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# /Users/engelen/Projects/gsoap/plugin/smdevp.h File Reference

`#include "stdsoap2.h"`

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## Classes
struct | soap_smd_data
| The smdevp engine context data. More...
## Defines
#define | SOAP_SMD_KEY_TYPE EVP_PKEY
#define | SOAP_SMD_MAX_SIZE EVP_MAX_MD_SIZE
#define | SOAP_SMD_MD5_SIZE (16)
#define | SOAP_SMD_SHA1_SIZE (20)
#define | SOAP_SMD_NONE (0)
#define | SOAP_SMD_DGST_MD5 (1)
#define | SOAP_SMD_DGST_SHA1 (2)
#define | SOAP_SMD_HMAC_SHA1 (3)
#define | SOAP_SMD_SIGN_DSA_SHA1 (4)
#define | SOAP_SMD_SIGN_RSA_SHA1 (5)
#define | SOAP_SMD_VRFY_DSA_SHA1 (6)
#define | SOAP_SMD_VRFY_RSA_SHA1 (7)
## Functions
size_t | soap_smd_size (int alg, const void *key)
| Returns the number of octets needed to store the digest or signature returned by soap_smd_end.
int | soap_smd_begin (struct soap *soap, int alg, const void *key, int keylen)
| Initiates a digest or signature computation.
int | soap_smd_end (struct soap *soap, char *buf, int *len)
| Completes a digest or signature computation.
int | soap_smd_init (struct soap *soap, struct soap_smd_data *data, int alg, const void *key, int keylen)
| Initiates a (signed) digest computation.
int | soap_smd_update (struct soap *soap, struct soap_smd_data *data, const char *buf, size_t len)
| Updates (signed) digest computation with message part.
int | soap_smd_final (struct soap *soap, struct soap_smd_data *data, char *buf, int *len)
| Finalizes (signed) digest computation and returns digest or signature.

## Define Documentation

#define SOAP_SMD_DGST_MD5 (1)

| MD5 digest algorithm

#define SOAP_SMD_DGST_SHA1 (2)

| SHA1 digest algorithm

#define SOAP_SMD_HMAC_SHA1 (3)

| HMAC-SHA1 shared key signature algorithm

#define SOAP_SMD_KEY_TYPE EVP_PKEY

| Expose EVP_PKEY in a portable representation

#define SOAP_SMD_MAX_SIZE EVP_MAX_MD_SIZE

| Expose EVP_MAX_MD_SIZE in a portable representation

#define SOAP_SMD_MD5_SIZE (16)

| MD5 digest size in octets

#define SOAP_SMD_NONE (0)

#define SOAP_SMD_SHA1_SIZE (20)

| SHA1 digest size in octets

#define SOAP_SMD_SIGN_DSA_SHA1 (4)

| DSA-SHA1 secret key signature algorithm

#define SOAP_SMD_SIGN_RSA_SHA1 (5)

| RSA-SHA1 secret key signature algorithm

#define SOAP_SMD_VRFY_DSA_SHA1 (6)

| DSA-SHA1 secret key signature verification algorithm

#define SOAP_SMD_VRFY_RSA_SHA1 (7)

| RSA-SHA1 secret key signature verification algorithm

## Function Documentation

int soap_smd_begin | ( | struct soap * | soap,
|  | int | alg,
|  | const void * | key,
|  | int | keylen
| ) |

  | Initiates a digest or signature computation. Parameters:
  | soap | context
  `[in]` | alg | is the digest or signature (sign/verification) algorithm used
  `[in]` | key | is a HMAC key or pointer to EVP_PKEY object or NULL for digests
  `[in]` | keylen | is the length of the HMAC key or 0
Returns: SOAP_OK, SOAP_EOM, or SOAP_SSL_ERROR

int soap_smd_end | ( | struct soap * | soap,
|  | char * | buf,
|  | int * | len
| ) |

  | Completes a digest or signature computation. Parameters:
  | soap | context
  `[in]` | buf | contains signature for verification (when using a SOAP_SMD_VRFY algorithm)
  `[out]` | buf | is populated with the digest or signature
  `[in]` | len | points to length of signature to verify (when using a SOAP_SMD_VRFY algorithm)
  `[out]` | len | points to length of stored digest or signature (when not NULL)
Returns: SOAP_OK, SOAP_USER_ERROR, or SOAP_SSL_ERROR

int soap_smd_final | ( | struct soap * | soap,
|  | struct soap_smd_data * | data,
|  | char * | buf,
|  | int * | len
| ) |

  | Finalizes (signed) digest computation and returns digest or signature. Parameters:
  | soap | context
  `[in,out]` | data | smdevp engine context
  `[in]` | buf | contains signature for verification (SOAP_SMD_VRFY algorithms)
  `[out]` | buf | is populated with the digest or signature
  `[in]` | len | points to length of signature to verify (SOAP_SMD_VRFY algorithms)
  `[out]` | len | points to length of stored digest or signature (pass NULL if you are not interested in this value)
Returns: SOAP_OK or SOAP_SSL_ERROR

int soap_smd_init | ( | struct soap * | soap,
|  | struct soap_smd_data * | data,
|  | int | alg,
|  | const void * | key,
|  | int | keylen
| ) |

  | Initiates a (signed) digest computation. Parameters:
  | soap | context
  `[in,out]` | data | smdevp engine context
  `[in]` | alg | is algorithm to use
  `[in]` | key | is key to use or NULL for digests
  `[in]` | keylen | is length of HMAC key (when provided)
Returns: SOAP_OK or SOAP_SSL_ERROR

size_t soap_smd_size | ( | int | alg,
|  | const void * | key
| ) |

  | Returns the number of octets needed to store the digest or signature returned by soap_smd_end. Parameters:
  `[in]` | alg | is the digest or signature algorithm to be used
  `[in]` | key | is a pointer to an EVP_PKEY object for RSA/DSA signatures or NULL for digests and HMAC
Returns: size_t number of octets that is needed to hold digest or signature See also: soap_smd_end The values returned for digests are SOAP_SMD_MD5_SIZE and SOAP_SMD_SHA1_SIZE.

int soap_smd_update | ( | struct soap * | soap,
|  | struct soap_smd_data * | data,
|  | const char * | buf,
|  | size_t | len
| ) |

  | Updates (signed) digest computation with message part. Parameters:
  | soap | context
  `[in,out]` | data | smdevp engine context
  `[in]` | buf | contains message part
  `[in]` | len | of message part
Returns: SOAP_OK or SOAP_SSL_ERROR