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| author | Xavier Roche <roche@httrack.com> | 2023-11-18 11:03:53 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-11-18 11:03:53 +0100 |
| commit | 300f906d7829293715f8e35855207ff42a395d8d (patch) | |
| tree | 5394f22a853dbf11c12d2b4deae43d06bac34e0d /src/minizip/crypt.h | |
| parent | 8316bc0e974c2a84a35f2175d413804c9b5be90c (diff) | |
| parent | 3bffe8ca4659fbca47dcc8fba0472fadcf659a51 (diff) | |
Merge pull request #265 from jayaddison/maintenance/update-zlib-1.3
Maintenance: update vendored minizip code to the version distributed with zlib v1.3
Diffstat (limited to 'src/minizip/crypt.h')
| -rw-r--r-- | src/minizip/crypt.h | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/src/minizip/crypt.h b/src/minizip/crypt.h index 1e9e820..f4b93b7 100644 --- a/src/minizip/crypt.h +++ b/src/minizip/crypt.h @@ -32,12 +32,12 @@ /*********************************************************************** * Return the next byte in the pseudo-random sequence */ -static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab) -{ +static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab) { unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an * unpredictable manner on 16-bit systems; not a problem * with any known compiler so far, though */ + (void)pcrc_32_tab; temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2; return (int)(((temp * (temp ^ 1)) >> 8) & 0xff); } @@ -45,8 +45,7 @@ static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab) /*********************************************************************** * Update the encryption keys with the next byte of plain text */ -static int update_keys(unsigned long* pkeys,const z_crc_t* pcrc_32_tab,int c) -{ +static int update_keys(unsigned long* pkeys, const z_crc_t* pcrc_32_tab, int c) { (*(pkeys+0)) = CRC32((*(pkeys+0)), c); (*(pkeys+1)) += (*(pkeys+0)) & 0xff; (*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1; @@ -62,8 +61,7 @@ static int update_keys(unsigned long* pkeys,const z_crc_t* pcrc_32_tab,int c) * Initialize the encryption keys and the random header according to * the given password. */ -static void init_keys(const char* passwd,unsigned long* pkeys,const z_crc_t* pcrc_32_tab) -{ +static void init_keys(const char* passwd, unsigned long* pkeys, const z_crc_t* pcrc_32_tab) { *(pkeys+0) = 305419896L; *(pkeys+1) = 591751049L; *(pkeys+2) = 878082192L; @@ -77,24 +75,23 @@ static void init_keys(const char* passwd,unsigned long* pkeys,const z_crc_t* pcr (update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab))) #define zencode(pkeys,pcrc_32_tab,c,t) \ - (t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c)) + (t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), (Byte)t^(c)) #ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED #define RAND_HEAD_LEN 12 /* "last resort" source for second part of crypt seed pattern */ # ifndef ZCR_SEED2 -# define ZCR_SEED2 3141592654UL /* use PI as default pattern */ +# define ZCR_SEED2 3141592654UL /* use PI as default pattern */ # endif -static int crypthead(const char* passwd, /* password string */ - unsigned char* buf, /* where to write header */ - int bufSize, - unsigned long* pkeys, - const z_crc_t* pcrc_32_tab, - unsigned long crcForCrypting) -{ - int n; /* index in random header */ +static unsigned crypthead(const char* passwd, /* password string */ + unsigned char* buf, /* where to write header */ + int bufSize, + unsigned long* pkeys, + const z_crc_t* pcrc_32_tab, + unsigned long crcForCrypting) { + unsigned n; /* index in random header */ int t; /* temporary */ int c; /* random byte */ unsigned char header[RAND_HEAD_LEN-2]; /* random header */ |