Quote from: gmaxwell on January 28, 2013, 04:44:32 AM

Quote from: pcm81 on January 28, 2013, 04:19:35 AM

Congratulations, you programmed an FPGA. This is not the same as designing a true ASIC implementation.

No, I actually produced fab ready images for a particular process that I had access to a cell library for, I was in fact specific about this in my post. Geesh. You're trying my patience

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1. In regards to export license, see the link i provided above. SHA-256 requires export license to China.

The link you provided is incorrect or overly generalized. I have exported products to china commercially which implemented HMAC for authentication. It does not require a license.

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Step 1, generate random contents
Step 2, hash it
Step 3, compare to a known hash. If matches you done, if does not match loop to step 1.

You have omitted step [2a] "Has the sun stopped shining yet?" ... what you are describing does not actually work in practice for the same reason that hashes are practically secure.

Congratulations, you may have broken US law.
See item #10
csrc.nist.gov/publications/fips/fips198-1/FIPS-198-1_final.pdf

If SHA algorithm you used was not for 256 bits, it may not have required license.