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32 lines
986 B
Plaintext
32 lines
986 B
Plaintext
import { isoBase64URL } from './iso/index.js';
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/**
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* Convert buffer to an OpenSSL-compatible PEM text format.
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*/
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export function convertCertBufferToPEM(certBuffer) {
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let b64cert;
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/**
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* Get certBuffer to a base64 representation
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*/
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if (typeof certBuffer === 'string') {
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if (isoBase64URL.isBase64URL(certBuffer)) {
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b64cert = isoBase64URL.toBase64(certBuffer);
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}
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else if (isoBase64URL.isBase64(certBuffer)) {
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b64cert = certBuffer;
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}
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else {
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throw new Error('Certificate is not a valid base64 or base64url string');
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}
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}
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else {
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b64cert = isoBase64URL.fromBuffer(certBuffer, 'base64');
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}
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let PEMKey = '';
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for (let i = 0; i < Math.ceil(b64cert.length / 64); i += 1) {
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const start = 64 * i;
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PEMKey += `${b64cert.substr(start, 64)}\n`;
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}
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PEMKey = `-----BEGIN CERTIFICATE-----\n${PEMKey}-----END CERTIFICATE-----\n`;
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return PEMKey;
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}
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