From 7a31387b49e0b04ba43bdf6fbc869c6a3e970251 Mon Sep 17 00:00:00 2001
From: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Date: Wed, 28 Jul 2010 20:26:44 +0200
Subject: NCR_CIPHER_MAX_KEY_LEN no longer exist in userspace API.

---
 TODO               | 1 +
 ncr-int.h          | 1 +
 ncr.c              | 7 +++++--
 ncr.h              | 3 +--
 userspace/setkey.c | 4 +++-
 5 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/TODO b/TODO
index 5ed80e1..98b81fc 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,4 @@
 * ioctl_compat() mode for ncr.h API as it is in cryptodev.h
 * Put limits to sessions
 * Export private keys to PKCS #8 format (can it be implemented?)
+* Documentation for functions
diff --git a/ncr-int.h b/ncr-int.h
index 489e052..e79747c 100644
--- a/ncr-int.h
+++ b/ncr-int.h
@@ -8,6 +8,7 @@
 #include <ncr-dh.h>
 
 #define KEY_DATA_MAX_SIZE 3*1024
+#define NCR_CIPHER_MAX_KEY_LEN 1024
 
 #define err() printk(KERN_DEBUG"ncr: %s: %s: %d\n", __FILE__, __func__, __LINE__)
 
diff --git a/ncr.c b/ncr.c
index 624d217..7608312 100644
--- a/ncr.c
+++ b/ncr.c
@@ -103,11 +103,14 @@ struct ncr_master_key_st st;
 		dprintk(0, KERN_DEBUG, "Master key was previously initialized.\n");
 	}
 
+	if (unlikely(copy_from_user(master_key.key.secret.data, st.key, st.key_size))) {
+		err();
+		return -EFAULT;
+	}
+
 	dprintk(0, KERN_INFO, "Initializing master key.\n");
 
 	master_key.type = NCR_KEY_TYPE_SECRET;
-	
-	memcpy(master_key.key.secret.data, st.key, st.key_size);
 	master_key.key.secret.size = st.key_size;
 
 	return 0;
diff --git a/ncr.h b/ncr.h
index 01fd413..53c77be 100644
--- a/ncr.h
+++ b/ncr.h
@@ -7,7 +7,6 @@
 #endif
 
 #define NCR_CIPHER_MAX_BLOCK_LEN 32
-#define NCR_CIPHER_MAX_KEY_LEN 512
 #define NCR_HASH_MAX_OUTPUT_SIZE  64
 
 typedef enum {
@@ -221,7 +220,7 @@ struct ncr_key_wrap_st {
 
 /* Internal ops  */
 struct ncr_master_key_st {
-	uint8_t key[NCR_CIPHER_MAX_KEY_LEN];
+	uint8_t __user * key;
 	uint16_t key_size;
 };
 
diff --git a/userspace/setkey.c b/userspace/setkey.c
index d0a2b62..ea9d30e 100644
--- a/userspace/setkey.c
+++ b/userspace/setkey.c
@@ -25,6 +25,7 @@ int main(int argc, char** argv)
 	struct ncr_master_key_st key;
 	int size, ret;
 	struct stat st;
+	uint8_t rawkey[32];
 	
 	if (argc != 2) {
 		fprintf(stderr, "Usage: setkey [filename]\n");
@@ -52,12 +53,13 @@ int main(int argc, char** argv)
 		exit(1);
 	}
 
-	size = fread(key.key, 1, sizeof(key.key), fp);
+	size = fread(rawkey, 1, sizeof(rawkey), fp);
 	if (size < 16) {
 		fprintf(stderr, "Illegal key!\n");
 		exit(1);
 	}
 	fclose(fp);
+	key.key = rawkey;
 	key.key_size = size;
 
 	/* Open the crypto device */
-- 
cgit