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fix: fix gcm tag length truncation #845

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fix: fix gcm tag length truncation #845

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fix: fix gcm tag length truncation
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@DasDingGehtNicht
DasDingGehtNicht committed Feb 11, 2021
commit 7ce5ad1e78ad8c706539e787da2341f4f55df7cf
2 changes: 1 addition & 1 deletion lib/cipherModes.js
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Original file line number Diff line number Diff line change
Expand Up @@ -756,7 +756,7 @@ modes.gcm.prototype.afterFinish = function(output, options) {
}

// trim tag to length
this.tag.truncate(this.tag.length() % (this._tagLength / 8));
this.tag.truncate(this.tag.length() - (this._tagLength / 8));

// check authentication tag
if(options.decrypt && this.tag.bytes() !== this._tag) {
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