-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);