export_import_tr31.c

Ejemplo de exportación e importación en formato TR-31.

Véase la nota sobre ejemplos.

#include <string.h>
#include <stdlib.h>
#include <stdio.h>
 
#include <dinamo.h> /* header do Dinamo */
 
#define HOST_ADDR       "127.0.0.1"
#define USER_ID         "master"
#define USER_PWD        "12345678"
 
int main()
{
    int nRet = 0;
    struct AUTH_PWD authPwd;
    HSESSIONCTX hSession = NULL;
 
    HKEYCTX hKbpk = NULL;
    HKEYCTX hKey = NULL;
 
    char szKbpk[]   = "kbpk";
    char szKey[]    = "key";
    char szImpKey[] = "impKey";
 
    //Inicializa as bibliotecas do Dinamo
    nRet = DInitialize(0);
 
    if (nRet) {
        printf("Falha na funcao: DInitialize \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Bibliotecas inicializadas.\n");
 
    //Inicializa a estrutura para conexão com o HSM
    strncpy(authPwd.szAddr, HOST_ADDR, sizeof(authPwd.szAddr));
    authPwd.nPort = DEFAULT_PORT;
    strncpy(authPwd.szUserId, USER_ID, sizeof(authPwd.szUserId));
    strncpy(authPwd.szPassword, USER_PWD, sizeof(authPwd.szPassword));
 
    nRet = DOpenSession(&hSession, SS_USER_PWD, (BYTE *)&authPwd, sizeof(authPwd), ENCRYPTED_CONN);
 
    if (nRet) {
        printf("Falha na funcao: DOpenSession \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Sessao com o Dinamo estabelecida.\n");
 
    /*
        Cria chaves de teste
    */
 
    nRet = DGenerateKey(hSession, szKbpk, ALG_AES_256, EXPORTABLE_KEY, &hKbpk);
    if (nRet)
    {
        printf("Falha na funcao: DGenerateKey \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    nRet = DGenerateKey(hSession, szKey, ALG_AES_128, EXPORTABLE_KEY, &hKey);
    if (nRet)
    {
        printf("Falha na funcao: DGenerateKey \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    /*
     * Exporta uma chave no formato TR-31.
     */
 
    BYTE *pbKeyBlock = NULL;
    DWORD dwKeyBlockLen = 0;
    nRet = DEFTExportTR31(hSession, szKbpk, szKey, NULL,
                          EFT_ME_TR31_EXP_USAGE_AUTO, EFT_ME_TR31_EXP_MODE_AUTO,
                          EFT_ME_TR31_EXP_AUTO, NULL,&dwKeyBlockLen, 0);
 
    pbKeyBlock = malloc(dwKeyBlockLen);
    if(pbKeyBlock == NULL)
    {
        printf("Falha ao alocar memoria\n");
        goto clean;
    }
 
    nRet = DEFTExportTR31(hSession, szKbpk, szKey, NULL,
                          EFT_ME_TR31_EXP_USAGE_AUTO, EFT_ME_TR31_EXP_MODE_AUTO,
                          EFT_ME_TR31_EXP_AUTO, pbKeyBlock, &dwKeyBlockLen, 0);
    if (nRet) {
        printf("Falha na funcao: DEFTExportTR31 \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Chave exportada com sucesso.\n");
 
    /*
     * Importa uma chave no formato TR-31.
     */
 
    nRet = DEFTImportTR31(hSession, szKbpk, szImpKey, EXPORTABLE_KEY, pbKeyBlock,
                          dwKeyBlockLen, 0);
    if (nRet)
    {
        printf("Falha na funcao: DEFTImportTR31 \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Chave importada com sucesso.\n");
 
clean:
 
    if (hSession) {
        DCloseSession(&hSession, 0);
        printf("Sessao encerrada.\n");
    }
 
    free(pbKeyBlock);
 
    DFinalize();
    printf("Bibliotecas finalizada.\n");
 
    return nRet;
}