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https://opencores.org/ocsvn/rc4-prbs/rc4-prbs/trunk
[/] [rc4-prbs/] [trunk/] [rc4.v] - Diff between revs 3 and 5
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| Rev 3 |
Rev 5 |
| Line 88... |
Line 88... |
end
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end
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`KSS_KEYSCHED2: begin // KSS_KEYSCHED2: Initialize S array
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`KSS_KEYSCHED2: begin // KSS_KEYSCHED2: Initialize S array
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j <= (j + S[i] + key[i % `KEY_SIZE]);
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j <= (j + S[i] + key[i % `KEY_SIZE]);
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KSState <= `KSS_KEYSCHED3;
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KSState <= `KSS_KEYSCHED3;
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end
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end
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`KSS_KEYSCHED3: begin
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`KSS_KEYSCHED3: begin // KSS_KEYSCHED3: S array permutation
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S[i]<=S[j];
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S[i]<=S[j];
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S[j]<=S[i];
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S[j]<=S[i];
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if (i == 8'hFF)
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if (i == 8'hFF)
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begin
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begin
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KSState <= `KSS_CRYPTO;
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KSState <= `KSS_CRYPTO;
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| Line 103... |
Line 103... |
i <= i + 1;
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i <= i + 1;
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KSState <= `KSS_KEYSCHED2;
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KSState <= `KSS_KEYSCHED2;
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end
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end
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end
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end
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`KSS_CRYPTO: begin // It was all nicely pipelined until this point where I don't care anymore
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`KSS_CRYPTO: begin // KSS_CRYPTO: Output crypto stream
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// It was all nicely pipelined until this point where I don't care anymore
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i = i + 1;
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i = i + 1;
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j = (j + S[i]);
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j = (j + S[i]);
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temp = S[j];
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temp = S[j];
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S[j]=S[i];
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S[j]=S[i];
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S[i]=temp;
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S[i]=temp;
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