dhuertas/aes

AES algorithm implementation in C

aes's Issues

关于gmult.c

你好，多谢你的代码，很久之前就在用你的AES源码，刚刚看到gmult.c这个文件，我不清楚是来干嘛的，我是小白，请问这个有什么作用，以前我记得是没有的，谢谢。

About the transposition of the input?

Hi,
I notice that a transposition is applied to the input in this code. Just as follows,

for (i = 0; i < 4; i++) {
    for (j = 0; j < Nb; j++) {
        state[Nb*i+j] = in[i+4*j];
    }
}

I think this is used because the state of AES is column-major, as shown below. It is different with the array in C. But I do not think it is useful. Actually, this piece of code may cause some misunderstanding.

// state of AES
s0 s4 s8  s12
s1 s5 s9  s13
s2 s6 s10 s14
s3 s7 s11 s15

licence?

Hi there

What is the licence of this project? MIT? GPL? LGPL? BSD?

Niek

MODE OF AES

I WAS LOOKING FOR A CODE TO PERFORM AES ENCRYPTION IN C. I CAME ACROSS A DOCUMENT STATING THAT THERE ARE DIFFERENT MODES OF AES (for eg:CBC,ECB). PLEASE TELL ME WHICH MODE OF AES IS BEING IMPLEMENTED THROUGH THIS CODE? IF I RUN THIS CODE IN A MICROCONTROLLER FOR MY PROJECT, WHICH RUNS AT 168Mhz CLOCK, HOW MUCH TIME WILL THE AES ENCRYPTION PART ALONE WILL TAKE TO COMPLETE THE PROCESS. LOOKING FORWARD FOR YOUR REPLY.
THANKS & REGARDS

main two implementation

hello! i have a question, why you have two implementation of main function in aes.c and main.c? in codeblock throw an error

T

fine job

openssl cmdline tool compatible

Hi.

is possible decrypt the generate files using openssl cmdline tool ?

How to aes encrypt more than 16 bytes of data

Hi all,

I need help in encrypting more than 16 bytes of data at a time and number of bytes is not multiple of 4.
Please help me how can I do it.

If I pass data more than 16 bytes, it is encrypting and decrypting only 16 bytes of data. I am using 256-bit key.

<-- Plaintext message: -->
30 81 87 02 01 00 30 13 06 07 2a 86 48 ce 3d 02 01 06 08 2a 86 48 ce 3d 03 01 07 04 6d 30 6b 02 01 01 04 20 de 44 7e 52 39 ad cc 4a 15 b5 16 41 36 17 18 a3 9a 9a 9a 8b 19 5e 1e 74 cd f5 8e 86 f4 cb a9 d5 a1 44 03 42 00 04 af 10 95 51 b7 a5 4f e7 9b 94 71 e6 a3 8f fc 27 0a b3 a1 11 f8 12 cd 11 34 6d df 40 c1 2a ce 75 23 e3 8c 9d 37 d6 10 cf 4d 13 28 86 fd fb de 3f e8 66 64 64 7b 35 22 c1 53 99 ff 29 44 5e 8b ef
Ciphered message:
79 5b d0 b0 45 30 2c 84 fa 4d 89 57 f2 52 1b e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Original message (after inv cipher):
30 81 87 02 01 00 30 13 06 07 2a 86 48 ce 3d 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Question about encrypt file?

How to encrypt a file, if the number of its size is not an integer multiple of 16?

Parameter error？

Sorry