From 0fe031dd722079cd076cc120d45e1711eb108fe3 Mon Sep 17 00:00:00 2001
From: Raymond Mao <raymond.mao@linaro.org>
Date: Thu, 16 May 2024 14:11:51 -0700
Subject: [PATCH] md5: Use typedef for MD5 context

Use of typedef is beneficial for porting with other crypto libs
without changing the API callers.
Secondly, it is for the code consistency with other digest libs.
SHA1, SHA256 and SHA512 are all using typedef for their context.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
---
 drivers/crypto/hash/hash_sw.c |  8 ++++----
 include/u-boot/md5.h          | 10 +++++-----
 lib/md5.c                     | 10 +++++-----
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/crypto/hash/hash_sw.c b/drivers/crypto/hash/hash_sw.c
index ffd4ab149f..4590e22548 100644
--- a/drivers/crypto/hash/hash_sw.c
+++ b/drivers/crypto/hash/hash_sw.c
@@ -50,17 +50,17 @@ static void hash_finish_crc32(void *ctx, void *obuf)
 /* MD5 */
 static void hash_init_md5(void *ctx)
 {
-	MD5Init((struct MD5Context *)ctx);
+	MD5Init((MD5Context *)ctx);
 }
 
 static void hash_update_md5(void *ctx, const void *ibuf, uint32_t ilen)
 {
-	MD5Update((struct MD5Context *)ctx, ibuf, ilen);
+	MD5Update((MD5Context *)ctx, ibuf, ilen);
 }
 
 static void hash_finish_md5(void *ctx, void *obuf)
 {
-	MD5Final(obuf, (struct MD5Context *)ctx);
+	MD5Final(obuf, (MD5Context *)ctx);
 }
 
 /* SHA1 */
@@ -158,7 +158,7 @@ static struct sw_hash_impl sw_hash_impl[HASH_ALGO_NUM] = {
 		.init = hash_init_md5,
 		.update = hash_update_md5,
 		.finish = hash_finish_md5,
-		.ctx_alloc_sz = sizeof(struct MD5Context),
+		.ctx_alloc_sz = sizeof(MD5Context),
 	},
 
 	[HASH_ALGO_SHA1] = {
diff --git a/include/u-boot/md5.h b/include/u-boot/md5.h
index d61364c0ae..c465925ea8 100644
--- a/include/u-boot/md5.h
+++ b/include/u-boot/md5.h
@@ -10,18 +10,18 @@
 
 #define MD5_SUM_LEN	16
 
-struct MD5Context {
+typedef struct MD5Context {
 	__u32 buf[4];
 	__u32 bits[2];
 	union {
 		unsigned char in[64];
 		__u32 in32[16];
 	};
-};
+} MD5Context;
 
-void MD5Init(struct MD5Context *ctx);
-void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len);
-void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
+void MD5Init(MD5Context *ctx);
+void MD5Update(MD5Context *ctx, unsigned char const *buf, unsigned int len);
+void MD5Final(unsigned char digest[16], MD5Context *ctx);
 
 /*
  * Calculate and store in 'output' the MD5 digest of 'len' bytes at
diff --git a/lib/md5.c b/lib/md5.c
index faf3f78ab1..34343cf8e2 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -55,7 +55,7 @@ byteReverse(unsigned char *buf, unsigned longs)
  * initialization constants.
  */
 void
-MD5Init(struct MD5Context *ctx)
+MD5Init(MD5Context *ctx)
 {
 	ctx->buf[0] = 0x67452301;
 	ctx->buf[1] = 0xefcdab89;
@@ -71,7 +71,7 @@ MD5Init(struct MD5Context *ctx)
  * of bytes.
  */
 void
-MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
+MD5Update(MD5Context *ctx, unsigned char const *buf, unsigned int len)
 {
 	register __u32 t;
 
@@ -120,7 +120,7 @@ MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
  * 1 0* (64-bit count of bits processed, MSB-first)
  */
 void
-MD5Final(unsigned char digest[16], struct MD5Context *ctx)
+MD5Final(unsigned char digest[16], MD5Context *ctx)
 {
 	unsigned int count;
 	unsigned char *p;
@@ -269,7 +269,7 @@ MD5Transform(__u32 buf[4], __u32 const in[16])
 void
 md5 (unsigned char *input, int len, unsigned char output[16])
 {
-	struct MD5Context context;
+	MD5Context context;
 
 	MD5Init(&context);
 	MD5Update(&context, input, len);
@@ -286,7 +286,7 @@ void
 md5_wd(const unsigned char *input, unsigned int len, unsigned char output[16],
 	unsigned int chunk_sz)
 {
-	struct MD5Context context;
+	MD5Context context;
 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
 	const unsigned char *end, *curr;
 	int chunk;
-- 
2.39.5