Dear Anton Lundin,
I'm used to program in C# and have zaro experience with C.
Are you aware of any c# code to link to the libdivecomputer ? I can't figure out from the example how to download and use data from a VEO2 computer. Thanks for help, Loïc
Message du 14/11/14 18:02 De : "Anton Lundin" A : "Libdivecomputer Mailinglist" Copie à : Objet : [RFC PATCH 01/10] Import Tiny AES128
This imports Tiny AES128 from https://github.com/kokke/tiny-AES128-C for use in the decoding of OSTC3 firmwares.
This aes-code is released into the public domain.
Signed-off-by: Anton Lundin
msvc/libdivecomputer.vcproj | 6 + src/Makefile.am | 1 + src/aes.c | 486 ++++++++++++++++++++++++++++++++++++++++++++ src/aes.h | 16 ++ 4 files changed, 509 insertions(+) create mode 100644 src/aes.c create mode 100644 src/aes.h
diff --git a/msvc/libdivecomputer.vcproj b/msvc/libdivecomputer.vcproj index 78a8190..10a4cf7 100644 --- a/msvc/libdivecomputer.vcproj +++ b/msvc/libdivecomputer.vcproj @@ -247,6 +247,9 @@
- RelativePath="..\src\aes.c"
- RelativePath="..\src\hw_ostc3.c"
@@ -537,6 +540,9 @@
- RelativePath="..\src\aes.h"
- RelativePath="..\include\libdivecomputer\hw_ostc3.h"
diff --git a/src/Makefile.am b/src/Makefile.am index 595f0c7..eb39a4b 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -43,6 +43,7 @@ libdivecomputer_la_SOURCES = \ ihex.h ihex.c \ hw_ostc.c hw_ostc_parser.c \ hw_frog.c \
- aes.h aes.c \
hw_ostc3.c \ cressi_edy.c cressi_edy_parser.c \ cressi_leonardo.c cressi_leonardo_parser.c \ diff --git a/src/aes.c b/src/aes.c new file mode 100644 index 0000000..000a067 --- /dev/null +++ b/src/aes.c @@ -0,0 +1,486 @@ +/*
+This is an implementation of the AES128 algorithm, specifically ECB mode.
+The implementation is verified against the test vectors in:
- National Institute of Standards and Technology Special Publication 800-38A 2001 ED
+ECB-AES128 +----------
- plain-text:
- 6bc1bee22e409f96e93d7e117393172a
- ae2d8a571e03ac9c9eb76fac45af8e51
- 30c81c46a35ce411e5fbc1191a0a52ef
- f69f2445df4f9b17ad2b417be66c3710
- key:
- 2b7e151628aed2a6abf7158809cf4f3c
- resulting cipher
- 50fe67cc996d32b6da0937e99bafec60
- d9a4dada0892239f6b8b3d7680e15674
- a78819583f0308e7a6bf36b1386abf23
- c6d3416d29165c6fcb8e51a227ba994e
+NOTE: String length must be evenly divisible by 16byte (str_len % 16 == 0)
- You should pad the end of the string with zeros if this is not the case.
+*/
+#ifndef _AES_C_ +#define _AES_C_
+/*****************************************************************************/ +/* Includes: */ +/*****************************************************************************/ +#include +#include "aes.h"
+/*****************************************************************************/ +/* Defines: */ +/*****************************************************************************/ +// The number of columns comprising a state in AES. This is a constant in AES. Value=4 +#define Nb 4 +// The number of 32 bit words in a key. +#define Nk 4 +// Key length in bytes [128 bit] +#define keyln 16 +// The number of rounds in AES Cipher. +#define Nr 10
+/*****************************************************************************/ +/* Private variables: */ +/*****************************************************************************/ +// in - pointer to the CipherText to be decrypted. +// out - pointer to buffer to hold output of the decryption. +// state - array holding the intermediate results during decryption. +static uint8_t* in, *out, state[4][4];
+// The array that stores the round keys. +static uint8_t RoundKey[176];
+// The Key input to the AES Program +static uint8_t* Key;
+// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM +// The numbers below can be computed dynamically trading ROM for RAM - +// This can be useful in (embedded) bootloader applications, where ROM is often limited. +static const uint8_t sbox[256] = {
- //0 1 2 3 4 5 6 7 8 9 A B C D E F
- 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
- 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
- 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
- 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
- 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
- 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
- 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
- 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
- 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
- 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
- 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
- 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
- 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
- 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
- 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
- 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };
+static const uint8_t rsbox[256] = +{ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb +, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb +, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e +, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25 +, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92 +, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84 +, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06 +, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b +, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73 +, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e +, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b +, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4 +, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f +, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef +, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61 +, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };
+// The round constant word array, Rcon[i], contains the values given by +// x to th e power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8) +// Note that i starts at 1, not 0). +static const uint8_t Rcon[255] = {
- 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
- 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
- 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
- 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
- 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
- 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
- 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
- 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
- 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
- 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
- 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
- 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
- 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
- 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
- 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
- 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb };
+/*****************************************************************************/ +/* Private functions: */ +/*****************************************************************************/ +static uint8_t getSBoxValue(uint8_t num) +{
- return sbox[num];
+}
+static uint8_t getSBoxInvert(uint8_t num) +{
- return rsbox[num];
+}
+// This function produces Nb(Nr+1) round keys. The round keys are used in each round to decrypt the states. +static void KeyExpansion() +{
- uint32_t i, j, k;
- uint8_t tempa[4]; // used for the column/row operations
- // The first round key is the key itself.
- for(i = 0; i < Nk; ++i)
- {
- RoundKey[(i * 4) + 0] = Key[(i * 4) + 0];
- RoundKey[(i * 4) + 1] = Key[(i * 4) + 1];
- RoundKey[(i * 4) + 2] = Key[(i * 4) + 2];
- RoundKey[(i * 4) + 3] = Key[(i * 4) + 3];
- }
- // All other round keys are found from the previous round keys.
- for(; (i < (Nb * (Nr + 1))); ++i)
- {
- for(j = 0; j < 4; ++j)
- {
- tempa[j]=RoundKey[(i-1) * 4 + j];
- }
- if (i % Nk == 0)
- {
- // This function rotates the 4 bytes in a word to the left once.
- // [a0,a1,a2,a3] becomes [a1,a2,a3,a0]
- // Function RotWord()
- {
- k = tempa[0];
- tempa[0] = tempa[1];
- tempa[1] = tempa[2];
- tempa[2] = tempa[3];
- tempa[3] = k;
- }
- // SubWord() is a function that takes a four-byte input word and
- // applies the S-box to each of the four bytes to produce an output word.
- // Function Subword()
- {
- tempa[0] = getSBoxValue(tempa[0]);
- tempa[1] = getSBoxValue(tempa[1]);
- tempa[2] = getSBoxValue(tempa[2]);
- tempa[3] = getSBoxValue(tempa[3]);
- }
- tempa[0] = tempa[0] ^ Rcon[i/Nk];
- }
- else if (Nk > 6 && i % Nk == 4)
- {
- // Function Subword()
- {
- tempa[0] = getSBoxValue(tempa[0]);
- tempa[1] = getSBoxValue(tempa[1]);
- tempa[2] = getSBoxValue(tempa[2]);
- tempa[3] = getSBoxValue(tempa[3]);
- }
- }
- RoundKey[i * 4 + 0] = RoundKey[(i - Nk) * 4 + 0] ^ tempa[0];
- RoundKey[i * 4 + 1] = RoundKey[(i - Nk) * 4 + 1] ^ tempa[1];
- RoundKey[i * 4 + 2] = RoundKey[(i - Nk) * 4 + 2] ^ tempa[2];
- RoundKey[i * 4 + 3] = RoundKey[(i - Nk) * 4 + 3] ^ tempa[3];
- }
+}
+// This function adds the round key to state. +// The round key is added to the state by an XOR function. +static void AddRoundKey(uint8_t round) +{
- uint8_t i,j;
- for(i=0;i<4;i++)
- {
- for(j = 0; j < 4; ++j)
- {
- state[j][i] ^= RoundKey[round * Nb * 4 + i * Nb + j];
- }
- }
+}
+// The SubBytes Function Substitutes the values in the +// state matrix with values in an S-box. +static void SubBytes() +{
- uint8_t i, j;
- for(i = 0; i < 4; ++i)
- {
- for(j = 0; j < 4; ++j)
- {
- state[i][j] = getSBoxValue(state[i][j]);
- }
- }
+}
+// The ShiftRows() function shifts the rows in the state to the left. +// Each row is shifted with different offset. +// Offset = Row number. So the first row is not shifted. +static void ShiftRows() +{
- uint8_t temp;
- // Rotate first row 1 columns to left
- temp = state[1][0];
- state[1][0] = state[1][1];
- state[1][1] = state[1][2];
- state[1][2] = state[1][3];
- state[1][3] = temp;
- // Rotate second row 2 columns to left
- temp = state[2][0];
- state[2][0] = state[2][2];
- state[2][2] = temp;
- temp = state[2][1];
- state[2][1] = state[2][3];
- state[2][3] = temp;
- // Rotate third row 3 columns to left
- temp = state[3][0];
- state[3][0] = state[3][3];
- state[3][3] = state[3][2];
- state[3][2] = state[3][1];
- state[3][1] = temp;
+}
+static uint8_t xtime(uint8_t x) +{
- return ((x<<1) ^ (((x>>7) & 1) * 0x1b));
+}
+// MixColumns function mixes the columns of the state matrix +static void MixColumns() +{
- uint8_t i;
- uint8_t Tmp,Tm,t;
- for(i = 0; i < 4; ++i)
- {
- t = state[0][i];
- Tmp = state[0][i] ^ state[1][i] ^ state[2][i] ^ state[3][i] ;
- Tm = state[0][i] ^ state[1][i] ; Tm = xtime(Tm); state[0][i] ^= Tm ^ Tmp ;
- Tm = state[1][i] ^ state[2][i] ; Tm = xtime(Tm); state[1][i] ^= Tm ^ Tmp ;
- Tm = state[2][i] ^ state[3][i] ; Tm = xtime(Tm); state[2][i] ^= Tm ^ Tmp ;
- Tm = state[3][i] ^ t ; Tm = xtime(Tm); state[3][i] ^= Tm ^ Tmp ;
- }
+}
+// Multiplty is a macro used to multiply numbers in the field GF(2^8) +#define Multiply(x,y) (((y & 1) * x) ^ ((y>>1 & 1) * xtime(x)) ^ ((y>>2 & 1) * xtime(xtime(x))) ^ ((y>>3 & 1) * xtime(xtime(xtime(x)))) ^ ((y>>4 & 1) * xtime(xtime(xtime(xtime(x))))))
+// MixColumns function mixes the columns of the state matrix. +// The method used to multiply may be difficult to understand for the inexperienced. +// Please use the references to gain more information. +static void InvMixColumns() +{
- int i;
- uint8_t a,b,c,d;
- for(i=0;i<4;i++)
- {
- a = state[0][i];
- b = state[1][i];
- c = state[2][i];
- d = state[3][i];
- state[0][i] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);
- state[1][i] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);
- state[2][i] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);
- state[3][i] = Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e);
- }
+}
+// The SubBytes Function Substitutes the values in the +// state matrix with values in an S-box. +static void InvSubBytes() +{
- uint8_t i,j;
- for(i=0;i<4;i++)
- {
- for(j=0;j<4;j++)
- {
- state[i][j] = getSBoxInvert(state[i][j]);
- }
- }
+}
+static void InvShiftRows() +{
- uint8_t temp;
- // Rotate first row 1 columns to right
- temp=state[1][3];
- state[1][3]=state[1][2];
- state[1][2]=state[1][1];
- state[1][1]=state[1][0];
- state[1][0]=temp;
- // Rotate second row 2 columns to right
- temp=state[2][0];
- state[2][0]=state[2][2];
- state[2][2]=temp;
- temp=state[2][1];
- state[2][1]=state[2][3];
- state[2][3]=temp;
- // Rotate third row 3 columns to right
- temp=state[3][0];
- state[3][0]=state[3][1];
- state[3][1]=state[3][2];
- state[3][2]=state[3][3];
- state[3][3]=temp;
+}
+// Cipher is the main function that encrypts the PlainText. +static void Cipher() +{
- uint8_t i, j, round = 0;
- //Copy the input PlainText to state array.
- for(i = 0; i < 4; ++i)
- {
- for(j = 0; j < 4 ; ++j)
- {
- state[j][i] = in[(i * 4) + j];
- }
- }
- // Add the First round key to the state before starting the rounds.
- AddRoundKey(0);
- // There will be Nr rounds.
- // The first Nr-1 rounds are identical.
- // These Nr-1 rounds are executed in the loop below.
- for(round = 1; round < Nr; ++round)
- {
- SubBytes();
- ShiftRows();
- MixColumns();
- AddRoundKey(round);
- }
- // The last round is given below.
- // The MixColumns function is not here in the last round.
- SubBytes();
- ShiftRows();
- AddRoundKey(Nr);
- // The encryption process is over.
- // Copy the state array to output array.
- for(i = 0; i < 4; ++i)
- {
- for(j = 0; j < 4; ++j)
- {
- out[(i * 4) + j] = state[j][i];
- }
- }
+}
+static void InvCipher() +{
- uint8_t i,j,round=0;
- //Copy the input CipherText to state array.
- for(i=0;i<4;i++)
- {
- for(j=0;j<4;j++)
- {
- state[j][i] = in[i*4 + j];
- }
- }
- // Add the First round key to the state before starting the rounds.
- AddRoundKey(Nr);
- // There will be Nr rounds.
- // The first Nr-1 rounds are identical.
- // These Nr-1 rounds are executed in the loop below.
- for(round=Nr-1;round>0;round--)
- {
- InvShiftRows();
- InvSubBytes();
- AddRoundKey(round);
- InvMixColumns();
- }
- // The last round is given below.
- // The MixColumns function is not here in the last round.
- InvShiftRows();
- InvSubBytes();
- AddRoundKey(0);
- // The decryption process is over.
- // Copy the state array to output array.
- for(i=0;i<4;i++)
- {
- for(j=0;j<4;j++)
- {
- out[i*4+j]=state[j][i];
- }
- }
+}
+/*****************************************************************************/ +/* Public functions: */ +/*****************************************************************************/
+void AES128_ECB_encrypt(uint8_t* input, uint8_t* key, uint8_t *output) +{
- // Copy the Key and CipherText
- Key = key;
- in = input;
- out = output;
- // The KeyExpansion routine must be called before encryption.
- KeyExpansion();
- // The next function call encrypts the PlainText with the Key using AES algorithm.
- Cipher();
+}
+void AES128_ECB_decrypt(uint8_t* input, uint8_t* key, uint8_t *output) +{
- Key = key;
- in = input;
- out = output;
- KeyExpansion();
- InvCipher();
+}
+#endif //_AES_C_
diff --git a/src/aes.h b/src/aes.h new file mode 100644 index 0000000..5fb2176 --- /dev/null +++ b/src/aes.h @@ -0,0 +1,16 @@ +#ifndef _AES_H_ +#define _AES_H_
+#include
+#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */
+void AES128_ECB_encrypt(uint8_t* input, uint8_t* key, uint8_t *output); +void AES128_ECB_decrypt(uint8_t* input, uint8_t* key, uint8_t *output);
+#ifdef __cplusplus +} +#endif /* __cplusplus */
+#endif //_AES_H_
1.9.1
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