Question

我尝试使用mbedTLS实现AES-CMAC。我收到一些错误：

对mbedtls_cipher_cmac_starts的未定义引用，对mbedtls_cipher_cmac_update的未定义引用，对mbedtls_cipher_cmac_finish的未定义引用，

为什么即使mbedtls_cipher_init和mbedtls_cipher_setup可以解决这些功能呢？

顺便说一句。我使用mbedTLS在同一个项目下实现了AES，没有任何问题。我使用Eclipse Nano。

这是我的代码：

#include "stdio.h"
#include "stdlib.h"
#include "string.h"
#include "openssl/evp.h"
#include "openssl/cmac.h"
#include "mbedtls/cmac.h"
#include "mbedtls/cipher.h"
using namespace std;
unsigned char key[16]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

int main()
{
    unsigned char m[100],m_len=32;
    unsigned char out[16],out1[16],out2[16];
    size_t d_len;

    int i,ret;
    mbedtls_cipher_context_t m_ctx;
    const mbedtls_cipher_info_t *cipher_info;
    cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_CBC );
    if(cipher_info==NULL)
        printf("\nmbedtls_cipher_info_from_type failed");

    mbedtls_cipher_init(&m_ctx);

    ret=mbedtls_cipher_setup( &m_ctx, cipher_info );
    printf("\n mbedtls_cipher_setup returned %d %d",ret,     m_ctx.cipher_info->type);



    ret=mbedtls_cipher_cmac_starts(&m_ctx,key,128);
    printf("\n mbedtls_cipher_cmac_starts returned %d",ret);

    ret= mbedtls_cipher_cmac_update(&m_ctx, m,m_len);
    printf("\n mbedtls_cipher_cmac_update returned %d",ret);

    ret=mbedtls_cipher_cmac_finish(&m_ctx,out1);
    printf("\n mbedtls_cipher_cmac_starts returned %d",ret);
    d_len=16;
    printf("\nLength is %d\n",(int)d_len);
    for(i=0;i<d_len;i++)
    {
        printf("%x ",out1[i]);
    }


    return 0;

}

Answer 1

无论出于何种原因，default configuration都禁用了CMAC。如果找到其他加密函数，而不是CMAC函数，这必须是因为CMAC函数没有包含在您的构建中。

修改import java.awt.*; import java.util.*; public class Circles { public static final Scanner CONSOLE = new Scanner(System.in); public static void blueCircle(Graphics g) { g.setColor(Color.BLUE); int r = CONSOLE.nextInt(); int x = CONSOLE.nextInt(); int y = CONSOLE.nextInt(); g.fillOval(0 + x, 0 + y, r * 2, r * 2); } public static void greenCircle(Graphics g) { g.setColor(Color.GREEN); int r = CONSOLE.nextInt(); int x = CONSOLE.nextInt(); int y = CONSOLE.nextInt(); g.fillOval(0 + x, 0 + y, r * 2, r * 2); } public static void redCircle(Graphics g) { g.setColor(Color.RED); int r = CONSOLE.nextInt(); int x = CONSOLE.nextInt(); int y = CONSOLE.nextInt(); g.fillOval(0 + x, 0 + y, r * 2, r * 2); } public static void compareCircles(int r1, int r2) { int x; if (r1 < r2) x = -1; if (r1 == r2) x = 0; if (r1 > r2) x = 1; return; } public static void main(String[] args) { DrawingPanel panel = new DrawingPanel(400, 300); Graphics g = panel.getGraphics(); System.out.println("Enter values for the radius, x , & y-coordinates of blue circle: "); blueCircle(g); System.out.println("Enter values for the radius, x , & y-coordinates of green circle: "); greenCircle(g); System.out.println("Enter values for the radius, x , & y-coordinates of red circle: "); redCircle(g); } }以取消注释config.h并重建库。

使用mbedtls的AES-CMAC：未定义的引用错误

1 个答案: