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This commit is contained in:
philippe44
2023-03-25 16:48:41 -07:00
parent c712b78931
commit 008c36facf
2983 changed files with 465270 additions and 13569 deletions
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52
components/spotify/cspot/src/Shannon.cpp
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@@ -9,16 +9,18 @@ using std::size_t;
static inline uint32_t rotl(uint32_t n, unsigned int c)
{
const unsigned int mask = (CHAR_BIT * sizeof(n) - 1); // assumes width is a power of 2.
// assert ( (c<=mask) &&"rotate by type width or more");
c &= sizeof(n) * CHAR_BIT - 1;
return (n << c) | (n >> (sizeof(n)*CHAR_BIT-c));
c &= mask;
return (n << c) | (n >> ((-c) & mask));
}
static inline uint32_t rotr(uint32_t n, unsigned int c)
{
const unsigned int mask = (CHAR_BIT * sizeof(n) - 1); // assumes width is a power of 2.
// assert ( (c<=mask) &&"rotate by type width or more");
c &= sizeof(n) * CHAR_BIT - 1;
return (n >> c) | (n << (sizeof(n)*CHAR_BIT-c));
c &= mask;
return (n >> c) | (n << ((-c) & mask));
}
uint32_t Shannon::sbox1(uint32_t w)
@@ -140,7 +142,7 @@ void Shannon::diffuse()
#define ADDKEY(k) \
this->R[KEYP] ^= (k);
void Shannon::loadKey(const std::vector<uint8_t> &key)
void Shannon::loadKey(const std::vector<uint8_t>& key)
{
int i, j;
uint32_t k;
@@ -182,7 +184,7 @@ void Shannon::loadKey(const std::vector<uint8_t> &key)
this->R[i] ^= this->CRC[i];
}
void Shannon::key(const std::vector<uint8_t> &key)
void Shannon::key(const std::vector<uint8_t>& key)
{
this->initState();
this->loadKey(key);
@@ -191,7 +193,7 @@ void Shannon::key(const std::vector<uint8_t> &key)
this->nbuf = 0;
}
void Shannon::nonce(const std::vector<uint8_t> &nonce)
void Shannon::nonce(const std::vector<uint8_t>& nonce)
{
this->reloadState();
this->konst = Shannon::INITKONST;
@@ -200,11 +202,11 @@ void Shannon::nonce(const std::vector<uint8_t> &nonce)
this->nbuf = 0;
}
void Shannon::stream(std::vector<uint8_t> &bufVec)
void Shannon::stream(std::vector<uint8_t>& bufVec)
{
uint8_t *endbuf;
uint8_t* endbuf;
size_t nbytes = bufVec.size();
uint8_t *buf = bufVec.data();
uint8_t* buf = bufVec.data();
/* handle any previously buffered bytes */
while (this->nbuf != 0 && nbytes != 0)
{
@@ -239,12 +241,12 @@ void Shannon::stream(std::vector<uint8_t> &bufVec)
}
}
void Shannon::maconly(std::vector<uint8_t> &bufVec)
void Shannon::maconly(std::vector<uint8_t>& bufVec)
{
size_t nbytes = bufVec.size();
uint8_t *buf = bufVec.data();
uint8_t* buf = bufVec.data();
uint8_t *endbuf;
uint8_t* endbuf;
/* handle any previously buffered bytes */
if (this->nbuf != 0)
@@ -286,11 +288,11 @@ void Shannon::maconly(std::vector<uint8_t> &bufVec)
}
}
void Shannon::encrypt(std::vector<uint8_t> &bufVec)
void Shannon::encrypt(std::vector<uint8_t>& bufVec)
{
size_t nbytes = bufVec.size();
uint8_t *buf = bufVec.data();
uint8_t *endbuf;
uint8_t* buf = bufVec.data();
uint8_t* endbuf;
uint32_t t = 0;
/* handle any previously buffered bytes */
@@ -341,11 +343,11 @@ void Shannon::encrypt(std::vector<uint8_t> &bufVec)
}
void Shannon::decrypt(std::vector<uint8_t> &bufVec)
void Shannon::decrypt(std::vector<uint8_t>& bufVec)
{
size_t nbytes = bufVec.size();
uint8_t *buf = bufVec.data();
uint8_t *endbuf;
uint8_t* buf = bufVec.data();
uint8_t* endbuf;
uint32_t t = 0;
/* handle any previously buffered bytes */
@@ -394,10 +396,10 @@ void Shannon::decrypt(std::vector<uint8_t> &bufVec)
}
}
void Shannon::finish(std::vector<uint8_t> &bufVec)
void Shannon::finish(std::vector<uint8_t>& bufVec)
{
size_t nbytes = bufVec.size();
uint8_t *buf = bufVec.data();
uint8_t* buf = bufVec.data();
int i;
/* handle any previously buffered bytes */
@@ -408,10 +410,10 @@ void Shannon::finish(std::vector<uint8_t> &bufVec)
}
/* perturb the MAC to mark end of input.
* Note that only the stream register is updated, not the CRC. This is an
* action that can't be duplicated by passing in plaintext, hence
* defeating any kind of extension attack.
*/
* Note that only the stream register is updated, not the CRC. This is an
* action that can't be duplicated by passing in plaintext, hence
* defeating any kind of extension attack.
*/
this->cycle();
ADDKEY(INITKONST ^ (this->nbuf << 3));
this->nbuf = 0;