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| author | Torfinn Berset <torfinn@bloom-life.com> | 2019-02-21 09:41:19 +0100 |
|---|---|---|
| committer | Torfinn Berset <torfinn@bloom-life.com> | 2019-02-21 09:41:19 +0100 |
| commit | 2fe22ab845bcd581c7f9cf89b28b1e65e37cf055 (patch) | |
| tree | 2a0e4188f2235c1a38f52f36eea02f9ef75247e4 | |
| parent | Const-qualify all read-only pointers (diff) | |
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| -rw-r--r-- | README.md | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -15,8 +15,8 @@ void AES_init_ctx_iv(struct AES_ctx* ctx, const uint8_t* key, const uint8_t* iv) void AES_ctx_set_iv(struct AES_ctx* ctx, const uint8_t* iv); /* Then start encrypting and decrypting with the functions below: */ -void AES_ECB_encrypt(struct AES_ctx* ctx, uint8_t* buf); -void AES_ECB_decrypt(struct AES_ctx* ctx, uint8_t* buf); +void AES_ECB_encrypt(const struct AES_ctx* ctx, uint8_t* buf); +void AES_ECB_decrypt(const struct AES_ctx* ctx, uint8_t* buf); void AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length); void AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length); @@ -47,21 +47,21 @@ GCC size output when only CTR mode is compiled for ARM: $ arm-none-eabi-gcc -Os -DCBC=0 -DECB=0 -DCTR=1 -c aes.c $ size aes.o text data bss dec hex filename - 1203 0 0 1203 4b3 aes.o + 1343 0 0 1343 53f aes.o .. and when compiling for the THUMB instruction set, we end up just below 1K in code size. $ arm-none-eabi-gcc -Os -mthumb -DCBC=0 -DECB=0 -DCTR=1 -c aes.c $ size aes.o text data bss dec hex filename - 955 0 0 955 3bb aes.o + 979 0 0 979 3d3 aes.o I am using the Free Software Foundation, ARM GCC compiler: $ arm-none-eabi-gcc --version - arm-none-eabi-gcc (4.8.4-1+11-1) 4.8.4 20141219 (release) - Copyright (C) 2013 Free Software Foundation, Inc. + arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 8-2018-q4-major) 8.2.1 20181213 (release) + Copyright (C) 2018 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |