Vlad Durnea
cffdf8af86
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45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
/**
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* Internal helpers for blake hash.
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* @module
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*/
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import { rotr } from "./utils.js";
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/**
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* Internal blake variable.
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* For BLAKE2b, the two extra permutations for rounds 10 and 11 are SIGMA[10..11] = SIGMA[0..1].
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*/
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// prettier-ignore
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export const BSIGMA = /* @__PURE__ */ Uint8Array.from([
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3,
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11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4,
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7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8,
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9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13,
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2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9,
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12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11,
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13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10,
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6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5,
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10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3,
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// Blake1, unused in others
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11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4,
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7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8,
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9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13,
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2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9,
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]);
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// Mixing function G splitted in two halfs
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export function G1s(a, b, c, d, x) {
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a = (a + b + x) | 0;
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d = rotr(d ^ a, 16);
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c = (c + d) | 0;
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b = rotr(b ^ c, 12);
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return { a, b, c, d };
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}
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export function G2s(a, b, c, d, x) {
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a = (a + b + x) | 0;
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d = rotr(d ^ a, 8);
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c = (c + d) | 0;
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b = rotr(b ^ c, 7);
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return { a, b, c, d };
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}
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//# sourceMappingURL=_blake.js.map
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