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add aes128cfb, delete unused files
This commit is contained in:
wangyu-
parent
a7849b3634
commit
565034dbae
37
encrypt.cpp
37
encrypt.cpp
@ -1,4 +1,4 @@
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#include "lib/aes.h"
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#include "lib/aes-common.h"
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#include "lib/md5.h"
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#include "lib/md5.h"
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#include "lib/pbkdf2-sha1.h"
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#include "lib/pbkdf2-sha1.h"
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#include "lib/pbkdf2-sha256.h"
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#include "lib/pbkdf2-sha256.h"
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@ -28,7 +28,7 @@ unsigned char cipher_key_decrypt[cipher_key_len + 100]; //key for aes etc.
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unordered_map<int, const char *> auth_mode_tostring = {{auth_none, "none"}, {auth_md5, "md5"}, {auth_crc32, "crc32"},{auth_simple,"simple"},{auth_hmac_sha1,"hmac_sha1"},};
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unordered_map<int, const char *> auth_mode_tostring = {{auth_none, "none"}, {auth_md5, "md5"}, {auth_crc32, "crc32"},{auth_simple,"simple"},{auth_hmac_sha1,"hmac_sha1"},};
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unordered_map<int, const char *> cipher_mode_tostring={{cipher_none,"none"},{cipher_aes128cbc,"aes128cbc"},{cipher_xor,"xor"},};
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unordered_map<int, const char *> cipher_mode_tostring={{cipher_none,"none"},{cipher_aes128cfb,"aes128cfb"},{cipher_aes128cbc,"aes128cbc"},{cipher_xor,"xor"},};
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//TODO aes-gcm
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//TODO aes-gcm
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auth_mode_t auth_mode=auth_md5;
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auth_mode_t auth_mode=auth_md5;
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@ -320,6 +320,23 @@ int cipher_aes128cbc_encrypt(const char *data,char *output,int &len,char * key)
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AES_CBC_encrypt_buffer((unsigned char *)output,(unsigned char *)buf,len,(unsigned char *)key,(unsigned char *)zero_iv);
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AES_CBC_encrypt_buffer((unsigned char *)output,(unsigned char *)buf,len,(unsigned char *)key,(unsigned char *)zero_iv);
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return 0;
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return 0;
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}
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}
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int cipher_aes128cfb_encrypt(const char *data,char *output,int &len,char * key)
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{
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static int first_time=1;
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if(aes_key_optimize)
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{
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if(first_time==0) key=0;
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else first_time=0;
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}
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char buf[buf_len];
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memcpy(buf,data,len);//TODO inefficient code
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//if(padding(buf,len,16)<0) return -1;
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AES_CFB_encrypt_buffer((unsigned char *)output,(unsigned char *)buf,len,(unsigned char *)key,(unsigned char *)zero_iv);
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return 0;
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}
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int auth_crc32_verify(const char *data,int &len)
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int auth_crc32_verify(const char *data,int &len)
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{
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{
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if(len<int(sizeof(unsigned int)))
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if(len<int(sizeof(unsigned int)))
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@ -357,6 +374,20 @@ int cipher_aes128cbc_decrypt(const char *data,char *output,int &len,char * key)
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if(de_padding(output,len,16)<0) return -1;
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if(de_padding(output,len,16)<0) return -1;
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return 0;
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return 0;
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}
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}
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int cipher_aes128cfb_decrypt(const char *data,char *output,int &len,char * key)
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{
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static int first_time=1;
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if(aes_key_optimize)
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{
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if(first_time==0) key=0;
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else first_time=0;
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}
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//if(len%16 !=0) {mylog(log_debug,"len%%16!=0\n");return -1;}
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//if(len<0) {mylog(log_debug,"len <0\n");return -1;}
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AES_CFB_decrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv);
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//if(de_padding(output,len,16)<0) return -1;
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return 0;
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}
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int cipher_none_decrypt(const char *data,char *output,int &len,char * key)
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int cipher_none_decrypt(const char *data,char *output,int &len,char * key)
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{
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{
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@ -402,6 +433,7 @@ int cipher_encrypt(const char *data,char *output,int &len,char * key)
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switch(cipher_mode)
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switch(cipher_mode)
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{
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{
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case cipher_aes128cbc:return cipher_aes128cbc_encrypt(data,output,len, key);
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case cipher_aes128cbc:return cipher_aes128cbc_encrypt(data,output,len, key);
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case cipher_aes128cfb:return cipher_aes128cfb_encrypt(data,output,len, key);
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case cipher_xor:return cipher_xor_encrypt(data,output,len, key);
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case cipher_xor:return cipher_xor_encrypt(data,output,len, key);
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case cipher_none:return cipher_none_encrypt(data,output,len, key);
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case cipher_none:return cipher_none_encrypt(data,output,len, key);
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//default:return cipher_aes128cbc_encrypt(data,output,len, key);
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//default:return cipher_aes128cbc_encrypt(data,output,len, key);
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@ -415,6 +447,7 @@ int cipher_decrypt(const char *data,char *output,int &len,char * key)
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switch(cipher_mode)
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switch(cipher_mode)
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{
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{
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case cipher_aes128cbc:return cipher_aes128cbc_decrypt(data,output,len, key);
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case cipher_aes128cbc:return cipher_aes128cbc_decrypt(data,output,len, key);
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case cipher_aes128cfb:return cipher_aes128cfb_decrypt(data,output,len, key);
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case cipher_xor:return cipher_xor_decrypt(data,output,len, key);
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case cipher_xor:return cipher_xor_decrypt(data,output,len, key);
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case cipher_none:return cipher_none_decrypt(data,output,len, key);
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case cipher_none:return cipher_none_decrypt(data,output,len, key);
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// default: return cipher_aes128cbc_decrypt(data,output,len,key);
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// default: return cipher_aes128cbc_decrypt(data,output,len,key);
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@ -25,7 +25,7 @@ unsigned short csum(const unsigned short *ptr,int nbytes) ;
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enum auth_mode_t {auth_none=0,auth_md5,auth_crc32,auth_simple,auth_hmac_sha1,auth_end};
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enum auth_mode_t {auth_none=0,auth_md5,auth_crc32,auth_simple,auth_hmac_sha1,auth_end};
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enum cipher_mode_t {cipher_none=0,cipher_aes128cbc,cipher_xor,cipher_end};
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enum cipher_mode_t {cipher_none=0,cipher_aes128cbc,cipher_xor,cipher_aes128cfb,cipher_end};
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extern auth_mode_t auth_mode;
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extern auth_mode_t auth_mode;
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20
lib/aes-common.h
Executable file
20
lib/aes-common.h
Executable file
@ -0,0 +1,20 @@
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/*
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* this file comes from https://github.com/kokke/tiny-AES128-C
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*/
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#pragma once
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#include <stdint.h>
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void AES_ECB_encrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length);
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void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length);
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void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv);
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void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv);
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void AES_CFB_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv);
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void AES_CFB_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv);
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600
lib/aes.cpp
600
lib/aes.cpp
@ -1,600 +0,0 @@
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/*
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* this file comes from https://github.com/kokke/tiny-AES128-C
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*/
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/*
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This is an implementation of the AES algorithm, specifically ECB and CBC mode.
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Block size can be chosen in aes.h - available choices are AES128, AES192, AES256.
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The implementation is verified against the test vectors in:
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National Institute of Standards and Technology Special Publication 800-38A 2001 ED
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ECB-AES128
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----------
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plain-text:
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6bc1bee22e409f96e93d7e117393172a
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ae2d8a571e03ac9c9eb76fac45af8e51
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30c81c46a35ce411e5fbc1191a0a52ef
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f69f2445df4f9b17ad2b417be66c3710
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key:
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2b7e151628aed2a6abf7158809cf4f3c
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resulting cipher
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3ad77bb40d7a3660a89ecaf32466ef97
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f5d3d58503b9699de785895a96fdbaaf
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43b1cd7f598ece23881b00e3ed030688
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7b0c785e27e8ad3f8223207104725dd4
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NOTE: String length must be evenly divisible by 16byte (str_len % 16 == 0)
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You should pad the end of the string with zeros if this is not the case.
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For AES192/256 the block size is proportionally larger.
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*/
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/*****************************************************************************/
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/* Includes: */
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/*****************************************************************************/
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#include <stdint.h>
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#include <string.h> // CBC mode, for memset
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#include "aes.h"
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/*****************************************************************************/
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/* Defines: */
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/*****************************************************************************/
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// The number of columns comprising a state in AES. This is a constant in AES. Value=4
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#define Nb 4
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#define BLOCKLEN 16 //Block length in bytes AES is 128b block only
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#if defined(AES256) && (AES256 == 1)
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#define Nk 8
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#define KEYLEN 32
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#define Nr 14
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#define keyExpSize 240
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#elif defined(AES192) && (AES192 == 1)
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#define Nk 6
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#define KEYLEN 24
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#define Nr 12
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#define keyExpSize 208
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#else
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#define Nk 4 // The number of 32 bit words in a key.
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#define KEYLEN 16 // Key length in bytes
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#define Nr 10 // The number of rounds in AES Cipher.
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#define keyExpSize 176
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#endif
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// jcallan@github points out that declaring Multiply as a function
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// reduces code size considerably with the Keil ARM compiler.
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// See this link for more information: https://github.com/kokke/tiny-AES128-C/pull/3
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#ifndef MULTIPLY_AS_A_FUNCTION
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#define MULTIPLY_AS_A_FUNCTION 0
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#endif
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/*****************************************************************************/
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/* Private variables: */
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/*****************************************************************************/
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// state - array holding the intermediate results during decryption.
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typedef uint8_t state_t[4][4];
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static state_t* state;
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// The array that stores the round keys.
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static uint8_t RoundKey[keyExpSize];
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// The Key input to the AES Program
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static const uint8_t* Key;
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#if defined(CBC) && CBC
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// Initial Vector used only for CBC mode
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static uint8_t* Iv;
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#endif
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// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM
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// The numbers below can be computed dynamically trading ROM for RAM -
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// This can be useful in (embedded) bootloader applications, where ROM is often limited.
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static const uint8_t sbox[256] = {
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//0 1 2 3 4 5 6 7 8 9 A B C D E F
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0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
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0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
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0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
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0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
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0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
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0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
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0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
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0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
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0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
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0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
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0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
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0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
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0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
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0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
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0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
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0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };
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static const uint8_t rsbox[256] = {
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0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
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0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
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0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
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0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
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0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
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0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
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0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
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0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
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0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
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0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
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0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
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0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
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0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
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0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
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|
||||||
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)
|
|
||||||
static const uint8_t Rcon[11] = {
|
|
||||||
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Jordan Goulder points out in PR #12 (https://github.com/kokke/tiny-AES128-C/pull/12),
|
|
||||||
* that you can remove most of the elements in the Rcon array, because they are unused.
|
|
||||||
*
|
|
||||||
* From Wikipedia's article on the Rijndael key schedule @ https://en.wikipedia.org/wiki/Rijndael_key_schedule#Rcon
|
|
||||||
*
|
|
||||||
* "Only the first some of these constants are actually used – up to rcon[10] for AES-128 (as 11 round keys are needed),
|
|
||||||
* up to rcon[8] for AES-192, up to rcon[7] for AES-256. rcon[0] is not used in AES algorithm."
|
|
||||||
*
|
|
||||||
* ... which is why the full array below has been 'disabled' below.
|
|
||||||
*/
|
|
||||||
#if 0
|
|
||||||
static const uint8_t Rcon[256] = {
|
|
||||||
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, 0x8d };
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/*****************************************************************************/
|
|
||||||
/* 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(void)
|
|
||||||
{
|
|
||||||
uint32_t i, 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.
|
|
||||||
//i == Nk
|
|
||||||
for (; i < Nb * (Nr + 1); ++i)
|
|
||||||
{
|
|
||||||
{
|
|
||||||
tempa[0]=RoundKey[(i-1) * 4 + 0];
|
|
||||||
tempa[1]=RoundKey[(i-1) * 4 + 1];
|
|
||||||
tempa[2]=RoundKey[(i-1) * 4 + 2];
|
|
||||||
tempa[3]=RoundKey[(i-1) * 4 + 3];
|
|
||||||
}
|
|
||||||
|
|
||||||
if (i % Nk == 0)
|
|
||||||
{
|
|
||||||
// This function shifts 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];
|
|
||||||
}
|
|
||||||
#if defined(AES256) && (AES256 == 1)
|
|
||||||
if (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]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
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)[i][j] ^= 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(void)
|
|
||||||
{
|
|
||||||
uint8_t i, j;
|
|
||||||
for (i = 0; i < 4; ++i)
|
|
||||||
{
|
|
||||||
for (j = 0; j < 4; ++j)
|
|
||||||
{
|
|
||||||
(*state)[j][i] = getSBoxValue((*state)[j][i]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// 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(void)
|
|
||||||
{
|
|
||||||
uint8_t temp;
|
|
||||||
|
|
||||||
// Rotate first row 1 columns to left
|
|
||||||
temp = (*state)[0][1];
|
|
||||||
(*state)[0][1] = (*state)[1][1];
|
|
||||||
(*state)[1][1] = (*state)[2][1];
|
|
||||||
(*state)[2][1] = (*state)[3][1];
|
|
||||||
(*state)[3][1] = temp;
|
|
||||||
|
|
||||||
// Rotate second row 2 columns to left
|
|
||||||
temp = (*state)[0][2];
|
|
||||||
(*state)[0][2] = (*state)[2][2];
|
|
||||||
(*state)[2][2] = temp;
|
|
||||||
|
|
||||||
temp = (*state)[1][2];
|
|
||||||
(*state)[1][2] = (*state)[3][2];
|
|
||||||
(*state)[3][2] = temp;
|
|
||||||
|
|
||||||
// Rotate third row 3 columns to left
|
|
||||||
temp = (*state)[0][3];
|
|
||||||
(*state)[0][3] = (*state)[3][3];
|
|
||||||
(*state)[3][3] = (*state)[2][3];
|
|
||||||
(*state)[2][3] = (*state)[1][3];
|
|
||||||
(*state)[1][3] = 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(void)
|
|
||||||
{
|
|
||||||
uint8_t i;
|
|
||||||
uint8_t Tmp,Tm,t;
|
|
||||||
for (i = 0; i < 4; ++i)
|
|
||||||
{
|
|
||||||
t = (*state)[i][0];
|
|
||||||
Tmp = (*state)[i][0] ^ (*state)[i][1] ^ (*state)[i][2] ^ (*state)[i][3] ;
|
|
||||||
Tm = (*state)[i][0] ^ (*state)[i][1] ; Tm = xtime(Tm); (*state)[i][0] ^= Tm ^ Tmp ;
|
|
||||||
Tm = (*state)[i][1] ^ (*state)[i][2] ; Tm = xtime(Tm); (*state)[i][1] ^= Tm ^ Tmp ;
|
|
||||||
Tm = (*state)[i][2] ^ (*state)[i][3] ; Tm = xtime(Tm); (*state)[i][2] ^= Tm ^ Tmp ;
|
|
||||||
Tm = (*state)[i][3] ^ t ; Tm = xtime(Tm); (*state)[i][3] ^= Tm ^ Tmp ;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Multiply is used to multiply numbers in the field GF(2^8)
|
|
||||||
#if MULTIPLY_AS_A_FUNCTION
|
|
||||||
static uint8_t Multiply(uint8_t x, uint8_t y)
|
|
||||||
{
|
|
||||||
return (((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))))));
|
|
||||||
}
|
|
||||||
#else
|
|
||||||
#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)))))) \
|
|
||||||
|
|
||||||
#endif
|
|
||||||
|
|
||||||
// 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(void)
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
uint8_t a, b, c, d;
|
|
||||||
for (i = 0; i < 4; ++i)
|
|
||||||
{
|
|
||||||
a = (*state)[i][0];
|
|
||||||
b = (*state)[i][1];
|
|
||||||
c = (*state)[i][2];
|
|
||||||
d = (*state)[i][3];
|
|
||||||
|
|
||||||
(*state)[i][0] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);
|
|
||||||
(*state)[i][1] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);
|
|
||||||
(*state)[i][2] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);
|
|
||||||
(*state)[i][3] = 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(void)
|
|
||||||
{
|
|
||||||
uint8_t i,j;
|
|
||||||
for (i = 0; i < 4; ++i)
|
|
||||||
{
|
|
||||||
for (j = 0; j < 4; ++j)
|
|
||||||
{
|
|
||||||
(*state)[j][i] = getSBoxInvert((*state)[j][i]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static void InvShiftRows(void)
|
|
||||||
{
|
|
||||||
uint8_t temp;
|
|
||||||
|
|
||||||
// Rotate first row 1 columns to right
|
|
||||||
temp = (*state)[3][1];
|
|
||||||
(*state)[3][1] = (*state)[2][1];
|
|
||||||
(*state)[2][1] = (*state)[1][1];
|
|
||||||
(*state)[1][1] = (*state)[0][1];
|
|
||||||
(*state)[0][1] = temp;
|
|
||||||
|
|
||||||
// Rotate second row 2 columns to right
|
|
||||||
temp = (*state)[0][2];
|
|
||||||
(*state)[0][2] = (*state)[2][2];
|
|
||||||
(*state)[2][2] = temp;
|
|
||||||
|
|
||||||
temp = (*state)[1][2];
|
|
||||||
(*state)[1][2] = (*state)[3][2];
|
|
||||||
(*state)[3][2] = temp;
|
|
||||||
|
|
||||||
// Rotate third row 3 columns to right
|
|
||||||
temp = (*state)[0][3];
|
|
||||||
(*state)[0][3] = (*state)[1][3];
|
|
||||||
(*state)[1][3] = (*state)[2][3];
|
|
||||||
(*state)[2][3] = (*state)[3][3];
|
|
||||||
(*state)[3][3] = temp;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
// Cipher is the main function that encrypts the PlainText.
|
|
||||||
static void Cipher(void)
|
|
||||||
{
|
|
||||||
uint8_t round = 0;
|
|
||||||
|
|
||||||
// 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);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void InvCipher(void)
|
|
||||||
{
|
|
||||||
uint8_t round=0;
|
|
||||||
|
|
||||||
// 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);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*****************************************************************************/
|
|
||||||
/* Public functions: */
|
|
||||||
/*****************************************************************************/
|
|
||||||
#if defined(ECB) && (ECB == 1)
|
|
||||||
|
|
||||||
|
|
||||||
void AES_ECB_encrypt(const uint8_t* input, const uint8_t* key, uint8_t* output, const uint32_t length)
|
|
||||||
{
|
|
||||||
// Copy input to output, and work in-memory on output
|
|
||||||
memcpy(output, input, length);
|
|
||||||
state = (state_t*)output;
|
|
||||||
|
|
||||||
Key = key;
|
|
||||||
KeyExpansion();
|
|
||||||
|
|
||||||
// The next function call encrypts the PlainText with the Key using AES algorithm.
|
|
||||||
Cipher();
|
|
||||||
}
|
|
||||||
|
|
||||||
void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length)
|
|
||||||
{
|
|
||||||
// Copy input to output, and work in-memory on output
|
|
||||||
memcpy(output, input, length);
|
|
||||||
state = (state_t*)output;
|
|
||||||
|
|
||||||
// The KeyExpansion routine must be called before encryption.
|
|
||||||
Key = key;
|
|
||||||
KeyExpansion();
|
|
||||||
|
|
||||||
InvCipher();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
#endif // #if defined(ECB) && (ECB == 1)
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
#if defined(CBC) && (CBC == 1)
|
|
||||||
|
|
||||||
|
|
||||||
static void XorWithIv(uint8_t* buf)
|
|
||||||
{
|
|
||||||
uint8_t i;
|
|
||||||
for (i = 0; i < BLOCKLEN; ++i) //WAS for(i = 0; i < KEYLEN; ++i) but the block in AES is always 128bit so 16 bytes!
|
|
||||||
{
|
|
||||||
buf[i] ^= Iv[i];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
|
||||||
{
|
|
||||||
uintptr_t i;
|
|
||||||
uint8_t extra = length % BLOCKLEN; /* Remaining bytes in the last non-full block */
|
|
||||||
|
|
||||||
// Skip the key expansion if key is passed as 0
|
|
||||||
if (0 != key)
|
|
||||||
{
|
|
||||||
Key = key;
|
|
||||||
KeyExpansion();
|
|
||||||
}
|
|
||||||
|
|
||||||
if (iv != 0)
|
|
||||||
{
|
|
||||||
Iv = (uint8_t*)iv;
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = 0; i < length; i += BLOCKLEN)
|
|
||||||
{
|
|
||||||
XorWithIv(input);
|
|
||||||
memcpy(output, input, BLOCKLEN);
|
|
||||||
state = (state_t*)output;
|
|
||||||
Cipher();
|
|
||||||
Iv = output;
|
|
||||||
input += BLOCKLEN;
|
|
||||||
output += BLOCKLEN;
|
|
||||||
//printf("Step %d - %d", i/16, i);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (extra)
|
|
||||||
{
|
|
||||||
memcpy(output, input, extra);
|
|
||||||
state = (state_t*)output;
|
|
||||||
Cipher();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
|
||||||
{
|
|
||||||
uintptr_t i;
|
|
||||||
uint8_t extra = length % BLOCKLEN; /* Remaining bytes in the last non-full block */
|
|
||||||
|
|
||||||
// Skip the key expansion if key is passed as 0
|
|
||||||
if (0 != key)
|
|
||||||
{
|
|
||||||
Key = key;
|
|
||||||
KeyExpansion();
|
|
||||||
}
|
|
||||||
|
|
||||||
// If iv is passed as 0, we continue to encrypt without re-setting the Iv
|
|
||||||
if (iv != 0)
|
|
||||||
{
|
|
||||||
Iv = (uint8_t*)iv;
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = 0; i < length; i += BLOCKLEN)
|
|
||||||
{
|
|
||||||
memcpy(output, input, BLOCKLEN);
|
|
||||||
state = (state_t*)output;
|
|
||||||
InvCipher();
|
|
||||||
XorWithIv(output);
|
|
||||||
Iv = input;
|
|
||||||
input += BLOCKLEN;
|
|
||||||
output += BLOCKLEN;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (extra)
|
|
||||||
{
|
|
||||||
memcpy(output, input, extra);
|
|
||||||
state = (state_t*)output;
|
|
||||||
InvCipher();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif // #if defined(CBC) && (CBC == 1)
|
|
||||||
45
lib/aes.h
45
lib/aes.h
@ -1,45 +0,0 @@
|
|||||||
/*
|
|
||||||
* this file comes from https://github.com/kokke/tiny-AES128-C
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef UDP2RAW_AES_H_
|
|
||||||
#define UDP2RAW_AES_H_
|
|
||||||
|
|
||||||
#include <stdint.h>
|
|
||||||
|
|
||||||
|
|
||||||
// #define the macros below to 1/0 to enable/disable the mode of operation.
|
|
||||||
//
|
|
||||||
// CBC enables AES encryption in CBC-mode of operation.
|
|
||||||
// ECB enables the basic ECB 16-byte block algorithm. Both can be enabled simultaneously.
|
|
||||||
|
|
||||||
// The #ifndef-guard allows it to be configured before #include'ing or at compile time.
|
|
||||||
#ifndef CBC
|
|
||||||
#define CBC 1
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef ECB
|
|
||||||
#define ECB 1
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#define AES128 1
|
|
||||||
//#define AES192 1
|
|
||||||
//#define AES256 1
|
|
||||||
|
|
||||||
#if defined(ECB) && (ECB == 1)
|
|
||||||
|
|
||||||
void AES_ECB_encrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length);
|
|
||||||
void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length);
|
|
||||||
|
|
||||||
#endif // #if defined(ECB) && (ECB == !)
|
|
||||||
|
|
||||||
|
|
||||||
#if defined(CBC) && (CBC == 1)
|
|
||||||
|
|
||||||
void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv);
|
|
||||||
void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv);
|
|
||||||
|
|
||||||
#endif // #if defined(CBC) && (CBC == 1)
|
|
||||||
|
|
||||||
|
|
||||||
#endif //_AES_H_
|
|
||||||
@ -37,6 +37,7 @@
|
|||||||
////////modification begin
|
////////modification begin
|
||||||
#define POLARSSL_AES_ROM_TABLES
|
#define POLARSSL_AES_ROM_TABLES
|
||||||
#define POLARSSL_CIPHER_MODE_CBC
|
#define POLARSSL_CIPHER_MODE_CBC
|
||||||
|
#define POLARSSL_CIPHER_MODE_CFB
|
||||||
//#define POLARSSL_SELF_TEST
|
//#define POLARSSL_SELF_TEST
|
||||||
#define polarssl_printf printf
|
#define polarssl_printf printf
|
||||||
///////add end
|
///////add end
|
||||||
|
|||||||
@ -1,6 +1,7 @@
|
|||||||
#include "aes.h"
|
#include "aes.h"
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
|
#include <assert.h>
|
||||||
|
|
||||||
#if defined(AES256) && (AES256 == 1)
|
#if defined(AES256) && (AES256 == 1)
|
||||||
#define AES_KEYSIZE 256
|
#define AES_KEYSIZE 256
|
||||||
@ -25,32 +26,64 @@ void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output,
|
|||||||
void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
||||||
{
|
{
|
||||||
static aes_context ctx;
|
static aes_context ctx;
|
||||||
static int done=0;
|
|
||||||
if(done==0)
|
|
||||||
{
|
|
||||||
aes_init( &ctx);
|
|
||||||
done=1;
|
|
||||||
}
|
|
||||||
|
|
||||||
char tmp_iv[16];
|
char tmp_iv[16];
|
||||||
if(key!=0) aes_setkey_enc(&ctx,key,AES_KEYSIZE);
|
if(key!=0)
|
||||||
|
{
|
||||||
|
aes_init( &ctx);
|
||||||
|
aes_setkey_enc(&ctx,key,AES_KEYSIZE);
|
||||||
|
}
|
||||||
memcpy(tmp_iv,iv,16);
|
memcpy(tmp_iv,iv,16);
|
||||||
aes_crypt_cbc( &ctx, AES_ENCRYPT, length, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
|
int ret=aes_crypt_cbc( &ctx, AES_ENCRYPT, length, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
|
||||||
|
assert(ret==0);
|
||||||
return ;
|
return ;
|
||||||
}
|
}
|
||||||
void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
||||||
{
|
{
|
||||||
static aes_context ctx;
|
static aes_context ctx;
|
||||||
static int done=0;
|
|
||||||
if(done==0)
|
|
||||||
{
|
|
||||||
aes_init( &ctx);
|
|
||||||
done=1;
|
|
||||||
}
|
|
||||||
|
|
||||||
char tmp_iv[16];
|
char tmp_iv[16];
|
||||||
if(key!=0) aes_setkey_dec(&ctx,key,AES_KEYSIZE);
|
if(key!=0)
|
||||||
|
{
|
||||||
|
aes_init( &ctx);
|
||||||
|
aes_setkey_dec(&ctx,key,AES_KEYSIZE);
|
||||||
|
}
|
||||||
memcpy(tmp_iv,iv,16);
|
memcpy(tmp_iv,iv,16);
|
||||||
aes_crypt_cbc( &ctx,AES_DECRYPT, length, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
|
int ret=aes_crypt_cbc( &ctx,AES_DECRYPT, length, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
|
||||||
|
assert(ret==0);
|
||||||
|
}
|
||||||
|
|
||||||
|
void AES_CFB_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
||||||
|
{
|
||||||
|
static aes_context ctx;
|
||||||
|
|
||||||
|
char tmp_iv[16];
|
||||||
|
if(key!=0)
|
||||||
|
{
|
||||||
|
aes_init( &ctx);
|
||||||
|
aes_setkey_enc(&ctx,key,AES_KEYSIZE);
|
||||||
|
}
|
||||||
|
memcpy(tmp_iv,iv,16);
|
||||||
|
size_t offset=0;
|
||||||
|
int ret=aes_crypt_cfb128( &ctx, AES_ENCRYPT, length,&offset, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
|
||||||
|
assert(ret==0);
|
||||||
|
return ;
|
||||||
|
}
|
||||||
|
void AES_CFB_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
|
||||||
|
{
|
||||||
|
static aes_context ctx;
|
||||||
|
|
||||||
|
char tmp_iv[16];
|
||||||
|
if(key!=0)
|
||||||
|
{
|
||||||
|
aes_init( &ctx);
|
||||||
|
aes_setkey_enc(&ctx,key,AES_KEYSIZE);// its aes_setkey_enc again, no typo
|
||||||
|
}
|
||||||
|
memcpy(tmp_iv,iv,16);
|
||||||
|
size_t offset=0;
|
||||||
|
int ret=aes_crypt_cfb128( &ctx,AES_DECRYPT, length,&offset, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
|
||||||
|
assert(ret==0);
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
345
lib/sha1.c
345
lib/sha1.c
@ -1,345 +0,0 @@
|
|||||||
/*
|
|
||||||
* This file is adapted from PolarSSL 1.3.19 (GPL)
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* FIPS-180-1 compliant SHA-1 implementation
|
|
||||||
*
|
|
||||||
* Copyright (C) 2006-2014, ARM Limited, All Rights Reserved
|
|
||||||
*
|
|
||||||
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
||||||
*
|
|
||||||
* This program is free software; you can redistribute it and/or modify
|
|
||||||
* it under the terms of the GNU General Public License as published by
|
|
||||||
* the Free Software Foundation; either version 2 of the License, or
|
|
||||||
* (at your option) any later version.
|
|
||||||
*
|
|
||||||
* This program is distributed in the hope that it will be useful,
|
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
* GNU General Public License for more details.
|
|
||||||
*
|
|
||||||
* You should have received a copy of the GNU General Public License along
|
|
||||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
||||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
||||||
*/
|
|
||||||
/*
|
|
||||||
* The SHA-1 standard was published by NIST in 1993.
|
|
||||||
*
|
|
||||||
* http://www.itl.nist.gov/fipspubs/fip180-1.htm
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <string.h>
|
|
||||||
#include <stddef.h>
|
|
||||||
#include <stdint.h>
|
|
||||||
|
|
||||||
typedef struct
|
|
||||||
{
|
|
||||||
uint32_t total[2]; /*!< number of bytes processed */
|
|
||||||
uint32_t state[5]; /*!< intermediate digest state */
|
|
||||||
unsigned char buffer[64]; /*!< data block being processed */
|
|
||||||
}
|
|
||||||
sha1_context;
|
|
||||||
|
|
||||||
/* Implementation that should never be optimized out by the compiler */
|
|
||||||
static void polarssl_zeroize( void *v, size_t n ) {
|
|
||||||
volatile unsigned char *p = (unsigned char *) v; while( n-- ) *p++ = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* 32-bit integer manipulation macros (big endian)
|
|
||||||
*/
|
|
||||||
#ifndef GET_UINT32_BE
|
|
||||||
#define GET_UINT32_BE(n,b,i) \
|
|
||||||
{ \
|
|
||||||
(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
|
|
||||||
| ( (uint32_t) (b)[(i) + 1] << 16 ) \
|
|
||||||
| ( (uint32_t) (b)[(i) + 2] << 8 ) \
|
|
||||||
| ( (uint32_t) (b)[(i) + 3] ); \
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef PUT_UINT32_BE
|
|
||||||
#define PUT_UINT32_BE(n,b,i) \
|
|
||||||
{ \
|
|
||||||
(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
|
|
||||||
(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
|
|
||||||
(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
|
|
||||||
(b)[(i) + 3] = (unsigned char) ( (n) ); \
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
void sha1_init( sha1_context *ctx )
|
|
||||||
{
|
|
||||||
memset( ctx, 0, sizeof( sha1_context ) );
|
|
||||||
}
|
|
||||||
|
|
||||||
void sha1_free( sha1_context *ctx )
|
|
||||||
{
|
|
||||||
if( ctx == NULL )
|
|
||||||
return;
|
|
||||||
|
|
||||||
polarssl_zeroize( ctx, sizeof( sha1_context ) );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* SHA-1 context setup
|
|
||||||
*/
|
|
||||||
void sha1_starts( sha1_context *ctx )
|
|
||||||
{
|
|
||||||
ctx->total[0] = 0;
|
|
||||||
ctx->total[1] = 0;
|
|
||||||
|
|
||||||
ctx->state[0] = 0x67452301;
|
|
||||||
ctx->state[1] = 0xEFCDAB89;
|
|
||||||
ctx->state[2] = 0x98BADCFE;
|
|
||||||
ctx->state[3] = 0x10325476;
|
|
||||||
ctx->state[4] = 0xC3D2E1F0;
|
|
||||||
}
|
|
||||||
|
|
||||||
void sha1_process( sha1_context *ctx, const unsigned char data[64] )
|
|
||||||
{
|
|
||||||
uint32_t temp, W[16], A, B, C, D, E;
|
|
||||||
|
|
||||||
GET_UINT32_BE( W[ 0], data, 0 );
|
|
||||||
GET_UINT32_BE( W[ 1], data, 4 );
|
|
||||||
GET_UINT32_BE( W[ 2], data, 8 );
|
|
||||||
GET_UINT32_BE( W[ 3], data, 12 );
|
|
||||||
GET_UINT32_BE( W[ 4], data, 16 );
|
|
||||||
GET_UINT32_BE( W[ 5], data, 20 );
|
|
||||||
GET_UINT32_BE( W[ 6], data, 24 );
|
|
||||||
GET_UINT32_BE( W[ 7], data, 28 );
|
|
||||||
GET_UINT32_BE( W[ 8], data, 32 );
|
|
||||||
GET_UINT32_BE( W[ 9], data, 36 );
|
|
||||||
GET_UINT32_BE( W[10], data, 40 );
|
|
||||||
GET_UINT32_BE( W[11], data, 44 );
|
|
||||||
GET_UINT32_BE( W[12], data, 48 );
|
|
||||||
GET_UINT32_BE( W[13], data, 52 );
|
|
||||||
GET_UINT32_BE( W[14], data, 56 );
|
|
||||||
GET_UINT32_BE( W[15], data, 60 );
|
|
||||||
|
|
||||||
#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
|
|
||||||
|
|
||||||
#define R(t) \
|
|
||||||
( \
|
|
||||||
temp = W[( t - 3 ) & 0x0F] ^ W[( t - 8 ) & 0x0F] ^ \
|
|
||||||
W[( t - 14 ) & 0x0F] ^ W[ t & 0x0F], \
|
|
||||||
( W[t & 0x0F] = S(temp,1) ) \
|
|
||||||
)
|
|
||||||
|
|
||||||
#define P(a,b,c,d,e,x) \
|
|
||||||
{ \
|
|
||||||
e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \
|
|
||||||
}
|
|
||||||
|
|
||||||
A = ctx->state[0];
|
|
||||||
B = ctx->state[1];
|
|
||||||
C = ctx->state[2];
|
|
||||||
D = ctx->state[3];
|
|
||||||
E = ctx->state[4];
|
|
||||||
|
|
||||||
#define F(x,y,z) (z ^ (x & (y ^ z)))
|
|
||||||
#define K 0x5A827999
|
|
||||||
|
|
||||||
P( A, B, C, D, E, W[0] );
|
|
||||||
P( E, A, B, C, D, W[1] );
|
|
||||||
P( D, E, A, B, C, W[2] );
|
|
||||||
P( C, D, E, A, B, W[3] );
|
|
||||||
P( B, C, D, E, A, W[4] );
|
|
||||||
P( A, B, C, D, E, W[5] );
|
|
||||||
P( E, A, B, C, D, W[6] );
|
|
||||||
P( D, E, A, B, C, W[7] );
|
|
||||||
P( C, D, E, A, B, W[8] );
|
|
||||||
P( B, C, D, E, A, W[9] );
|
|
||||||
P( A, B, C, D, E, W[10] );
|
|
||||||
P( E, A, B, C, D, W[11] );
|
|
||||||
P( D, E, A, B, C, W[12] );
|
|
||||||
P( C, D, E, A, B, W[13] );
|
|
||||||
P( B, C, D, E, A, W[14] );
|
|
||||||
P( A, B, C, D, E, W[15] );
|
|
||||||
P( E, A, B, C, D, R(16) );
|
|
||||||
P( D, E, A, B, C, R(17) );
|
|
||||||
P( C, D, E, A, B, R(18) );
|
|
||||||
P( B, C, D, E, A, R(19) );
|
|
||||||
|
|
||||||
#undef K
|
|
||||||
#undef F
|
|
||||||
|
|
||||||
#define F(x,y,z) (x ^ y ^ z)
|
|
||||||
#define K 0x6ED9EBA1
|
|
||||||
|
|
||||||
P( A, B, C, D, E, R(20) );
|
|
||||||
P( E, A, B, C, D, R(21) );
|
|
||||||
P( D, E, A, B, C, R(22) );
|
|
||||||
P( C, D, E, A, B, R(23) );
|
|
||||||
P( B, C, D, E, A, R(24) );
|
|
||||||
P( A, B, C, D, E, R(25) );
|
|
||||||
P( E, A, B, C, D, R(26) );
|
|
||||||
P( D, E, A, B, C, R(27) );
|
|
||||||
P( C, D, E, A, B, R(28) );
|
|
||||||
P( B, C, D, E, A, R(29) );
|
|
||||||
P( A, B, C, D, E, R(30) );
|
|
||||||
P( E, A, B, C, D, R(31) );
|
|
||||||
P( D, E, A, B, C, R(32) );
|
|
||||||
P( C, D, E, A, B, R(33) );
|
|
||||||
P( B, C, D, E, A, R(34) );
|
|
||||||
P( A, B, C, D, E, R(35) );
|
|
||||||
P( E, A, B, C, D, R(36) );
|
|
||||||
P( D, E, A, B, C, R(37) );
|
|
||||||
P( C, D, E, A, B, R(38) );
|
|
||||||
P( B, C, D, E, A, R(39) );
|
|
||||||
|
|
||||||
#undef K
|
|
||||||
#undef F
|
|
||||||
|
|
||||||
#define F(x,y,z) ((x & y) | (z & (x | y)))
|
|
||||||
#define K 0x8F1BBCDC
|
|
||||||
|
|
||||||
P( A, B, C, D, E, R(40) );
|
|
||||||
P( E, A, B, C, D, R(41) );
|
|
||||||
P( D, E, A, B, C, R(42) );
|
|
||||||
P( C, D, E, A, B, R(43) );
|
|
||||||
P( B, C, D, E, A, R(44) );
|
|
||||||
P( A, B, C, D, E, R(45) );
|
|
||||||
P( E, A, B, C, D, R(46) );
|
|
||||||
P( D, E, A, B, C, R(47) );
|
|
||||||
P( C, D, E, A, B, R(48) );
|
|
||||||
P( B, C, D, E, A, R(49) );
|
|
||||||
P( A, B, C, D, E, R(50) );
|
|
||||||
P( E, A, B, C, D, R(51) );
|
|
||||||
P( D, E, A, B, C, R(52) );
|
|
||||||
P( C, D, E, A, B, R(53) );
|
|
||||||
P( B, C, D, E, A, R(54) );
|
|
||||||
P( A, B, C, D, E, R(55) );
|
|
||||||
P( E, A, B, C, D, R(56) );
|
|
||||||
P( D, E, A, B, C, R(57) );
|
|
||||||
P( C, D, E, A, B, R(58) );
|
|
||||||
P( B, C, D, E, A, R(59) );
|
|
||||||
|
|
||||||
#undef K
|
|
||||||
#undef F
|
|
||||||
|
|
||||||
#define F(x,y,z) (x ^ y ^ z)
|
|
||||||
#define K 0xCA62C1D6
|
|
||||||
|
|
||||||
P( A, B, C, D, E, R(60) );
|
|
||||||
P( E, A, B, C, D, R(61) );
|
|
||||||
P( D, E, A, B, C, R(62) );
|
|
||||||
P( C, D, E, A, B, R(63) );
|
|
||||||
P( B, C, D, E, A, R(64) );
|
|
||||||
P( A, B, C, D, E, R(65) );
|
|
||||||
P( E, A, B, C, D, R(66) );
|
|
||||||
P( D, E, A, B, C, R(67) );
|
|
||||||
P( C, D, E, A, B, R(68) );
|
|
||||||
P( B, C, D, E, A, R(69) );
|
|
||||||
P( A, B, C, D, E, R(70) );
|
|
||||||
P( E, A, B, C, D, R(71) );
|
|
||||||
P( D, E, A, B, C, R(72) );
|
|
||||||
P( C, D, E, A, B, R(73) );
|
|
||||||
P( B, C, D, E, A, R(74) );
|
|
||||||
P( A, B, C, D, E, R(75) );
|
|
||||||
P( E, A, B, C, D, R(76) );
|
|
||||||
P( D, E, A, B, C, R(77) );
|
|
||||||
P( C, D, E, A, B, R(78) );
|
|
||||||
P( B, C, D, E, A, R(79) );
|
|
||||||
|
|
||||||
#undef K
|
|
||||||
#undef F
|
|
||||||
|
|
||||||
ctx->state[0] += A;
|
|
||||||
ctx->state[1] += B;
|
|
||||||
ctx->state[2] += C;
|
|
||||||
ctx->state[3] += D;
|
|
||||||
ctx->state[4] += E;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* SHA-1 process buffer
|
|
||||||
*/
|
|
||||||
void sha1_update( sha1_context *ctx, const unsigned char *input, size_t ilen )
|
|
||||||
{
|
|
||||||
size_t fill;
|
|
||||||
uint32_t left;
|
|
||||||
|
|
||||||
if( ilen == 0 )
|
|
||||||
return;
|
|
||||||
|
|
||||||
left = ctx->total[0] & 0x3F;
|
|
||||||
fill = 64 - left;
|
|
||||||
|
|
||||||
ctx->total[0] += (uint32_t) ilen;
|
|
||||||
ctx->total[0] &= 0xFFFFFFFF;
|
|
||||||
|
|
||||||
if( ctx->total[0] < (uint32_t) ilen )
|
|
||||||
ctx->total[1]++;
|
|
||||||
|
|
||||||
if( left && ilen >= fill )
|
|
||||||
{
|
|
||||||
memcpy( (void *) (ctx->buffer + left), input, fill );
|
|
||||||
sha1_process( ctx, ctx->buffer );
|
|
||||||
input += fill;
|
|
||||||
ilen -= fill;
|
|
||||||
left = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
while( ilen >= 64 )
|
|
||||||
{
|
|
||||||
sha1_process( ctx, input );
|
|
||||||
input += 64;
|
|
||||||
ilen -= 64;
|
|
||||||
}
|
|
||||||
|
|
||||||
if( ilen > 0 )
|
|
||||||
memcpy( (void *) (ctx->buffer + left), input, ilen );
|
|
||||||
}
|
|
||||||
|
|
||||||
static const unsigned char sha1_padding[64] =
|
|
||||||
{
|
|
||||||
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
||||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
||||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
||||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
|
||||||
};
|
|
||||||
|
|
||||||
/*
|
|
||||||
* SHA-1 final digest
|
|
||||||
*/
|
|
||||||
void sha1_finish( sha1_context *ctx, unsigned char output[20] )
|
|
||||||
{
|
|
||||||
uint32_t last, padn;
|
|
||||||
uint32_t high, low;
|
|
||||||
unsigned char msglen[8];
|
|
||||||
|
|
||||||
high = ( ctx->total[0] >> 29 )
|
|
||||||
| ( ctx->total[1] << 3 );
|
|
||||||
low = ( ctx->total[0] << 3 );
|
|
||||||
|
|
||||||
PUT_UINT32_BE( high, msglen, 0 );
|
|
||||||
PUT_UINT32_BE( low, msglen, 4 );
|
|
||||||
|
|
||||||
last = ctx->total[0] & 0x3F;
|
|
||||||
padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
|
|
||||||
|
|
||||||
sha1_update( ctx, sha1_padding, padn );
|
|
||||||
sha1_update( ctx, msglen, 8 );
|
|
||||||
|
|
||||||
PUT_UINT32_BE( ctx->state[0], output, 0 );
|
|
||||||
PUT_UINT32_BE( ctx->state[1], output, 4 );
|
|
||||||
PUT_UINT32_BE( ctx->state[2], output, 8 );
|
|
||||||
PUT_UINT32_BE( ctx->state[3], output, 12 );
|
|
||||||
PUT_UINT32_BE( ctx->state[4], output, 16 );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* output = SHA-1( input buffer )
|
|
||||||
*/
|
|
||||||
void sha1( const unsigned char *input, size_t ilen, unsigned char output[20] )
|
|
||||||
{
|
|
||||||
sha1_context ctx;
|
|
||||||
|
|
||||||
sha1_init( &ctx );
|
|
||||||
sha1_starts( &ctx );
|
|
||||||
sha1_update( &ctx, input, ilen );
|
|
||||||
sha1_finish( &ctx, output );
|
|
||||||
sha1_free( &ctx );
|
|
||||||
}
|
|
||||||
Loading…
x
Reference in New Issue
Block a user