Functions

smdevp.c File Reference

#include "smdevp.h"
Include dependency graph for smdevp.c:

Functions

static int soap_smd_send (struct soap *soap, const char *buf, size_t len)
 Callback to intercept messages for digest or signature computation/verification.
static size_t soap_smd_recv (struct soap *soap, char *buf, size_t len)
 Callback to intercept messages for digest or signature computation/verification.
static int soap_smd_check (struct soap *soap, struct soap_smd_data *data, int err, const char *msg)
 Check result of init/update/final smdevp engine operations.
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. Also deallocates temporary storage allocated by soap_smd_begin(), so MUST be called after soap_smd_begin().
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.

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
static int soap_smd_check ( struct soap *  soap,
struct soap_smd_data data,
int  err,
const char *  msg 
) [static]

Check result of init/update/final smdevp engine operations.

Parameters:
soap context
[in,out] data smdevp engine context
[in] err EVP error value
[in] msg error message
Returns:
SOAP_OK or SOAP_SSL_ERROR
int soap_smd_end ( struct soap *  soap,
char *  buf,
int *  len 
)

Completes a digest or signature computation. Also deallocates temporary storage allocated by soap_smd_begin(), so MUST be called after soap_smd_begin().

Parameters:
soap context
[in] buf contains signature for verification (when using a SOAP_SMD_VRFY algorithm) or NULL for cleanup
[out] buf is populated with the digest or signature with maximum length soap_smd_size(alg, key)
[in] len points to length of signature to verify (when using a SOAP_SMD_VRFY algorithm) or NULL for cleanup
[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
static size_t soap_smd_recv ( struct soap *  soap,
char *  buf,
size_t  len 
) [static]

Callback to intercept messages for digest or signature computation/verification.

Parameters:
soap context
[in] buf buffer
[in] len max buffer length
Returns:
message size in buffer or 0 on error.
static int soap_smd_send ( struct soap *  soap,
const char *  buf,
size_t  len 
) [static]

Callback to intercept messages for digest or signature computation/verification.

Parameters:
soap context
[in] buf message
[in] len message length
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, SOAP_SMD_SHA1_SIZE, SOAP_SMD_SHA256_SIZE, SOAP_SMD_SHA512_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