| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * AMD Cryptographic Coprocessor (CCP) crypto API support |
| * |
| * Copyright (C) 2013,2017 Advanced Micro Devices, Inc. |
| * |
| * Author: Tom Lendacky <thomas.lendacky@amd.com> |
| */ |
| |
| #ifndef __CCP_CRYPTO_H__ |
| #define __CCP_CRYPTO_H__ |
| |
| #include <linux/list.h> |
| #include <linux/wait.h> |
| #include <linux/ccp.h> |
| #include <crypto/algapi.h> |
| #include <crypto/aes.h> |
| #include <crypto/internal/aead.h> |
| #include <crypto/aead.h> |
| #include <crypto/ctr.h> |
| #include <crypto/hash.h> |
| #include <crypto/sha.h> |
| #include <crypto/akcipher.h> |
| #include <crypto/internal/rsa.h> |
| |
| /* We want the module name in front of our messages */ |
| #undef pr_fmt |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #define CCP_LOG_LEVEL KERN_INFO |
| |
| #define CCP_CRA_PRIORITY 300 |
| |
| struct ccp_crypto_ablkcipher_alg { |
| struct list_head entry; |
| |
| u32 mode; |
| |
| struct crypto_alg alg; |
| }; |
| |
| struct ccp_crypto_aead { |
| struct list_head entry; |
| |
| u32 mode; |
| |
| struct aead_alg alg; |
| }; |
| |
| struct ccp_crypto_ahash_alg { |
| struct list_head entry; |
| |
| const __be32 *init; |
| u32 type; |
| u32 mode; |
| |
| /* Child algorithm used for HMAC, CMAC, etc */ |
| char child_alg[CRYPTO_MAX_ALG_NAME]; |
| |
| struct ahash_alg alg; |
| }; |
| |
| struct ccp_crypto_akcipher_alg { |
| struct list_head entry; |
| |
| struct akcipher_alg alg; |
| }; |
| |
| static inline struct ccp_crypto_ablkcipher_alg * |
| ccp_crypto_ablkcipher_alg(struct crypto_tfm *tfm) |
| { |
| struct crypto_alg *alg = tfm->__crt_alg; |
| |
| return container_of(alg, struct ccp_crypto_ablkcipher_alg, alg); |
| } |
| |
| static inline struct ccp_crypto_ahash_alg * |
| ccp_crypto_ahash_alg(struct crypto_tfm *tfm) |
| { |
| struct crypto_alg *alg = tfm->__crt_alg; |
| struct ahash_alg *ahash_alg; |
| |
| ahash_alg = container_of(alg, struct ahash_alg, halg.base); |
| |
| return container_of(ahash_alg, struct ccp_crypto_ahash_alg, alg); |
| } |
| |
| /***** AES related defines *****/ |
| struct ccp_aes_ctx { |
| /* Fallback cipher for XTS with unsupported unit sizes */ |
| struct crypto_sync_skcipher *tfm_skcipher; |
| |
| enum ccp_engine engine; |
| enum ccp_aes_type type; |
| enum ccp_aes_mode mode; |
| |
| struct scatterlist key_sg; |
| unsigned int key_len; |
| u8 key[AES_MAX_KEY_SIZE * 2]; |
| |
| u8 nonce[CTR_RFC3686_NONCE_SIZE]; |
| |
| /* CMAC key structures */ |
| struct scatterlist k1_sg; |
| struct scatterlist k2_sg; |
| unsigned int kn_len; |
| u8 k1[AES_BLOCK_SIZE]; |
| u8 k2[AES_BLOCK_SIZE]; |
| }; |
| |
| struct ccp_aes_req_ctx { |
| struct scatterlist iv_sg; |
| u8 iv[AES_BLOCK_SIZE]; |
| |
| struct scatterlist tag_sg; |
| u8 tag[AES_BLOCK_SIZE]; |
| |
| /* Fields used for RFC3686 requests */ |
| u8 *rfc3686_info; |
| u8 rfc3686_iv[AES_BLOCK_SIZE]; |
| |
| struct ccp_cmd cmd; |
| }; |
| |
| struct ccp_aes_cmac_req_ctx { |
| unsigned int null_msg; |
| unsigned int final; |
| |
| struct scatterlist *src; |
| unsigned int nbytes; |
| |
| u64 hash_cnt; |
| unsigned int hash_rem; |
| |
| struct sg_table data_sg; |
| |
| struct scatterlist iv_sg; |
| u8 iv[AES_BLOCK_SIZE]; |
| |
| struct scatterlist buf_sg; |
| unsigned int buf_count; |
| u8 buf[AES_BLOCK_SIZE]; |
| |
| struct scatterlist pad_sg; |
| unsigned int pad_count; |
| u8 pad[AES_BLOCK_SIZE]; |
| |
| struct ccp_cmd cmd; |
| }; |
| |
| struct ccp_aes_cmac_exp_ctx { |
| unsigned int null_msg; |
| |
| u8 iv[AES_BLOCK_SIZE]; |
| |
| unsigned int buf_count; |
| u8 buf[AES_BLOCK_SIZE]; |
| }; |
| |
| /***** 3DES related defines *****/ |
| struct ccp_des3_ctx { |
| enum ccp_engine engine; |
| enum ccp_des3_type type; |
| enum ccp_des3_mode mode; |
| |
| struct scatterlist key_sg; |
| unsigned int key_len; |
| u8 key[AES_MAX_KEY_SIZE]; |
| }; |
| |
| struct ccp_des3_req_ctx { |
| struct scatterlist iv_sg; |
| u8 iv[AES_BLOCK_SIZE]; |
| |
| struct ccp_cmd cmd; |
| }; |
| |
| /* SHA-related defines |
| * These values must be large enough to accommodate any variant |
| */ |
| #define MAX_SHA_CONTEXT_SIZE SHA512_DIGEST_SIZE |
| #define MAX_SHA_BLOCK_SIZE SHA512_BLOCK_SIZE |
| |
| struct ccp_sha_ctx { |
| struct scatterlist opad_sg; |
| unsigned int opad_count; |
| |
| unsigned int key_len; |
| u8 key[MAX_SHA_BLOCK_SIZE]; |
| u8 ipad[MAX_SHA_BLOCK_SIZE]; |
| u8 opad[MAX_SHA_BLOCK_SIZE]; |
| struct crypto_shash *hmac_tfm; |
| }; |
| |
| struct ccp_sha_req_ctx { |
| enum ccp_sha_type type; |
| |
| u64 msg_bits; |
| |
| unsigned int first; |
| unsigned int final; |
| |
| struct scatterlist *src; |
| unsigned int nbytes; |
| |
| u64 hash_cnt; |
| unsigned int hash_rem; |
| |
| struct sg_table data_sg; |
| |
| struct scatterlist ctx_sg; |
| u8 ctx[MAX_SHA_CONTEXT_SIZE]; |
| |
| struct scatterlist buf_sg; |
| unsigned int buf_count; |
| u8 buf[MAX_SHA_BLOCK_SIZE]; |
| |
| /* CCP driver command */ |
| struct ccp_cmd cmd; |
| }; |
| |
| struct ccp_sha_exp_ctx { |
| enum ccp_sha_type type; |
| |
| u64 msg_bits; |
| |
| unsigned int first; |
| |
| u8 ctx[MAX_SHA_CONTEXT_SIZE]; |
| |
| unsigned int buf_count; |
| u8 buf[MAX_SHA_BLOCK_SIZE]; |
| }; |
| |
| /***** RSA related defines *****/ |
| |
| struct ccp_rsa_ctx { |
| unsigned int key_len; /* in bits */ |
| struct scatterlist e_sg; |
| u8 *e_buf; |
| unsigned int e_len; |
| struct scatterlist n_sg; |
| u8 *n_buf; |
| unsigned int n_len; |
| struct scatterlist d_sg; |
| u8 *d_buf; |
| unsigned int d_len; |
| }; |
| |
| struct ccp_rsa_req_ctx { |
| struct ccp_cmd cmd; |
| }; |
| |
| #define CCP_RSA_MAXMOD (4 * 1024 / 8) |
| #define CCP5_RSA_MAXMOD (16 * 1024 / 8) |
| |
| /***** Common Context Structure *****/ |
| struct ccp_ctx { |
| int (*complete)(struct crypto_async_request *req, int ret); |
| |
| union { |
| struct ccp_aes_ctx aes; |
| struct ccp_rsa_ctx rsa; |
| struct ccp_sha_ctx sha; |
| struct ccp_des3_ctx des3; |
| } u; |
| }; |
| |
| int ccp_crypto_enqueue_request(struct crypto_async_request *req, |
| struct ccp_cmd *cmd); |
| struct scatterlist *ccp_crypto_sg_table_add(struct sg_table *table, |
| struct scatterlist *sg_add); |
| |
| int ccp_register_aes_algs(struct list_head *head); |
| int ccp_register_aes_cmac_algs(struct list_head *head); |
| int ccp_register_aes_xts_algs(struct list_head *head); |
| int ccp_register_aes_aeads(struct list_head *head); |
| int ccp_register_sha_algs(struct list_head *head); |
| int ccp_register_des3_algs(struct list_head *head); |
| int ccp_register_rsa_algs(struct list_head *head); |
| |
| #endif |