Improve the implementation of the PDFDocument.fingerprints-getter
#17862
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calixteman
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Apr 1, 2024
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- Add explicit `length` validation of the /ID entries. Given the `EMPTY_FINGERPRINT` constant we're already *implicitly* assuming a particular length. - Move the constants into the `fingerprints`-getter, since they're not used anywhere else. - Replace the `hexString` helper function with the standard `Uint8Array.prototype.toHex` method; see https://github.com/tc39/proposal-arraybuffer-base64
…se64` usage in the main code-base See https://github.com/tc39/proposal-arraybuffer-base64
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This allows using the new methods in browsers that support them, e.g. Firefox 133+, while still providing fallbacks where necessary; see https://github.com/tc39/proposal-arraybuffer-base64 *Please note:* These are not actual polyfills, but only implements what we need in the PDF.js code-base. Eventually this patch should be reverted, once support is generally available.
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Add explicit
lengthvalidation of the /ID entries. Given theEMPTY_FINGERPRINTconstant we're already implicitly assuming a particular length.Move the constants into the
fingerprints-getter, since they're not used anywhere else.Replace the
hexStringhelper function with the standardUint8Array.prototype.toHexmethod; see https://github.com/tc39/proposal-arraybuffer-base64