RSA Security Home Security System 4.3 Manuel d'utilisateur télécharger pdf (Page 26)

Generating Random Numbers

22 RSA BSAFE Crypto-C Intel Hardware User’s Guide

call would be identical in a software implementation:

Step 5: Generate Random Numbers

Before calling B_GenerateRandomBytes, prepare a buffer for receiving the random

bytes. This is a little different than the software implementation.

Now you can generate the random bytes. Since generating 128 bytes is quick, you can

use a

NULL_PTR for the surrender context:

Step 6: Destroy all Objects

Remember to destroy all objects when you are done with them, and free all memory.

Again, this is identical to the software implementation:

if ((status = B_RandomUpdate

(randomAlgorithm, randomSeed, randomSeedLen,

(A_SURRENDER_CTX *)NULL_PTR)) != 0)

break;

randomByteBuffer = T_malloc (BYTES_TO_GENERATE);

if ((status = (randomByteBuffer == NULL_PTR)) != 0)

break;

T_memset (randomByteBuffer, 0, BYTES_TO_GENERATE);

if ((status = B_GenerateRandomBytes

(randomAlgorithm, randomByteBuffer, BYTES_TO_GENERATE,

(A_SURRENDER_CTX *)NULL_PTR)) != 0)

break;

B_DestroyAlgorithmObject (&randomAlgorithm);

T_memset (randomSeed, 0, randomSeedLen);

T_free (randomSeed);

T_free (randomByteBuffer);

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RSA Security Home Security System 4.3 Manuel d'utilisateur Page 26