(gcrypt.info.gz) Retrieving random numbers

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(gcrypt.info.gz) Quality of random numbers

(gcrypt.info.gz) Random Numbers

 
 9.2 Retrieving random numbers
 =============================
 
  -- Function: void gcry_randomize (unsigned char *BUFFER, size_t
           LENGTH, enum gcry_random_level LEVEL)
      Fill BUFFER with LENGTH random bytes using a random quality as
      defined by LEVEL.
 
  -- Function: void * gcry_random_bytes (size_t NBYTES, enum
           gcry_random_level LEVEL)
      Allocate a memory block consisting of NBYTES fresh random bytes
      using a random quality as defined by LEVEL.
 
  -- Function: void * gcry_random_bytes_secure (size_t NBYTES, enum
           gcry_random_level LEVEL)
      Allocate a memory block consisting of NBYTES fresh random bytes
      using a random quality as defined by LEVEL.  This function differs
      from `gcry_random_bytes' in that the returned buffer is allocated
      in a "secure" area of the memory.
 
  -- Function: void gcry_create_nonce (void *BUFFER, size_t LENGTH)
      Fill BUFFER with LENGTH unpredictable bytes.  This is commonly
      called a nonce and may also be used for initialization vectors and
      padding.  This is an extra function nearly independent of the
      other random function for 3 reasons: It better protects the
      regular random generator's internal state, provides better
      performance and does not drain the precious entropy pool.
 
 

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(gcrypt.info.gz) Quality of random numbers

(gcrypt.info.gz) Random Numbers