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Consider signatures with invalid or small-order elements invalid #21

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merged 1 commit into from
Jun 21, 2023
Merged

Consider signatures with invalid or small-order elements invalid #21

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26 changes: 26 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -1867,6 +1867,19 @@ <h4>Operations</h4>
|key| is not {{KeyType/"public"}}, then [= exception/throw =] an {{InvalidAccessError}}.
</p>
</li>
<li>
<p>
If the key data of |key| represents an invalid point or a small-order element
on the Elliptic Curve of Ed25519, return `false`.
</p>
</li>
<li>
<p>
If the point R, encoded in the first half of |signature|,
represents an invalid point or a small-order element
on the Elliptic Curve of Ed25519, return `false`.
</p>
</li>
<li>
<p>
Perform the Ed25519 verification steps, as specified in [[RFC8032]],
Expand Down Expand Up @@ -2760,6 +2773,19 @@ <h4>Operations</h4>
then [= exception/throw =] an {{OperationError}}.
</p>
</li>
<li>
<p>
If the key data of |key| represents an invalid point or a small-order element
on the Elliptic Curve of Ed448, return `false`.
</p>
</li>
<li>
<p>
If the point R, encoded in the first half of |signature|,
represents an invalid point or a small-order element
on the Elliptic Curve of Ed448, return `false`.
</p>
</li>
<li>
<p>
Perform the Ed448 verification steps, as specified in [[RFC8032]],
Expand Down