VeraCrypt
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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2016-09-24 21:02:59 (GMT)
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2016-10-17 16:40:13 (GMT)
commit7c154a3f262212d49086fd381676502a42269513 (patch)
treebb6add71b048f207659eb46661b43b96efb7f7b9 /src
parentb81ec7d7e0170bed5a878169daed9392bf80751d (diff)
downloadVeraCrypt-7c154a3f262212d49086fd381676502a42269513.zip
VeraCrypt-7c154a3f262212d49086fd381676502a42269513.tar.gz
Crypto: clarify PRF code by removing unused parameters in functions hmac_XXX_internak and derive_u_XXX
Diffstat (limited to 'src')
-rw-r--r--src/Common/Pkcs5.c70
1 files changed, 31 insertions, 39 deletions
diff --git a/src/Common/Pkcs5.c b/src/Common/Pkcs5.c
index d0dbd8b..bc747cc 100644
--- a/src/Common/Pkcs5.c
+++ b/src/Common/Pkcs5.c
@@ -61,8 +61,6 @@ typedef struct hmac_sha256_ctx_struct
void hmac_sha256_internal
(
- char *k, /* secret key. It's ensured to be always <= 32 bytes */
- int lk, /* length of the key in bytes */
char *d, /* input data. d pointer is guaranteed to be at least 32-bytes long */
int ld, /* length of input data in bytes */
hmac_sha256_ctx* hmac /* HMAC-SHA256 context which holds temporary variables */
@@ -140,14 +138,14 @@ void hmac_sha256
sha256_hash ((unsigned char *) buf, SHA256_BLOCKSIZE, ctx);
- hmac_sha256_internal(k, lk, d, ld, &hmac);
+ hmac_sha256_internal(d, ld, &hmac);
/* Prevent leaks */
burn(&hmac, sizeof(hmac));
burn(key, sizeof(key));
}
#endif
-static void derive_u_sha256 (char *pwd, int pwd_len, char *salt, int salt_len, uint32 iterations, int b, hmac_sha256_ctx* hmac)
+static void derive_u_sha256 (char *salt, int salt_len, uint32 iterations, int b, hmac_sha256_ctx* hmac)
{
char* k = hmac->k;
char* u = hmac->u;
@@ -176,13 +174,13 @@ static void derive_u_sha256 (char *pwd, int pwd_len, char *salt, int salt_len, u
memset (&k[salt_len], 0, 3);
k[salt_len + 3] = (char) b;
- hmac_sha256_internal (pwd, pwd_len, k, salt_len + 4, hmac);
+ hmac_sha256_internal (k, salt_len + 4, hmac);
memcpy (u, k, SHA256_DIGESTSIZE);
/* remaining iterations */
while (c > 1)
{
- hmac_sha256_internal (pwd, pwd_len, k, SHA256_DIGESTSIZE, hmac);
+ hmac_sha256_internal (k, SHA256_DIGESTSIZE, hmac);
for (i = 0; i < SHA256_DIGESTSIZE; i++)
{
u[i] ^= k[i];
@@ -254,13 +252,13 @@ void derive_key_sha256 (char *pwd, int pwd_len, char *salt, int salt_len, uint32
/* first l - 1 blocks */
for (b = 1; b < l; b++)
{
- derive_u_sha256 (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_sha256 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, SHA256_DIGESTSIZE);
dk += SHA256_DIGESTSIZE;
}
/* last block */
- derive_u_sha256 (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_sha256 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, r);
@@ -286,8 +284,6 @@ typedef struct hmac_sha512_ctx_struct
void hmac_sha512_internal
(
- char *k, /* secret key */
- int lk, /* length of the key in bytes */
char *d, /* data and also output buffer of at least 64 bytes */
int ld, /* length of data in bytes */
hmac_sha512_ctx* hmac
@@ -365,14 +361,14 @@ void hmac_sha512
sha512_hash ((unsigned char *) buf, SHA512_BLOCKSIZE, ctx);
- hmac_sha512_internal (k, lk, d, ld, &hmac);
+ hmac_sha512_internal (d, ld, &hmac);
/* Prevent leaks */
burn (&hmac, sizeof(hmac));
burn (key, sizeof(key));
}
-static void derive_u_sha512 (char *pwd, int pwd_len, char *salt, int salt_len, uint32 iterations, int b, hmac_sha512_ctx* hmac)
+static void derive_u_sha512 (char *salt, int salt_len, uint32 iterations, int b, hmac_sha512_ctx* hmac)
{
char* k = hmac->k;
char* u = hmac->u;
@@ -384,13 +380,13 @@ static void derive_u_sha512 (char *pwd, int pwd_len, char *salt, int salt_len, u
memset (&k[salt_len], 0, 3);
k[salt_len + 3] = (char) b;
- hmac_sha512_internal (pwd, pwd_len, k, salt_len + 4, hmac);
+ hmac_sha512_internal (k, salt_len + 4, hmac);
memcpy (u, k, SHA512_DIGESTSIZE);
/* remaining iterations */
for (c = 1; c < iterations; c++)
{
- hmac_sha512_internal (pwd, pwd_len, k, SHA512_DIGESTSIZE, hmac);
+ hmac_sha512_internal (k, SHA512_DIGESTSIZE, hmac);
for (i = 0; i < SHA512_DIGESTSIZE; i++)
{
u[i] ^= k[i];
@@ -460,13 +456,13 @@ void derive_key_sha512 (char *pwd, int pwd_len, char *salt, int salt_len, uint32
/* first l - 1 blocks */
for (b = 1; b < l; b++)
{
- derive_u_sha512 (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_sha512 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, SHA512_DIGESTSIZE);
dk += SHA512_DIGESTSIZE;
}
/* last block */
- derive_u_sha512 (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_sha512 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, r);
@@ -488,7 +484,7 @@ typedef struct hmac_ripemd160_ctx_struct
char u[RIPEMD160_DIGESTSIZE];
} hmac_ripemd160_ctx;
-void hmac_ripemd160_internal (char *key, int keylen, char *input_digest, int len, hmac_ripemd160_ctx* hmac)
+void hmac_ripemd160_internal (char *input_digest, int len, hmac_ripemd160_ctx* hmac)
{
RMD160_CTX* context = &(hmac->context);
@@ -557,7 +553,7 @@ void hmac_ripemd160 (char *key, int keylen, char *input_digest, int len)
RMD160Init(ctx); /* init context for 2nd pass */
RMD160Update(ctx, k_pad, RIPEMD160_BLOCKSIZE); /* start with outer pad */
- hmac_ripemd160_internal (key, keylen, input_digest, len, &hmac);
+ hmac_ripemd160_internal (input_digest, len, &hmac);
burn (&hmac, sizeof(hmac));
burn (tk, sizeof(tk));
@@ -565,7 +561,7 @@ void hmac_ripemd160 (char *key, int keylen, char *input_digest, int len)
#endif
-static void derive_u_ripemd160 (char *pwd, int pwd_len, char *salt, int salt_len, uint32 iterations, int b, hmac_ripemd160_ctx* hmac)
+static void derive_u_ripemd160 (char *salt, int salt_len, uint32 iterations, int b, hmac_ripemd160_ctx* hmac)
{
char* k = hmac->k;
char* u = hmac->u;
@@ -594,13 +590,13 @@ static void derive_u_ripemd160 (char *pwd, int pwd_len, char *salt, int salt_len
memset (&k[salt_len], 0, 3);
k[salt_len + 3] = (char) b;
- hmac_ripemd160_internal (pwd, pwd_len, k, salt_len + 4, hmac);
+ hmac_ripemd160_internal (k, salt_len + 4, hmac);
memcpy (u, k, RIPEMD160_DIGESTSIZE);
/* remaining iterations */
while ( c > 1)
{
- hmac_ripemd160_internal (pwd, pwd_len, k, RIPEMD160_DIGESTSIZE, hmac);
+ hmac_ripemd160_internal (k, RIPEMD160_DIGESTSIZE, hmac);
for (i = 0; i < RIPEMD160_DIGESTSIZE; i++)
{
u[i] ^= k[i];
@@ -672,13 +668,13 @@ void derive_key_ripemd160 (char *pwd, int pwd_len, char *salt, int salt_len, uin
/* first l - 1 blocks */
for (b = 1; b < l; b++)
{
- derive_u_ripemd160 (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_ripemd160 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, RIPEMD160_DIGESTSIZE);
dk += RIPEMD160_DIGESTSIZE;
}
/* last block */
- derive_u_ripemd160 (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_ripemd160 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, r);
@@ -703,8 +699,6 @@ typedef struct hmac_whirlpool_ctx_struct
void hmac_whirlpool_internal
(
- char *k, /* secret key */
- int lk, /* length of the key in bytes */
char *d, /* input/output data. d pointer is guaranteed to be at least 64-bytes long */
int ld, /* length of input data in bytes */
hmac_whirlpool_ctx* hmac /* HMAC-Whirlpool context which holds temporary variables */
@@ -787,7 +781,7 @@ void hmac_whirlpool
WHIRLPOOL_add ((unsigned char *) buf, WHIRLPOOL_BLOCKSIZE, ctx);
- hmac_whirlpool_internal(k, lk, d, ld, &hmac);
+ hmac_whirlpool_internal(d, ld, &hmac);
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
if (NT_SUCCESS (saveStatus) && HasISSE())
@@ -797,7 +791,7 @@ void hmac_whirlpool
burn(&hmac, sizeof(hmac));
}
-static void derive_u_whirlpool (char *pwd, int pwd_len, char *salt, int salt_len, uint32 iterations, int b, hmac_whirlpool_ctx* hmac)
+static void derive_u_whirlpool (char *salt, int salt_len, uint32 iterations, int b, hmac_whirlpool_ctx* hmac)
{
char* u = hmac->u;
char* k = hmac->k;
@@ -809,13 +803,13 @@ static void derive_u_whirlpool (char *pwd, int pwd_len, char *salt, int salt_len
memset (&k[salt_len], 0, 3);
k[salt_len + 3] = (char) b;
- hmac_whirlpool_internal (pwd, pwd_len, k, salt_len + 4, hmac);
+ hmac_whirlpool_internal (k, salt_len + 4, hmac);
memcpy (u, k, WHIRLPOOL_DIGESTSIZE);
/* remaining iterations */
for (c = 1; c < iterations; c++)
{
- hmac_whirlpool_internal (pwd, pwd_len, k, WHIRLPOOL_DIGESTSIZE, hmac);
+ hmac_whirlpool_internal (k, WHIRLPOOL_DIGESTSIZE, hmac);
for (i = 0; i < WHIRLPOOL_DIGESTSIZE; i++)
{
u[i] ^= k[i];
@@ -889,13 +883,13 @@ void derive_key_whirlpool (char *pwd, int pwd_len, char *salt, int salt_len, uin
/* first l - 1 blocks */
for (b = 1; b < l; b++)
{
- derive_u_whirlpool (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_whirlpool (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, WHIRLPOOL_DIGESTSIZE);
dk += WHIRLPOOL_DIGESTSIZE;
}
/* last block */
- derive_u_whirlpool (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_whirlpool (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, r);
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
@@ -920,8 +914,6 @@ typedef struct hmac_streebog_ctx_struct
void hmac_streebog_internal
(
- char *k, /* secret key */
- int lk, /* length of the key in bytes */
char *d, /* input/output data. d pointer is guaranteed to be at least 64-bytes long */
int ld, /* length of input data in bytes */
hmac_streebog_ctx* hmac /* HMAC-Whirlpool context which holds temporary variables */
@@ -1004,7 +996,7 @@ void hmac_streebog
STREEBOG_add (ctx, (unsigned char *) buf, STREEBOG_BLOCKSIZE);
- hmac_streebog_internal(k, lk, d, ld, &hmac);
+ hmac_streebog_internal(d, ld, &hmac);
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
if (NT_SUCCESS (saveStatus) && (HasSSE2() || HasSSE41()))
@@ -1014,7 +1006,7 @@ void hmac_streebog
burn(&hmac, sizeof(hmac));
}
-static void derive_u_streebog (char *pwd, int pwd_len, char *salt, int salt_len, uint32 iterations, int b, hmac_streebog_ctx* hmac)
+static void derive_u_streebog (char *salt, int salt_len, uint32 iterations, int b, hmac_streebog_ctx* hmac)
{
char* u = hmac->u;
char* k = hmac->k;
@@ -1026,13 +1018,13 @@ static void derive_u_streebog (char *pwd, int pwd_len, char *salt, int salt_len,
memset (&k[salt_len], 0, 3);
k[salt_len + 3] = (char) b;
- hmac_streebog_internal (pwd, pwd_len, k, salt_len + 4, hmac);
+ hmac_streebog_internal (k, salt_len + 4, hmac);
memcpy (u, k, STREEBOG_DIGESTSIZE);
/* remaining iterations */
for (c = 1; c < iterations; c++)
{
- hmac_streebog_internal (pwd, pwd_len, k, STREEBOG_DIGESTSIZE, hmac);
+ hmac_streebog_internal (k, STREEBOG_DIGESTSIZE, hmac);
for (i = 0; i < STREEBOG_DIGESTSIZE; i++)
{
u[i] ^= k[i];
@@ -1106,13 +1098,13 @@ void derive_key_streebog (char *pwd, int pwd_len, char *salt, int salt_len, uint
/* first l - 1 blocks */
for (b = 1; b < l; b++)
{
- derive_u_streebog (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_streebog (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, STREEBOG_DIGESTSIZE);
dk += STREEBOG_DIGESTSIZE;
}
/* last block */
- derive_u_streebog (pwd, pwd_len, salt, salt_len, iterations, b, &hmac);
+ derive_u_streebog (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, r);
#if defined (DEVICE_DRIVER) && !defined (_WIN64)