC-V 64 ZKND and ZKNE support for AES GCM.
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*/
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static int rv64i_zknd_zkne_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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GCM_HW_SET_KEY_CTR_FN(ks, rv64i_zkne_set_encrypt_key, rv64i_zkne_encrypt,
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NULL);
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return 1;
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}
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static const PROV_GCM_HW rv64i_zknd_zkne_gcm = {
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rv64i_zknd_zkne_gcm_initkey,
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ossl_gcm_setiv,
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ossl_gcm_aad_update,
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generic_aes_gcm_cipher_update,
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ossl_gcm_cipher_final,
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ossl_gcm_one_shot
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};
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/*-
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* RISC-V RV64 ZVKNED support for AES GCM.
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*/
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static int rv64i_zvkned_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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/*
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* Zvkned only supports 128 and 256 bit keys for key schedule generation.
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* For AES-192 case, we could fallback to `AES_set_encrypt_key`.
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*/
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if (keylen * 8 == 128 || keylen * 8 == 256) {
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GCM_HW_SET_KEY_CTR_FN(ks, rv64i_zvkned_set_encrypt_key,
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rv64i_zvkned_encrypt, NULL);
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} else {
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key,
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rv64i_zvkned_encrypt, NULL);
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}
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return 1;
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}
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static const PROV_GCM_HW rv64i_zvkned_gcm = {
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rv64i_zvkned_gcm_initkey,
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ossl_gcm_setiv,
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ossl_gcm_aad_update,
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generic_aes_gcm_cipher_update,
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ossl_gcm_cipher_final,
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ossl_gcm_one_shot
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};
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/*-
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* RISC-V RV64 ZVKB, ZVKG and ZVKNED support for AES GCM.
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*/
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static int rv64i_zvkb_zvkg_zvkned_gcm_initkey(PROV_GCM_CTX *ctx,
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const unsigned char *key,
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size_t keylen) {
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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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/*
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* Zvkned only supports 128 and 256 bit keys for key schedule generation.
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* For AES-192 case, we could fallback to `AES_set_encrypt_key`.
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*/
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if (keylen * 8 == 128 || keylen * 8 == 256) {
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GCM_HW_SET_KEY_CTR_FN(ks, rv64i_zvkned_set_encrypt_key,
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rv64i_zvkned_encrypt,
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rv64i_zvkb_zvkned_ctr32_encrypt_blocks);
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} else {
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key,
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rv64i_zvkned_encrypt,
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rv64i_zvkb_zvkned_ctr32_encrypt_blocks);
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}
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return 1;
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}
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static const PROV_GCM_HW rv64i_zvkb_zvkg_zvkned_gcm = {
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rv64i_zvkb_zvkg_zvkned_gcm_initkey,
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ossl_gcm_setiv,
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ossl_gcm_aad_update,
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generic_aes_gcm_cipher_update,
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ossl_gcm_cipher_final,
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ossl_gcm_one_shot
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};
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const PROV_GCM_HW *ossl_prov_aes_hw_gcm(size_t keybits) {
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if (RISCV_HAS_ZVKNED()) {
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if (RISCV_HAS_ZVKB() && RISCV_HAS_ZVKG() && riscv_vlen() >= 128) {
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return &rv64i_zvkb_zvkg_zvkned_gcm;
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}
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return &rv64i_zvkned_gcm;
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}
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if (RISCV_HAS_ZKND_AND_ZKNE()) {
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return &rv64i_zknd_zkne_gcm;
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}
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return &aes_gcm;
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}
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