NAME

DSA_set_default_method, DSA_get_default_method, DSA_set_method, DSA_new_method, DSA_OpenSSL - select DSA method

SYNOPSIS

 #include <openssl/dsa.h>

The following functions have been deprecated since OpenSSL 3.0, and can be hidden entirely by defining OPENSSL_API_COMPAT with a suitable version value, see openssl_user_macros(7):

 void DSA_set_default_method(const DSA_METHOD *meth);

 const DSA_METHOD *DSA_get_default_method(void);

 int DSA_set_method(DSA *dsa, const DSA_METHOD *meth);

 DSA *DSA_new_method(ENGINE *engine);

 const DSA_METHOD *DSA_OpenSSL(void);

DESCRIPTION

All of the functions described on this page are deprecated. Applications should providers instead of method overrides.

A DSA_METHOD specifies the functions that OpenSSL uses for DSA operations. By modifying the method, alternative implementations such as hardware accelerators may be used.

Initially, the default DSA_METHOD is the OpenSSL internal implementation, as returned by DSA_OpenSSL().

DSA_set_default_method() makes meth the default method for all DSA structures created later. NB: This function is not thread-safe and should not be called at the same time as other OpenSSL functions.

DSA_get_default_method() returns a pointer to the current default DSA_METHOD.

DSA_set_method() selects meth to perform all operations using the key dsa. This will replace the DSA_METHOD used by the DSA key. It is possible to have DSA keys that only work with certain DSA_METHOD implementations, and in such cases attempting to change the DSA_METHOD for the key can have unexpected results. See DSA_meth_new(3) for information on constructing custom DSA_METHOD objects.

DSA_new_method() allocates and initializes a DSA structure so that the DSA_METHOD controlled by DSA_set_default_method() is used. engine must be NULL.

RETURN VALUES

DSA_OpenSSL() and DSA_get_default_method() return pointers to the respective DSA_METHODs.

DSA_set_default_method() returns no value.

DSA_set_method() returns nonzero if the provided meth was successfully set as the method for dsa.

DSA_new_method() returns NULL and sets an error code that can be obtained by ERR_get_error(3) if the allocation fails. Otherwise it returns a pointer to the newly allocated structure.

HISTORY

All of these functions were deprecated in OpenSSL 3.0.

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