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targets/TARGET_NUVOTON/TARGET_M480/crypto/crypto-misc.h@181:96ed750bd169, 2018-01-17 (annotated)

Committer:
Anna Bridge
Date:
Wed Jan 17 15:23:54 2018 +0000
Revision:
181:96ed750bd169
Child:
183:a56a73fd2a6f
mbed-dev libray. Release version 158

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UserRevisionLine numberNew contents of line
Anna Bridge 181:96ed750bd169 1 /* mbed Microcontroller Library
Anna Bridge 181:96ed750bd169 2 * Copyright (c) 2015-2016 Nuvoton
Anna Bridge 181:96ed750bd169 3 *
Anna Bridge 181:96ed750bd169 4 * Licensed under the Apache License, Version 2.0 (the "License");
Anna Bridge 181:96ed750bd169 5 * you may not use this file except in compliance with the License.
Anna Bridge 181:96ed750bd169 6 * You may obtain a copy of the License at
Anna Bridge 181:96ed750bd169 7 *
Anna Bridge 181:96ed750bd169 8 * http://www.apache.org/licenses/LICENSE-2.0
Anna Bridge 181:96ed750bd169 9 *
Anna Bridge 181:96ed750bd169 10 * Unless required by applicable law or agreed to in writing, software
Anna Bridge 181:96ed750bd169 11 * distributed under the License is distributed on an "AS IS" BASIS,
Anna Bridge 181:96ed750bd169 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Anna Bridge 181:96ed750bd169 13 * See the License for the specific language governing permissions and
Anna Bridge 181:96ed750bd169 14 * limitations under the License.
Anna Bridge 181:96ed750bd169 15 */
Anna Bridge 181:96ed750bd169 16
Anna Bridge 181:96ed750bd169 17 #ifndef MBED_CRYPTO_MISC_H
Anna Bridge 181:96ed750bd169 18 #define MBED_CRYPTO_MISC_H
Anna Bridge 181:96ed750bd169 19
Anna Bridge 181:96ed750bd169 20 #include <stdbool.h>
Anna Bridge 181:96ed750bd169 21
Anna Bridge 181:96ed750bd169 22 #ifdef __cplusplus
Anna Bridge 181:96ed750bd169 23 extern "C" {
Anna Bridge 181:96ed750bd169 24 #endif
Anna Bridge 181:96ed750bd169 25
Anna Bridge 181:96ed750bd169 26 /* Init/Uninit crypto module */
Anna Bridge 181:96ed750bd169 27 void crypto_init(void);
Anna Bridge 181:96ed750bd169 28 void crypto_uninit(void);
Anna Bridge 181:96ed750bd169 29
Anna Bridge 181:96ed750bd169 30 /* Clear buffer to zero
Anna Bridge 181:96ed750bd169 31 * Implementation that should never be optimized out by the compiler */
Anna Bridge 181:96ed750bd169 32 void crypto_zeroize(void *v, size_t n);
Anna Bridge 181:96ed750bd169 33
Anna Bridge 181:96ed750bd169 34 /* Acquire/release ownership of AES H/W */
Anna Bridge 181:96ed750bd169 35 /* NOTE: If "acquire" succeeds, "release" must be done to pair it. */
Anna Bridge 181:96ed750bd169 36 bool crypto_aes_acquire(void);
Anna Bridge 181:96ed750bd169 37 void crypto_aes_release(void);
Anna Bridge 181:96ed750bd169 38
Anna Bridge 181:96ed750bd169 39 /* Acquire/release ownership of DES H/W */
Anna Bridge 181:96ed750bd169 40 /* NOTE: If "acquire" succeeds, "release" must be done to pair it. */
Anna Bridge 181:96ed750bd169 41 bool crypto_des_acquire(void);
Anna Bridge 181:96ed750bd169 42 void crypto_des_release(void);
Anna Bridge 181:96ed750bd169 43
Anna Bridge 181:96ed750bd169 44 /* Acquire/release ownership of SHA H/W */
Anna Bridge 181:96ed750bd169 45 /* NOTE: If "acquire" succeeds, "release" must be done to pair it. */
Anna Bridge 181:96ed750bd169 46 bool crypto_sha_acquire(void);
Anna Bridge 181:96ed750bd169 47 void crypto_sha_release(void);
Anna Bridge 181:96ed750bd169 48
Anna Bridge 181:96ed750bd169 49 /* Flow control between crypto/xxx start and crypto/xxx ISR
Anna Bridge 181:96ed750bd169 50 *
Anna Bridge 181:96ed750bd169 51 * crypto_xxx_prestart/crypto_xxx_wait encapsulate control flow between crypto/xxx start and crypto/xxx ISR.
Anna Bridge 181:96ed750bd169 52 *
Anna Bridge 181:96ed750bd169 53 * crypto_xxx_prestart will also address synchronization issue with memory barrier instruction.
Anna Bridge 181:96ed750bd169 54 *
Anna Bridge 181:96ed750bd169 55 * On finish, return of crypto_xxx_wait indicates success or not:
Anna Bridge 181:96ed750bd169 56 * true if successful
Anna Bridge 181:96ed750bd169 57 * false if failed
Anna Bridge 181:96ed750bd169 58 *
Anna Bridge 181:96ed750bd169 59 * Example: Start AES H/W and wait for its finish
Anna Bridge 181:96ed750bd169 60 * crypto_aes_prestart();
Anna Bridge 181:96ed750bd169 61 * AES_Start();
Anna Bridge 181:96ed750bd169 62 * crypto_aes_wait();
Anna Bridge 181:96ed750bd169 63 */
Anna Bridge 181:96ed750bd169 64 void crypto_prng_prestart(void);
Anna Bridge 181:96ed750bd169 65 bool crypto_prng_wait(void);
Anna Bridge 181:96ed750bd169 66 void crypto_aes_prestart(void);
Anna Bridge 181:96ed750bd169 67 bool crypto_aes_wait(void);
Anna Bridge 181:96ed750bd169 68 void crypto_des_prestart(void);
Anna Bridge 181:96ed750bd169 69 bool crypto_des_wait(void);
Anna Bridge 181:96ed750bd169 70
Anna Bridge 181:96ed750bd169 71
Anna Bridge 181:96ed750bd169 72 /* Check if buffer can be used for crypto DMA. It has the following requirements:
Anna Bridge 181:96ed750bd169 73 * (1) Word-aligned buffer base address
Anna Bridge 181:96ed750bd169 74 * (2) Crypto submodule (AES, DES, SHA, etc.) dependent buffer size alignment. Must be 2 power.
Anna Bridge 181:96ed750bd169 75 * (3) Located in 0x20000000-0x2FFFFFFF region
Anna Bridge 181:96ed750bd169 76 */
Anna Bridge 181:96ed750bd169 77 bool crypto_dma_buff_compat(const void *buff, size_t buff_size, size_t size_aligned_to);
Anna Bridge 181:96ed750bd169 78
Anna Bridge 181:96ed750bd169 79 /* Check if input/output buffers are overlapped */
Anna Bridge 181:96ed750bd169 80 bool crypto_dma_buffs_overlap(const void *in_buff, size_t in_buff_size, const void *out_buff, size_t out_buff_size);
Anna Bridge 181:96ed750bd169 81
Anna Bridge 181:96ed750bd169 82 #ifdef __cplusplus
Anna Bridge 181:96ed750bd169 83 }
Anna Bridge 181:96ed750bd169 84 #endif
Anna Bridge 181:96ed750bd169 85
Anna Bridge 181:96ed750bd169 86 #endif