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Torfinn Berset
2019-02-21 09:41:19 +01:00
parent 7a35660a00
commit 2fe22ab845
1 changed files with 6 additions and 6 deletions
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README.md
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@@ -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); void AES_ctx_set_iv(struct AES_ctx* ctx, const uint8_t* iv);
/* Then start encrypting and decrypting with the functions below: */ /* Then start encrypting and decrypting with the functions below: */
void AES_ECB_encrypt(struct AES_ctx* ctx, uint8_t* buf); void AES_ECB_encrypt(const struct AES_ctx* ctx, uint8_t* buf);
void AES_ECB_decrypt(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_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); 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 $ arm-none-eabi-gcc -Os -DCBC=0 -DECB=0 -DCTR=1 -c aes.c
$ size aes.o $ size aes.o
text data bss dec hex filename 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. .. 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 $ arm-none-eabi-gcc -Os -mthumb -DCBC=0 -DECB=0 -DCTR=1 -c aes.c
$ size aes.o $ size aes.o
text data bss dec hex filename 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: I am using the Free Software Foundation, ARM GCC compiler:
$ arm-none-eabi-gcc --version $ arm-none-eabi-gcc --version
arm-none-eabi-gcc (4.8.4-1+11-1) 4.8.4 20141219 (release) arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 8-2018-q4-major) 8.2.1 20181213 (release)
Copyright (C) 2013 Free Software Foundation, Inc. Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.