Revision f522310b libavutil/sha1.c

View differences:

libavutil/sha1.c
34 34 
#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
35 35 

  		




  36
  36
  
    
/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */


  		




  37
  
  
    
#define blk0(i) (block[i] = be2me_32(((uint32_t*)buffer)[i]))


  		




  
  37
  
    
#define blk0(i) (block[i] = be2me_32(((const uint32_t*)buffer)[i]))


  		




  38
  38
  
    
#define blk(i) (block[i] = rol(block[i-3]^block[i-8]^block[i-14]^block[i-16],1))


  		




  39
  39
  
    

  		




  40
  40
  
    
#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)    +blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);


  		




  ......




  45
  45
  
    

  		




  46
  46
  
    
/* Hash a single 512-bit block. This is the core of the algorithm. */


  		




  47
  47
  
    

  		




  48
  
  
    
static void transform(uint32_t state[5], uint8_t buffer[64]){


  		




  
  48
  
    
static void transform(uint32_t state[5], const uint8_t buffer[64]){


  		




  49
  49
  
    
    uint32_t block[80];


  		




  50
  50
  
    
    unsigned int i, a, b, c, d, e;


  		




  51
  51
  
    

  		




  ......




  105
  105
  
    
    ctx->count    = 0;


  		




  106
  106
  
    
}


  		




  107
  107
  
    

  		




  108
  
  
    
void av_sha1_update(AVSHA1* ctx, uint8_t* data, unsigned int len){


  		




  
  108
  
    
void av_sha1_update(AVSHA1* ctx, const uint8_t* data, unsigned int len){


  		




  109
  109
  
    
    unsigned int i, j;


  		




  110
  110
  
    

  		




  111
  111
  
    
    j = ctx->count & 63;


  		












Also available in:  Unified diff