-int EVP_OpenInit(ctx,type,ek,ekl,iv,priv)
-EVP_CIPHER_CTX *ctx;
-EVP_CIPHER *type;
-unsigned char *ek;
-int ekl;
-unsigned char *iv;
-EVP_PKEY *priv;
+int EVP_OpenInit(EVP_CIPHER_CTX *ctx, EVP_CIPHER *type, unsigned char *ek,
+ int ekl, unsigned char *iv, EVP_PKEY *priv)