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account for output buffer being smaller than entropy pool

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git-svn-id: svn://svn.code.sf.net/p/axtls/code/trunk@168 9a5d90b5-6617-0410-8a86-bb477d3ed2e3
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cameronrich
2010-05-01 04:56:01 +00:00
parent c484a1ee72
commit fe927a6d0e
1 changed files with 2 additions and 1 deletions
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3
crypto/crypto_misc.c
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@ -196,7 +196,8 @@ EXP_FUNC void STDCALL get_random(int num_rand_bytes, uint8_t *rand_data)
/* come up with the random sequence */
RC4_setup(&rng_ctx, digest, MD5_SIZE); /* use as a key */
memcpy(rand_data, entropy_pool, ENTROPY_POOL_SIZE);
memcpy(rand_data, entropy_pool, num_rand_bytes < ENTROPY_POOL_SIZE ?
num_rand_bytes : ENTROPY_POOL_SIZE);
RC4_crypt(&rng_ctx, rand_data, rand_data, num_rand_bytes);
/* move things along */