27 lines
1.1 KiB
JavaScript
27 lines
1.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.chacha20 = exports.xchacha20 = void 0;
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var utils_1 = require("@noble/ciphers/utils");
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var compat_1 = require("../_node/compat");
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var hchacha_1 = require("../_node/hchacha");
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var xchacha20 = function (key, nonce, AAD) {
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if (nonce.length !== 24) {
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throw new Error("xchacha20's nonce must be 24 bytes");
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}
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var constants = new Uint32Array([0x61707865, 0x3320646e, 0x79622d32, 0x6b206574]); // "expand 32-byte k"
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var subKey = new Uint32Array(8);
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(0, hchacha_1._hchacha20)(constants, (0, utils_1.u32)(key), (0, utils_1.u32)(nonce.subarray(0, 16)), subKey);
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var subNonce = new Uint8Array(12);
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subNonce.set([0, 0, 0, 0]);
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subNonce.set(nonce.subarray(16), 4);
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return (0, compat_1._compat)("chacha20-poly1305", (0, utils_1.u8)(subKey), subNonce, AAD);
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};
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exports.xchacha20 = xchacha20;
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var chacha20 = function (key, nonce, AAD) {
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if (nonce.length !== 12) {
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throw new Error("chacha20's nonce must be 12 bytes");
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}
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return (0, compat_1._compat)("chacha20-poly1305", key, nonce, AAD);
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};
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exports.chacha20 = chacha20;
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