| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.default = validateSignature;
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| 4 | const node_buffer_1 = require("node:buffer");
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| 5 | const node_crypto_1 = require("node:crypto");
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| 6 | function s2b(str, encoding) {
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| 7 | return node_buffer_1.Buffer.from(str, encoding);
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| 8 | }
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| 9 | function safeCompare(a, b) {
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| 10 | if (a.length !== b.length) {
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| 11 | return false;
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| 12 | }
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| 13 | return (0, node_crypto_1.timingSafeEqual)(a, b);
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| 14 | }
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| 15 | function validateSignature(body, channelSecret, signature) {
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| 16 | return safeCompare((0, node_crypto_1.createHmac)("SHA256", channelSecret).update(body).digest(), s2b(signature, "base64"));
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| 17 | }
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| 18 | |
| \ | No newline at end of file |