diff options
author | Richard Levitte <levitte@openssl.org> | 2015-12-18 16:37:02 +0100 |
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committer | Richard Levitte <levitte@openssl.org> | 2016-01-12 13:52:22 +0100 |
commit | e79f877333dcdc2ca51442d8339253e29c31a0d6 (patch) | |
tree | 111a3e888f198f68f01cb03e27bd7842afdf5f35 /include | |
parent | 480d33237df3894ea8df6f2a2e2076fa30efb205 (diff) | |
download | openssl-e79f877333dcdc2ca51442d8339253e29c31a0d6.tar.gz |
Make EVP_CIPHER opaque and add creator/destructor/accessor/writer functions
We follow the method used for EVP_MD.
Also, move all the internal EVP_CIPHER building macros from evp_locl.h
to evp_int.h. This will benefit our builtin EVP_CIPHERs.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/openssl/evp.h | 75 |
1 files changed, 47 insertions, 28 deletions
diff --git a/include/openssl/evp.h b/include/openssl/evp.h index c6a4580e68..df57fb2e71 100644 --- a/include/openssl/evp.h +++ b/include/openssl/evp.h @@ -224,7 +224,7 @@ int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd, # define EVP_MD_CTX_FLAG_CLEANED 0x0002/* context has already been * cleaned */ # define EVP_MD_CTX_FLAG_REUSE 0x0004/* Don't free up ctx->md_data - * in EVP_MD_CTX_cleanup */ + * in EVP_MD_CTX_reset */ /* * FIPS and pad options are ignored in 1.0.0, definitions are here so we * don't accidentally reuse the values for other purposes. @@ -252,33 +252,51 @@ int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd, */ # define EVP_MD_CTX_FLAG_FINALISE 0x0200 -struct evp_cipher_st { - int nid; - int block_size; - /* Default value for variable length ciphers */ - int key_len; - int iv_len; - /* Various flags */ - unsigned long flags; - /* init key */ - int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc); - /* encrypt/decrypt data */ - int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl); - /* cleanup ctx */ - int (*cleanup) (EVP_CIPHER_CTX *); - /* how big ctx->cipher_data needs to be */ - int ctx_size; - /* Populate a ASN1_TYPE with parameters */ - int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *); - /* Get parameters from a ASN1_TYPE */ - int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *); - /* Miscellaneous operations */ - int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr); - /* Application data */ - void *app_data; -} /* EVP_CIPHER */ ; +EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len); +EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher); +void EVP_CIPHER_meth_free(EVP_CIPHER *cipher); + +int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len); +int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags); +int EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size); +int EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher, + int (*init) (EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, + int enc)); +int EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher, + int (*do_cipher) (EVP_CIPHER_CTX *ctx, + unsigned char *out, + const unsigned char *in, + size_t inl)); +int EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher, + int (*cleanup) (EVP_CIPHER_CTX *)); +int EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher, + int (*set_asn1_parameters) (EVP_CIPHER_CTX *, + ASN1_TYPE *)); +int EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher, + int (*get_asn1_parameters) (EVP_CIPHER_CTX *, + ASN1_TYPE *)); +int EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher, + int (*ctrl) (EVP_CIPHER_CTX *, int type, + int arg, void *ptr)); + +int (*EVP_CIPHER_meth_get_init(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, + int enc); +int (*EVP_CIPHER_meth_get_do_cipher(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx, + unsigned char *out, + const unsigned char *in, + size_t inl); +int (*EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *); +int (*EVP_CIPHER_meth_get_set_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *, + ASN1_TYPE *); +int (*EVP_CIPHER_meth_get_get_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *, + ASN1_TYPE *); +int (*EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *, + int type, int arg, + void *ptr); /* Values for cipher flags */ @@ -503,6 +521,7 @@ void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx); int EVP_CIPHER_nid(const EVP_CIPHER *cipher); # define EVP_CIPHER_name(e) OBJ_nid2sn(EVP_CIPHER_nid(e)) int EVP_CIPHER_block_size(const EVP_CIPHER *cipher); +int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *cipher); int EVP_CIPHER_key_length(const EVP_CIPHER *cipher); int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher); unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher); |