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use exisiting dummy data for compression round

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toddouska 2012-12-28 11:48:30 -08:00
parent 7ac6a21af5
commit 09ea7169d7
1 changed files with 11 additions and 14 deletions
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25
src/internal.c
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@ -3179,7 +3179,7 @@ static int DecryptMessage(CYASSL* ssl, byte* input, word32 sz, word32* idx)
#ifndef NO_MD5
static INLINE void Md5Round(byte* data, int sz)
static INLINE void Md5Round(const byte* data, int sz)
{
Md5 md5;
@ -3190,7 +3190,7 @@ static INLINE void Md5Round(byte* data, int sz)
#endif
static INLINE void ShaRound(byte* data, int sz)
static INLINE void ShaRound(const byte* data, int sz)
{
Sha sha;
@ -3201,7 +3201,7 @@ static INLINE void ShaRound(byte* data, int sz)
#ifndef NO_SHA256
static INLINE void Sha256Round(byte* data, int sz)
static INLINE void Sha256Round(const byte* data, int sz)
{
Sha256 sha256;
@ -3214,7 +3214,7 @@ static INLINE void Sha256Round(byte* data, int sz)
#ifdef CYASSL_SHA384
static INLINE void Sha384Round(byte* data, int sz)
static INLINE void Sha384Round(const byte* data, int sz)
{
Sha384 sha384;
@ -3227,7 +3227,7 @@ static INLINE void Sha384Round(byte* data, int sz)
#ifdef CYASSL_SHA512
static INLINE void Sha512Round(byte* data, int sz)
static INLINE void Sha512Round(const byte* data, int sz)
{
Sha512 sha512;
@ -3240,7 +3240,7 @@ static INLINE void Sha512Round(byte* data, int sz)
#ifdef CYASSL_RIPEMD
static INLINE void RmdRound(byte* data, int sz)
static INLINE void RmdRound(const byte* data, int sz)
{
Ripemd ripemd;
@ -3251,7 +3251,7 @@ static INLINE void RmdRound(byte* data, int sz)
#endif
static INLINE void DoRound(int type, byte* data, int sz)
static INLINE void DoRound(int type, const byte* data, int sz)
{
switch (type) {
@ -3300,15 +3300,12 @@ static INLINE void DoRound(int type, byte* data, int sz)
/* do number of compression rounds on dummy data */
static INLINE void CompressRounds(CYASSL* ssl, int rounds)
static INLINE void CompressRounds(CYASSL* ssl, int rounds, const byte* dummy)
{
int i;
byte dummy[COMPRESS_DUMMY_SIZE];
XMEMSET(dummy, 1, sizeof(dummy));
for (i = 0; i < rounds; i++)
DoRound(ssl->specs.mac_algorithm, dummy, sizeof(dummy));
DoRound(ssl->specs.mac_algorithm, dummy, COMPRESS_LOWER);
}
@ -3356,7 +3353,7 @@ static int PadCheck(const byte* input, byte pad, int length)
/* get compression extra rounds */
static int GetRounds(int pLen, int padLen, int t)
static INLINE int GetRounds(int pLen, int padLen, int t)
{
int roundL1 = 1; /* round up flags */
int roundL2 = 1;
@ -3412,7 +3409,7 @@ static int TimingPadVerify(CYASSL* ssl, const byte* input, int padLen, int t,
PadCheck(dummy, (byte)padLen, MAX_PAD_SIZE - padLen - 1);
ssl->hmac(ssl, verify, input, pLen - padLen - 1 - t, application_data, 1);
CompressRounds(ssl, GetRounds(pLen, padLen, t));
CompressRounds(ssl, GetRounds(pLen, padLen, t), dummy);
if (ConstantCompare(verify, input + (pLen - padLen - 1 - t), t) != 0) {
CYASSL_MSG("Verify MAC compare failed");