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I2P: End-to-End encrypted and anonymous Internet
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28 lines
567 B
28 lines
567 B
q = 2**255 - 19 |
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def expmod(b,e,m): |
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if e == 0: return 1 |
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t = expmod(b,e/2,m)**2 % m |
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if e & 1: t = (t*b) % m |
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return t |
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def inv(x): |
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return expmod(x,q-2,q) |
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def radix255(x): |
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x = x % q |
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if x + x > q: x -= q |
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x = [x,0,0,0,0,0,0,0,0,0] |
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bits = [26,25,26,25,26,25,26,25,26,25] |
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for i in range(9): |
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carry = (x[i] + 2**(bits[i]-1)) / 2**bits[i] |
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x[i] -= carry * 2**bits[i] |
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x[i + 1] += carry |
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result = "" |
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for i in range(9): |
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result = result+str(x[i])+"," |
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result = result+str(x[9]) |
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return result |
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d = -121665 * inv(121666) |
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print radix255(d*2)
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