示例#1
0
文件: dh_ameth.c 项目: Orav/kbengine
static int dh_param_decode(EVP_PKEY *pkey,
                           const unsigned char **pder, int derlen)
{
    DH *dh;
    if (!(dh = d2i_dhp(pkey, pder, derlen))) {
        DHerr(DH_F_DH_PARAM_DECODE, ERR_R_DH_LIB);
        return 0;
    }
    EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, dh);
    return 1;
}
示例#2
0
文件: dh_ameth.c 项目: Orav/kbengine
static int dh_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
{
    const unsigned char *p, *pm;
    int pklen, pmlen;
    int ptype;
    void *pval;
    ASN1_STRING *pstr;
    X509_ALGOR *palg;
    ASN1_INTEGER *public_key = NULL;

    DH *dh = NULL;

    if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
        return 0;
    X509_ALGOR_get0(NULL, &ptype, &pval, palg);

    if (ptype != V_ASN1_SEQUENCE) {
        DHerr(DH_F_DH_PUB_DECODE, DH_R_PARAMETER_ENCODING_ERROR);
        goto err;
    }

    pstr = pval;
    pm = pstr->data;
    pmlen = pstr->length;

    if (!(dh = d2i_dhp(pkey, &pm, pmlen))) {
        DHerr(DH_F_DH_PUB_DECODE, DH_R_DECODE_ERROR);
        goto err;
    }

    if (!(public_key = d2i_ASN1_INTEGER(NULL, &p, pklen))) {
        DHerr(DH_F_DH_PUB_DECODE, DH_R_DECODE_ERROR);
        goto err;
    }

    /* We have parameters now set public key */
    if (!(dh->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) {
        DHerr(DH_F_DH_PUB_DECODE, DH_R_BN_DECODE_ERROR);
        goto err;
    }

    ASN1_INTEGER_free(public_key);
    EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, dh);
    return 1;

 err:
    if (public_key)
        ASN1_INTEGER_free(public_key);
    if (dh)
        DH_free(dh);
    return 0;

}
示例#3
0
static int dh_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
{
    const unsigned char *p, *pm;
    int pklen, pmlen;
    int ptype;
    void *pval;
    ASN1_STRING *pstr;
    X509_ALGOR *palg;
    ASN1_INTEGER *privkey = NULL;

    DH *dh = NULL;

    if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
        return 0;

    X509_ALGOR_get0(NULL, &ptype, &pval, palg);

    if (ptype != V_ASN1_SEQUENCE)
        goto decerr;
    if ((privkey = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL)
        goto decerr;

    pstr = pval;
    pm = pstr->data;
    pmlen = pstr->length;
    if ((dh = d2i_dhp(pkey, &pm, pmlen)) == NULL)
        goto decerr;

    /* We have parameters now set private key */
    if ((dh->priv_key = BN_secure_new()) == NULL
        || !ASN1_INTEGER_to_BN(privkey, dh->priv_key)) {
        DHerr(DH_F_DH_PRIV_DECODE, DH_R_BN_ERROR);
        goto dherr;
    }
    /* Calculate public key */
    if (!DH_generate_key(dh))
        goto dherr;

    EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, dh);

    ASN1_STRING_clear_free(privkey);

    return 1;

 decerr:
    DHerr(DH_F_DH_PRIV_DECODE, EVP_R_DECODE_ERROR);
 dherr:
    DH_free(dh);
    ASN1_STRING_clear_free(privkey);
    return 0;
}