1.5 CRYPT_RNG_BlockGenerate Function

C

int CRYPT_RNG_BlockGenerate(
CRYPT_RNG_CTX* rng,
unsigned char* b,
unsigned int sz
);

Description

This function generates several random numbers and places them in the space allocated.

Preconditions

RNG context was initialized using the CRYPT_RNG_Initialize function.

Parameters

ParametersDescription
rngPointer to context which saves state between calls
bPointer to buffer to store the random numbers
szNumber of 8-bit random numbers to generate

Returns

  • BAD_FUNC_ARG - An invalid pointer was passed to the function
  • 0 - An invalid pointer was not passed to the function

Remarks

None.

Example

#define RANDOM_BYTE_SZ 32

int           ret;
CRYPT_RNG_CTX mcRng;
byte          out[RANDOM_BYTE_SZ];

ret = CRYPT_RNG_Initialize(&mcRng);
ret = CRYPT_RNG_Get(&mcRng, &out[0]);
ret = CRYPT_RNG_BlockGenerate(&mcRng, out, RANDOM_BYTE_SZ);
ret = CRYPT_RNG_Deinitialize(&mcRng);