From 16d412f4654d7eca75139c926c09ca66fe88a789 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20P=C3=A9gouri=C3=A9-Gonnard?= <mpg@elzevir.fr>
Date: Mon, 6 Jul 2015 15:26:26 +0200
Subject: [PATCH] Add md/shaXXX_clone() API

Will be used in the SSL/TLS modules
---
 include/mbedtls/md2.h       | 9 +++++++++
 include/mbedtls/md4.h       | 9 +++++++++
 include/mbedtls/md5.h       | 9 +++++++++
 include/mbedtls/ripemd160.h | 9 +++++++++
 include/mbedtls/sha1.h      | 9 +++++++++
 include/mbedtls/sha256.h    | 9 +++++++++
 include/mbedtls/sha512.h    | 9 +++++++++
 library/md2.c               | 6 ++++++
 library/md4.c               | 6 ++++++
 library/md5.c               | 6 ++++++
 library/ripemd160.c         | 6 ++++++
 library/sha1.c              | 6 ++++++
 library/sha256.c            | 6 ++++++
 library/sha512.c            | 6 ++++++
 14 files changed, 105 insertions(+)

diff --git a/include/mbedtls/md2.h b/include/mbedtls/md2.h
index 8d012666d..151a8f45d 100644
--- a/include/mbedtls/md2.h
+++ b/include/mbedtls/md2.h
@@ -66,6 +66,15 @@ void mbedtls_md2_init( mbedtls_md2_context *ctx );
  */
 void mbedtls_md2_free( mbedtls_md2_context *ctx );
 
+/**
+ * \brief          Clone (the state of) an MD2 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_md2_clone( mbedtls_md2_context *dst,
+                        const mbedtls_md2_context *src );
+
 /**
  * \brief          MD2 context setup
  *
diff --git a/include/mbedtls/md4.h b/include/mbedtls/md4.h
index 96dcc447f..fd756b91b 100644
--- a/include/mbedtls/md4.h
+++ b/include/mbedtls/md4.h
@@ -66,6 +66,15 @@ void mbedtls_md4_init( mbedtls_md4_context *ctx );
  */
 void mbedtls_md4_free( mbedtls_md4_context *ctx );
 
+/**
+ * \brief          Clone (the state of) an MD4 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_md4_clone( mbedtls_md4_context *dst,
+                        const mbedtls_md4_context *src );
+
 /**
  * \brief          MD4 context setup
  *
diff --git a/include/mbedtls/md5.h b/include/mbedtls/md5.h
index 163780a24..40273d480 100644
--- a/include/mbedtls/md5.h
+++ b/include/mbedtls/md5.h
@@ -66,6 +66,15 @@ void mbedtls_md5_init( mbedtls_md5_context *ctx );
  */
 void mbedtls_md5_free( mbedtls_md5_context *ctx );
 
+/**
+ * \brief          Clone (the state of) an MD5 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_md5_clone( mbedtls_md5_context *dst,
+                        const mbedtls_md5_context *src );
+
 /**
  * \brief          MD5 context setup
  *
diff --git a/include/mbedtls/ripemd160.h b/include/mbedtls/ripemd160.h
index e66c46a20..9013f208e 100644
--- a/include/mbedtls/ripemd160.h
+++ b/include/mbedtls/ripemd160.h
@@ -66,6 +66,15 @@ void mbedtls_ripemd160_init( mbedtls_ripemd160_context *ctx );
  */
 void mbedtls_ripemd160_free( mbedtls_ripemd160_context *ctx );
 
+/**
+ * \brief          Clone (the state of) an RIPEMD-160 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_ripemd160_clone( mbedtls_ripemd160_context *dst,
+                        const mbedtls_ripemd160_context *src );
+
 /**
  * \brief          RIPEMD-160 context setup
  *
diff --git a/include/mbedtls/sha1.h b/include/mbedtls/sha1.h
index 74fb85578..e8bd65e38 100644
--- a/include/mbedtls/sha1.h
+++ b/include/mbedtls/sha1.h
@@ -66,6 +66,15 @@ void mbedtls_sha1_init( mbedtls_sha1_context *ctx );
  */
 void mbedtls_sha1_free( mbedtls_sha1_context *ctx );
 
+/**
+ * \brief          Clone (the state of) a SHA-1 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
+                         const mbedtls_sha1_context *src );
+
 /**
  * \brief          SHA-1 context setup
  *
diff --git a/include/mbedtls/sha256.h b/include/mbedtls/sha256.h
index 113c23b02..0dbc4b256 100644
--- a/include/mbedtls/sha256.h
+++ b/include/mbedtls/sha256.h
@@ -67,6 +67,15 @@ void mbedtls_sha256_init( mbedtls_sha256_context *ctx );
  */
 void mbedtls_sha256_free( mbedtls_sha256_context *ctx );
 
+/**
+ * \brief          Clone (the state of) a SHA-256 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
+                           const mbedtls_sha256_context *src );
+
 /**
  * \brief          SHA-256 context setup
  *
diff --git a/include/mbedtls/sha512.h b/include/mbedtls/sha512.h
index 6b09a485f..7e1bc1e33 100644
--- a/include/mbedtls/sha512.h
+++ b/include/mbedtls/sha512.h
@@ -67,6 +67,15 @@ void mbedtls_sha512_init( mbedtls_sha512_context *ctx );
  */
 void mbedtls_sha512_free( mbedtls_sha512_context *ctx );
 
+/**
+ * \brief          Clone (the state of) a SHA-512 context
+ *
+ * \param dst      The destination context
+ * \param src      The context to be cloned
+ */
+void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
+                           const mbedtls_sha512_context *src );
+
 /**
  * \brief          SHA-512 context setup
  *
diff --git a/library/md2.c b/library/md2.c
index 5cd024a3d..d1fea1273 100644
--- a/library/md2.c
+++ b/library/md2.c
@@ -97,6 +97,12 @@ void mbedtls_md2_free( mbedtls_md2_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_md2_context ) );
 }
 
+void mbedtls_md2_clone( mbedtls_md2_context *dst,
+                        const mbedtls_md2_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * MD2 context setup
  */
diff --git a/library/md4.c b/library/md4.c
index 90623582a..b71d2c939 100644
--- a/library/md4.c
+++ b/library/md4.c
@@ -90,6 +90,12 @@ void mbedtls_md4_free( mbedtls_md4_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_md4_context ) );
 }
 
+void mbedtls_md4_clone( mbedtls_md4_context *dst,
+                        const mbedtls_md4_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * MD4 context setup
  */
diff --git a/library/md5.c b/library/md5.c
index 599debc47..7c846bed0 100644
--- a/library/md5.c
+++ b/library/md5.c
@@ -89,6 +89,12 @@ void mbedtls_md5_free( mbedtls_md5_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_md5_context ) );
 }
 
+void mbedtls_md5_clone( mbedtls_md5_context *dst,
+                        const mbedtls_md5_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * MD5 context setup
  */
diff --git a/library/ripemd160.c b/library/ripemd160.c
index d8a451daf..ecaeea00a 100644
--- a/library/ripemd160.c
+++ b/library/ripemd160.c
@@ -88,6 +88,12 @@ void mbedtls_ripemd160_free( mbedtls_ripemd160_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_ripemd160_context ) );
 }
 
+void mbedtls_ripemd160_clone( mbedtls_ripemd160_context *dst,
+                        const mbedtls_ripemd160_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * RIPEMD-160 context setup
  */
diff --git a/library/sha1.c b/library/sha1.c
index 9a21bcb2a..7ca83508c 100644
--- a/library/sha1.c
+++ b/library/sha1.c
@@ -89,6 +89,12 @@ void mbedtls_sha1_free( mbedtls_sha1_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_sha1_context ) );
 }
 
+void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
+                         const mbedtls_sha1_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * SHA-1 context setup
  */
diff --git a/library/sha256.c b/library/sha256.c
index cf0b15fad..4b393d05f 100644
--- a/library/sha256.c
+++ b/library/sha256.c
@@ -89,6 +89,12 @@ void mbedtls_sha256_free( mbedtls_sha256_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_sha256_context ) );
 }
 
+void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
+                           const mbedtls_sha256_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * SHA-256 context setup
  */
diff --git a/library/sha512.c b/library/sha512.c
index f09b0f7fe..3daf08089 100644
--- a/library/sha512.c
+++ b/library/sha512.c
@@ -150,6 +150,12 @@ void mbedtls_sha512_free( mbedtls_sha512_context *ctx )
     mbedtls_zeroize( ctx, sizeof( mbedtls_sha512_context ) );
 }
 
+void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
+                           const mbedtls_sha512_context *src )
+{
+    *dst = *src;
+}
+
 /*
  * SHA-512 context setup
  */