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Merge pull request #19555 from rossj/master

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Pad rev 4 encryption keys to be >= 16 bytes (issue 19484)
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Jonas Jenwald 2025-02-25 10:03:56 +01:00 • committed by GitHub
commit aa70b28365
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5 changed files with 26 additions and 1 deletions
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src/core/crypto.js
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@ -1787,7 +1787,14 @@ class CipherTransformFactory {
);
}
this.encryptionKey = encryptionKey;
if (algorithm === 4 && encryptionKey.length < 16) {
// Extend key to 16 byte minimum (undocumented),
// fixes issue19484_1.pdf and issue19484_2.pdf.
this.encryptionKey = new Uint8Array(16);
this.encryptionKey.set(encryptionKey);
} else {
this.encryptionKey = encryptionKey;
}
if (algorithm >= 4) {
const cf = dict.get("CF");