sys/dh: add EVP_PKEY_CTX set dh prime_len & generator

Author: huwcbjones

openssl-sys/src/dh.rs

@@ -0,0 +1,32 @@
+use libc::*;
+use std::ptr;
+
+use super::super::*;
+
+cfg_if! {
+    if #[cfg(not(ossl300))] {
+        pub unsafe fn EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx: *mut EVP_PKEY_CTX, len: c_int) -> c_int {
+            EVP_PKEY_CTX_ctrl(
+                ctx,
+                EVP_PKEY_DH,
+                EVP_PKEY_OP_PARAMGEN,
+                EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN,
+                len,
+                ptr::null_mut(),
+            )
+        }
+        pub unsafe fn EVP_PKEY_CTX_set_dh_paramgen_generator(ctx: *mut EVP_PKEY_CTX, gen: c_int) -> c_int {
+            EVP_PKEY_CTX_ctrl(
+                ctx,
+                EVP_PKEY_DH,
+                EVP_PKEY_OP_PARAMGEN,
+                EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR,
+                gen,
+                ptr::null_mut(),
+            )
+        }
+    }
+}
+
+pub const EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN: c_int = EVP_PKEY_ALG_CTRL + 1;
+pub const EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR: c_int = EVP_PKEY_ALG_CTRL + 2;

openssl-sys/src/handwritten/dh.rs

@@ -1,5 +1,11 @@
 use super::super::*;
 
+#[cfg(ossl300)]
+extern "C" {
+    pub fn EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx: *mut EVP_PKEY_CTX, len: c_int) -> c_int;
+    pub fn EVP_PKEY_CTX_set_dh_paramgen_generator(ctx: *mut EVP_PKEY_CTX, gen: c_int) -> c_int;
+}
+
 extern "C" {
     pub fn DH_new() -> *mut DH;
     pub fn DH_free(dh: *mut DH);

openssl-sys/src/lib.rs

@@ -73,6 +73,7 @@ mod openssl {
     pub use self::bn::*;
     pub use self::cms::*;
     pub use self::crypto::*;
+    pub use self::dh::*;
     pub use self::dsa::*;
     pub use self::dtls1::*;
     pub use self::ec::*;
@@ -104,6 +105,7 @@ mod openssl {
     mod bn;
     mod cms;
     mod crypto;
+    mod dh;
     mod dsa;
     mod dtls1;
     mod ec;