import IllegalArgumentException from '../../../IllegalArgumentException';
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import ArithmeticException from '../../../ArithmeticException';
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export default class ModulusBase {
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add(a, b) {
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return (a + b) % this.modulus;
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}
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subtract(a, b) {
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return (this.modulus + a - b) % this.modulus;
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}
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exp(a) {
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return this.expTable[a];
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}
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log(a) {
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if (a === 0) {
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throw new IllegalArgumentException();
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}
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return this.logTable[a];
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}
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inverse(a) {
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if (a === 0) {
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throw new ArithmeticException();
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}
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return this.expTable[this.modulus - this.logTable[a] - 1];
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}
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multiply(a, b) {
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if (a === 0 || b === 0) {
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return 0;
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}
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return this.expTable[(this.logTable[a] + this.logTable[b]) % (this.modulus - 1)];
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}
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getSize() {
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return this.modulus;
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}
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equals(o) {
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return o === this;
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}
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}
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