From ba349b1a8751d6830fdeace466909d2cc6178cd1 Mon Sep 17 00:00:00 2001
From: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Date: Sat, 3 Jul 2010 10:37:45 +0200
Subject: Allow encryption and decryption that are not in-place only.

---
 lib/crypto-api.c             | 46 ++++++++++++++++++++++++++++++++++++++++++++
 lib/gnutls_cipher_int.c      | 21 ++++++++++++++++++++
 lib/gnutls_cipher_int.h      |  4 ++++
 lib/includes/gnutls/crypto.h |  5 +++++
 lib/libgnutls.map            |  2 ++
 5 files changed, 78 insertions(+)

diff --git a/lib/crypto-api.c b/lib/crypto-api.c
index cad9914132..1e61e4181b 100644
--- a/lib/crypto-api.c
+++ b/lib/crypto-api.c
@@ -101,6 +101,52 @@ gnutls_cipher_decrypt (gnutls_cipher_hd_t handle, void *ciphertext,
 				 ciphertextlen);
 }
 
+/**
+ * gnutls_cipher_encrypt2:
+ * @handle: is a #gnutls_cipher_hd_t structure.
+ * @text: the data to encrypt
+ * @textlen: The length of data to encrypt
+ * @ciphertext: the encrypted data
+ * @ciphertextlen: The available length for encrypted data
+ *
+ * This function will encrypt the given data using the algorithm
+ * specified by the context.
+ *
+ * Returns: Zero or a negative value on error.
+ *
+ * Since: 2.10.0
+ **/
+int
+gnutls_cipher_encrypt2 (gnutls_cipher_hd_t handle, void *text, size_t textlen,
+  void* ciphertext, size_t ciphertextlen)
+{
+  return _gnutls_cipher_encrypt2 ((cipher_hd_st *) handle, text, textlen, 
+    ciphertext, ciphertextlen);
+}
+
+/**
+ * gnutls_cipher_decrypt2:
+ * @handle: is a #gnutls_cipher_hd_t structure.
+ * @ciphertext: the data to encrypt
+ * @ciphertextlen: The length of data to encrypt
+ * @text: the decrypted data
+ * @textlen: The available length for decrypted data
+ *
+ * This function will decrypt the given data using the algorithm
+ * specified by the context.
+ *
+ * Returns: Zero or a negative value on error.
+ *
+ * Since: 2.10.0
+ **/
+int
+gnutls_cipher_decrypt2 (gnutls_cipher_hd_t handle, const void *ciphertext,
+		       size_t ciphertextlen, void* text, size_t textlen)
+{
+  return _gnutls_cipher_decrypt2 ((cipher_hd_st *) handle, ciphertext,
+				 ciphertextlen, text, textlen);
+}
+
 /**
  * gnutls_cipher_deinit:
  * @handle: is a #gnutls_cipher_hd_t structure.
diff --git a/lib/gnutls_cipher_int.c b/lib/gnutls_cipher_int.c
index 4a830b8c19..023e459007 100644
--- a/lib/gnutls_cipher_int.c
+++ b/lib/gnutls_cipher_int.c
@@ -113,6 +113,27 @@ int _gnutls_cipher_decrypt (const cipher_hd_st * handle, void *ciphertext,
   return 0;
 }
 
+int _gnutls_cipher_encrypt2 (const cipher_hd_st * handle, const void *text, int textlen,
+  void* ciphertext, int ciphertextlen)
+{
+  if (handle != NULL && handle->handle != NULL)
+    {
+      return handle->encrypt(handle->handle, text, textlen, ciphertext, ciphertextlen);
+    }
+  return 0;
+}
+
+int _gnutls_cipher_decrypt2 (const cipher_hd_st * handle, const void *ciphertext,
+			int ciphertextlen, void* text, int textlen)
+{
+  if (handle != NULL && handle->handle != NULL)
+    {
+      return handle->decrypt(handle->handle, ciphertext, ciphertextlen, 
+	text, textlen);
+    }
+  return 0;
+}
+
 void _gnutls_cipher_deinit (cipher_hd_st * handle)
 {
   if (handle != NULL && handle->handle != NULL)
diff --git a/lib/gnutls_cipher_int.h b/lib/gnutls_cipher_int.h
index 81950f10fa..3131746a12 100644
--- a/lib/gnutls_cipher_int.h
+++ b/lib/gnutls_cipher_int.h
@@ -50,6 +50,10 @@ int _gnutls_cipher_encrypt (const cipher_hd_st * handle, void *text,
 			    int textlen);
 int _gnutls_cipher_decrypt (const cipher_hd_st * handle, void *ciphertext,
 			    int ciphertextlen);
+int _gnutls_cipher_encrypt2 (const cipher_hd_st * handle, const void *text,
+			    int textlen, void* ciphertext, int ciphertextlen);
+int _gnutls_cipher_decrypt2 (const cipher_hd_st * handle, const void *ciphertext,
+			    int ciphertextlen, void* text, int textlen);
 void _gnutls_cipher_deinit (cipher_hd_st * handle);
 
 #endif /* GNUTLS_CIPHER_INT */
diff --git a/lib/includes/gnutls/crypto.h b/lib/includes/gnutls/crypto.h
index 31352dd534..d121490f0d 100644
--- a/lib/includes/gnutls/crypto.h
+++ b/lib/includes/gnutls/crypto.h
@@ -35,6 +35,11 @@ int gnutls_cipher_encrypt (const gnutls_cipher_hd_t handle,
 			   void *text, size_t textlen);
 int gnutls_cipher_decrypt (const gnutls_cipher_hd_t handle,
 			   void *ciphertext, size_t ciphertextlen);
+int gnutls_cipher_decrypt2 (gnutls_cipher_hd_t handle, const void *ciphertext,
+		       size_t ciphertextlen, void* text, size_t textlen);
+int gnutls_cipher_encrypt2 (gnutls_cipher_hd_t handle, void *text, size_t textlen,
+  void* ciphertext, size_t ciphertextlen);
+
 void gnutls_cipher_deinit (gnutls_cipher_hd_t handle);
 int gnutls_cipher_get_block_size (gnutls_cipher_algorithm_t algorithm);
 
diff --git a/lib/libgnutls.map b/lib/libgnutls.map
index 47eed0cbcc..9b25b299e0 100644
--- a/lib/libgnutls.map
+++ b/lib/libgnutls.map
@@ -681,6 +681,8 @@ GNUTLS_2_11
 	gnutls_pk_bits_to_sec_param;
 	gnutls_rnd;
 	gnutls_x509_crq_get_preferred_hash_algorithm;
+	gnutls_cipher_encrypt2;
+	gnutls_cipher_decrypt2;
 } GNUTLS_2_10;
 
 GNUTLS_PRIVATE {
-- 
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