/**
@fn int soap_mec_begin(struct soap *soap, struct soap_mec_data *data, int alg, SOAP_MEC_KEY_TYPE *pkey, unsigned char *key, int *keylen)
@brief Initialize the mecevp engine data and begin encryption or decryption
message sequence using a private/public key or symmetric secret key.
@param soap context
@param[in,out] data mecevp engine context
@param[in] alg encryption/decryption algorithm
@param[in] pkey public/private key or NULL
@param[in,out] key secret key or encrypted ephemeral secret key set with envelope encryption, or NULL
@param[in,out] keylen secret key length
@return SOAP_OK or error code
*/
int
soap_mec_begin(struct soap *soap, struct soap_mec_data *data, int alg, SOAP_MEC_KEY_TYPE *pkey, unsigned char *key, int *keylen)
{ DBGLOG(TEST, SOAP_MESSAGE(fdebug, "MEC Begin alg=%x\n", alg));
/* save and set the engine's 'data' field to pass data to the callbacks */
soap->data[1] = (void*)data;
data->ctx = NULL;
data->type = EVP_enc_null();
data->pkey = NULL;
data->key = NULL;
data->buf = NULL;
/* save the mode flag */
data->mode = soap->mode;
if (alg & SOAP_MEC_ENC)
{ /* clear the IO flags and DOM flag */
soap->mode &= ~(SOAP_IO | SOAP_IO_LENGTH | SOAP_ENC_ZLIB | SOAP_XML_DOM);
/* clear the XML attribute store */
soap_clr_attr(soap);
/* load the local XML namespaces store */
soap_set_local_namespaces(soap);
if (soap->mode & SOAP_XML_CANONICAL)
soap->ns = 0; /* for in c14n, we must have all xmlns bindings available */
}
else
{ /* save and override the callbacks */
data->ffilterrecv = soap->ffilterrecv;
soap->ffilterrecv = soap_mec_filterrecv;
}
/* init the soap_mec engine */
return soap_mec_init(soap, data, alg, pkey, key, keylen);
}
/**
@fn int soap_smd_begin(struct soap *soap, int alg, const void *key, int keylen)
@brief Initiates a digest or signature computation.
@param soap context
@param[in] alg is the digest or signature (sign/verification) algorithm used
@param[in] key is a HMAC key or pointer to EVP_PKEY object or NULL for digests
@param[in] keylen is the length of the HMAC key or 0
@return SOAP_OK, SOAP_EOM, or SOAP_SSL_ERROR
*/
int
soap_smd_begin(struct soap *soap, int alg, const void *key, int keylen)
{ struct soap_smd_data *data;
data = (struct soap_smd_data*)SOAP_MALLOC(soap, sizeof(struct soap_smd_data));
if (!data)
return soap->error = SOAP_EOM;
/* save and set the engine's 'data' field to pass data to the callbacks */
soap->data[0] = (void*)data;
/* save and override the send and recv callbacks */
data->fsend = soap->fsend;
data->frecv = soap->frecv;
soap->fsend = soap_smd_send;
soap->frecv = soap_smd_recv;
/* save the mode flag */
data->mode = soap->mode;
/* clear the IO flags and DOM flag */
soap->mode &= ~(SOAP_IO | SOAP_IO_LENGTH | SOAP_ENC_ZLIB | SOAP_XML_DOM);
/* clear the XML attribute store */
soap_clr_attr(soap);
/* load the local XML namespaces store */
soap_set_local_namespaces(soap);
if (soap->mode & SOAP_XML_CANONICAL)
soap->ns = 0; /* for in c14n, we must have all xmlns bindings available */
else if (!(alg & SOAP_SMD_PASSTHRU))
soap->ns = 2; /* we don't want leading whitespace in serialized XML */
/* init the soap_smd engine */
return soap_smd_init(soap, data, alg, key, keylen);
}