C++ (Cpp) M_EVP_MD_CTX_set_flags Examples

Example #1

File: verificador.cpp Project: marianoheller/itni_crypto

bool Verificador::verificarFirma(ParDeClaves& parDeClaves,const std::string& firma,std::istream& mensaje){
    RSA* rsa = parDeClaves;

    EVP_PKEY* pk = EVP_PKEY_new();
    EVP_MD_CTX ctx;

    EVP_PKEY_set1_RSA(pk,parDeClaves);

    EVP_MD_CTX_init(&ctx);
    M_EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_PAD_PKCS1/*EVP_MD_CTX_FLAG_PAD_X931*/);
    EVP_VerifyInit_ex(&ctx, EVP_get_digestbynid(NID_sha1), NULL);

    while(!mensaje.eof()){
        unsigned char buffer[tamanio_de_buffer_default];
        mensaje.read((char*)buffer,tamanio_de_buffer_default);
        EVP_VerifyUpdate(&ctx, buffer, mensaje.gcount());
        mensaje.peek();
    }

    int ok = EVP_VerifyFinal(&ctx, (unsigned char*)firma.c_str(), firma.size(), pk);
    EVP_MD_CTX_cleanup(&ctx);

    // El free esta en el constructor de ParDeClaves no puede
    // liberarse aca
    //FIPS_rsa_free(pk.pkey.rsa);

    EVP_PKEY_free(pk);

    return ok==1;
}

Example #2

File: openssl_evp.c Project: runner-mei/bsnmpclient

/* The caller can assume that this removes any secret data from the context */
int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) {
    int ret;

    assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
    ret=ctx->digest->final(ctx,md);
    if (size != NULL)
        *size=ctx->digest->md_size;
    if (ctx->digest->cleanup) {
        ctx->digest->cleanup(ctx);
        M_EVP_MD_CTX_set_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
    }
    memset(ctx->md_data,0,ctx->digest->ctx_size);

    EVP_MD_CTX_cleanup(ctx);
    return ret;
}

Example #3

File: hmac.c Project: VaryJames/Sample

void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
{
    M_EVP_MD_CTX_set_flags(&ctx->i_ctx, flags);
    M_EVP_MD_CTX_set_flags(&ctx->o_ctx, flags);
    M_EVP_MD_CTX_set_flags(&ctx->md_ctx, flags);
}