Annotated edit history of
ElGamal version 1 showing authors affecting page license.
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CraigMckenna |
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ElGamal cryptosystem: |
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Let p be a prime so that the discrete log problem in Zp is 'intractable' ;let 'a' be a primitive element modulo p and b=a''s'' (mod p )for some s. |
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Keep s secret;make p,a,b public. |
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A message x is to e encrypted as an ordered pair |
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(a''k'' (mod p ),xb''k'' (mod p )) |
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where k is a (secret)random number chosen (for one use only) by the encoder. |
