- /* int set_asn1_parameters(EVP_CIPHER_CTX,ASN1_TYPE *); */
- int (*set_asn1_parameters)(); /* Populate a ASN1_TYPE with parameters */
- /* int get_asn1_parameters(EVP_CIPHER_CTX,ASN1_TYPE *); */
- int (*get_asn1_parameters)(); /* Get parameters from a ASN1_TYPE */
- } EVP_CIPHER;
+ int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Populate a ASN1_TYPE with parameters */
+ int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Get parameters from a ASN1_TYPE */
+ int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr); /* Miscellaneous operations */
+ void *app_data; /* Application data */
+ };
+
+/* Values for cipher flags */
+
+/* Modes for ciphers */
+
+#define EVP_CIPH_STREAM_CIPHER 0x0
+#define EVP_CIPH_ECB_MODE 0x1
+#define EVP_CIPH_CBC_MODE 0x2
+#define EVP_CIPH_CFB_MODE 0x3
+#define EVP_CIPH_OFB_MODE 0x4
+#define EVP_CIPH_MODE 0x7
+/* Set if variable length cipher */
+#define EVP_CIPH_VARIABLE_LENGTH 0x8
+/* Set if the iv handling should be done by the cipher itself */
+#define EVP_CIPH_CUSTOM_IV 0x10
+/* Set if the cipher's init() function should be called if key is NULL */
+#define EVP_CIPH_ALWAYS_CALL_INIT 0x20
+/* Call ctrl() to init cipher parameters */
+#define EVP_CIPH_CTRL_INIT 0x40
+/* Don't use standard key length function */
+#define EVP_CIPH_CUSTOM_KEY_LENGTH 0x80
+
+/* ctrl() values */
+
+#define EVP_CTRL_INIT 0x0
+#define EVP_CTRL_SET_KEY_LENGTH 0x1
+#define EVP_CTRL_GET_RC2_KEY_BITS 0x2
+#define EVP_CTRL_SET_RC2_KEY_BITS 0x3
+#define EVP_CTRL_GET_RC5_ROUNDS 0x4
+#define EVP_CTRL_SET_RC5_ROUNDS 0x5