工程创建参考：
https://shequ.stmicroelectronics ... p;extra=#pid2657071
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生成代码

. w, O0 s" ~) }0 `- C6 e- d) E1 t+ [定义几个字符串，数组等，模拟文件数据
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    /* USER CODE BEGIN PV */
    char *SourceFile = "STMicroelectronics Community";
5 z; C& N( a  f# d3 }    char EncryptFile[128] = {0};
8 v( f  Z7 s7 f/ I- [    char DecryptFile[128] = {0};
5 k8 [. }3 X  d# S/ j% ?  S$ i  n    /* USER CODE END PV */

( c' w! a% ~6 S+ W8 b  gmain.c中添加程序

5 k3 ^$ F$ \$ g: o' K    /* USER CODE BEGIN BSP */

- s8 u. d4 t8 k7 b% _, B    /* -- Sample board code to send message over COM1 port ---- */
# X: ~3 n7 V4 y1 c& z9 E" O    printf("Welcome to STM32 world !\n\r");
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    /* -- Sample board code to switch on leds ---- */
    BSP_LED_On(LED_GREEN);
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    printf("The source file is: %s !\n\r", SourceFile);
    HAL_CRYP_Encrypt(&hcryp, SourceFile, strlen(SourceFile), EncryptFile, 1000);
    printf("The encrypted file is: %s !\n\r", EncryptFile);
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    HAL_CRYP_Decrypt(&hcryp, EncryptFile, strlen(SourceFile), DecryptFile, 1000);
7 n  m- R$ B, E# w/ K; }4 ]    printf("The Decrypted file is: %s !\n\r", DecryptFile);
    /* USER CODE END BSP */

2 [) N; b/ ^" e8 l编译运行，看效果
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2 G! F* W7 }: N2 e& b; B反正加密后的我是看不懂，哈哈哈哈
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