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algos_enc: padding fix

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I have indeed heard that everyone always fucks this up and therefore
kindof hoped to make an exception. Lasted two minutes.
This commit is contained in:
Mirek Kratochvil 2013-01-17 12:08:40 +01:00
parent c345408cc8
commit 0b487201ff
1 changed files with 3 additions and 2 deletions
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5
src/algos_enc.cpp
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@ -107,16 +107,17 @@ static void message_pad (const bvector&in, std::vector<byte>&out, prng&rng)
//byte stage
int overflow = out.size() & 0xff;
int pad_block_start = out.size() >> 8;
int pad_block_start_byte = pad_block_start << 8;
//make space for the bytes
out.resize ( (pad_block_start + 1) << 8, 0);
//fill random bytes
for (i = overflow; i < 0xff; ++i)
out[i + pad_block_start] = rng.random (256);
out[i + pad_block_start_byte] = rng.random (256);
//fill the overflow size byte
out[pad_block_start + 0xff] = overflow;
out[pad_block_start_byte + 0xff] = overflow;
}
static bool message_unpad (const std::vector<byte>&in, bvector&out)