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RSA_METH_NEW(3) Library Functions Manual RSA_METH_NEW(3)

RSA_meth_new, RSA_meth_dup, RSA_meth_free, RSA_meth_get_finish, RSA_meth_set1_name, RSA_meth_set_finish, RSA_meth_set_priv_enc, RSA_meth_set_priv_decbuild up RSA methods

#include <openssl/rsa.h>

RSA_METHOD *
RSA_meth_new(const char *name, int flags);

RSA_METHOD *
RSA_meth_dup(const RSA_METHOD *meth);

void
RSA_meth_free(RSA_METHOD *meth);

int
RSA_meth_set1_name(RSA_METHOD *meth, const char *name);

int
(*RSA_meth_get_finish(const RSA_METHOD *meth))(RSA *rsa);

int
RSA_meth_set_finish(RSA_METHOD *meth, int (*finish)(RSA *rsa));

int
RSA_meth_set_priv_enc(RSA_METHOD *meth, int (*priv_enc)(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding));

int
RSA_meth_set_priv_dec(RSA_METHOD *meth, int (*priv_dec)(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding));

The RSA_METHOD structure holds function pointers for custom RSA implementations.

() creates a new RSA_METHOD structure. A copy of the NUL-terminated name is stored in the new RSA_METHOD object. Any new RSA object constructed from this RSA_METHOD will have the given flags set by default.

() creates a deep copy of meth. This might be useful for creating a new RSA_METHOD based on an existing one, but with some differences.

() destroys meth and frees any memory associated with it.

() Stores a copy of the NUL-terminated name in the RSA_METHOD object after freeing the previously stored name.

() and () get and set an optional function for destroying an RSA object. Unless finish is NULL, it will be called from RSA_free(3). It takes the same argument and is intended to do RSA implementation specific cleanup. The memory used by the RSA object itself should not be freed by the finish function.

() and () set the functions used for private key encryption and decryption. These functions will be called from RSA_private_decrypt(3) and RSA_private_encrypt(3) and take the same parameters as those.

RSA_meth_new() and RSA_meth_dup() return the newly allocated RSA_METHOD object or NULL on failure.

All RSA_meth_set*() functions return 1 on success or 0 on failure.

RSA_new(3), RSA_private_decrypt(3), RSA_private_encrypt(3), RSA_set_method(3)

These functions first appeared in OpenSSL 1.1.0. RSA_meth_get_finish() and RSA_meth_set1_name() have been available since OpenBSD 6.4, all the other functions since OpenBSD 6.3.

September 12, 2018 DragonFly-5.6.1