/* * Copyright (C) 2012-2017 ARM Limited or its affiliates. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ /* \file ssi_aead.h ARM CryptoCell AEAD Crypto API */ #ifndef __SSI_AEAD_H__ #define __SSI_AEAD_H__ #include <linux/kernel.h> #include <crypto/algapi.h> #include <crypto/ctr.h> /* mac_cmp - HW writes 8 B but all bytes hold the same value */ #define ICV_CMP_SIZE 8 #define CCM_CONFIG_BUF_SIZE (AES_BLOCK_SIZE*3) #define MAX_MAC_SIZE MAX(SHA256_DIGEST_SIZE, AES_BLOCK_SIZE) /* defines for AES GCM configuration buffer */ #define GCM_BLOCK_LEN_SIZE 8 #define GCM_BLOCK_RFC4_IV_OFFSET 4 #define GCM_BLOCK_RFC4_IV_SIZE 8 /* IV size for rfc's */ #define GCM_BLOCK_RFC4_NONCE_OFFSET 0 #define GCM_BLOCK_RFC4_NONCE_SIZE 4 /* Offsets into AES CCM configuration buffer */ #define CCM_B0_OFFSET 0 #define CCM_A0_OFFSET 16 #define CCM_CTR_COUNT_0_OFFSET 32 /* CCM B0 and CTR_COUNT constants. */ #define CCM_BLOCK_NONCE_OFFSET 1 /* Nonce offset inside B0 and CTR_COUNT */ #define CCM_BLOCK_NONCE_SIZE 3 /* Nonce size inside B0 and CTR_COUNT */ #define CCM_BLOCK_IV_OFFSET 4 /* IV offset inside B0 and CTR_COUNT */ #define CCM_BLOCK_IV_SIZE 8 /* IV size inside B0 and CTR_COUNT */ enum aead_ccm_header_size { ccm_header_size_null = -1, ccm_header_size_zero = 0, ccm_header_size_2 = 2, ccm_header_size_6 = 6, ccm_header_size_max = INT32_MAX }; struct aead_req_ctx { /* Allocate cache line although only 4 bytes are needed to * assure next field falls @ cache line * Used for both: digest HW compare and CCM/GCM MAC value */ uint8_t mac_buf[MAX_MAC_SIZE] ____cacheline_aligned; uint8_t ctr_iv[AES_BLOCK_SIZE] ____cacheline_aligned; //used in gcm uint8_t gcm_iv_inc1[AES_BLOCK_SIZE] ____cacheline_aligned; uint8_t gcm_iv_inc2[AES_BLOCK_SIZE] ____cacheline_aligned; uint8_t hkey[AES_BLOCK_SIZE] ____cacheline_aligned; struct { uint8_t lenA[GCM_BLOCK_LEN_SIZE] ____cacheline_aligned; uint8_t lenC[GCM_BLOCK_LEN_SIZE] ; } gcm_len_block; uint8_t ccm_config[CCM_CONFIG_BUF_SIZE] ____cacheline_aligned; unsigned int hw_iv_size ____cacheline_aligned; /*HW actual size input*/ uint8_t backup_mac[MAX_MAC_SIZE]; /*used to prevent cache coherence problem*/ uint8_t *backup_iv; /*store iv for generated IV flow*/ uint8_t *backup_giv; /*store iv for rfc3686(ctr) flow*/ dma_addr_t mac_buf_dma_addr; /* internal ICV DMA buffer */ dma_addr_t ccm_iv0_dma_addr; /* buffer for internal ccm configurations */ dma_addr_t icv_dma_addr; /* Phys. address of ICV */ //used in gcm dma_addr_t gcm_iv_inc1_dma_addr; /* buffer for internal gcm configurations */ dma_addr_t gcm_iv_inc2_dma_addr; /* buffer for internal gcm configurations */ dma_addr_t hkey_dma_addr; /* Phys. address of hkey */ dma_addr_t gcm_block_len_dma_addr; /* Phys. address of gcm block len */ bool is_gcm4543; uint8_t *icv_virt_addr; /* Virt. address of ICV */ struct async_gen_req_ctx gen_ctx; struct ssi_mlli assoc; struct ssi_mlli src; struct ssi_mlli dst; struct scatterlist* srcSgl; struct scatterlist* dstSgl; unsigned int srcOffset; unsigned int dstOffset; enum ssi_req_dma_buf_type assoc_buff_type; enum ssi_req_dma_buf_type data_buff_type; struct mlli_params mlli_params; unsigned int cryptlen; struct scatterlist ccm_adata_sg; enum aead_ccm_header_size ccm_hdr_size; unsigned int req_authsize; enum drv_cipher_mode cipher_mode; bool is_icv_fragmented; bool is_single_pass; bool plaintext_authenticate_only; //for gcm_rfc4543 }; int ssi_aead_alloc(struct ssi_drvdata *drvdata); int ssi_aead_free(struct ssi_drvdata *drvdata); #endif /*__SSI_AEAD_H__*/Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Gilad Ben-Yossef | 335 | 100.00% | 1 | 100.00% |
| Total | 335 | 100.00% | 1 | 100.00% |