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Make the definition of EVP_MD opaque

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This moves the definition to crypto/include/internal/evp_int.h and
defines all the necessary method creators, destructors, writers and
accessors.  The name standard for the latter is inspired from the
corresponding functions to manipulate UI methods.

Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Richard Levitte
2015-11-29 20:09:34 +01:00
parent 6e59a892db
commit 2db6bf6f85
4 changed files with 178 additions and 15 deletions
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50
include/openssl/evp.h
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@@ -148,21 +148,41 @@ struct evp_pkey_st {
# define EVP_PKEY_MO_DECRYPT 0x0008
# ifndef EVP_MD
struct evp_md_st {
int type;
int pkey_type;
int md_size;
unsigned long flags;
int (*init) (EVP_MD_CTX *ctx);
int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
int (*cleanup) (EVP_MD_CTX *ctx);
int block_size;
int ctx_size; /* how big does the ctx->md_data need to be */
/* control function */
int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
} /* EVP_MD */ ;
EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type);
EVP_MD *EVP_MD_meth_dup(const EVP_MD *md);
void EVP_MD_meth_free(EVP_MD *md);
int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize);
int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize);
int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize);
int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags);
int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
const void *data,
size_t count));
int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
unsigned char *md));
int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
const EVP_MD_CTX *from));
int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
int p1, void *p2));
int EVP_MD_meth_get_input_blocksize(const EVP_MD *md);
int EVP_MD_meth_get_result_size(const EVP_MD *md);
int EVP_MD_meth_get_app_datasize(const EVP_MD *md);
unsigned long EVP_MD_meth_get_flags(const EVP_MD *md);
int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx);
int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
const void *data,
size_t count);
int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
unsigned char *md);
int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
const EVP_MD_CTX *from);
int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx);
int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
int p1, void *p2);
/* digest can only handle a single block */
# define EVP_MD_FLAG_ONESHOT 0x0001