<a name="0x1_Signature"></a>

Module 0x1::Signature

Contains functions for ed25519 digital signatures.

• Function ed25519_validate_pubkey
• Function ed25519_verify

<pre><code></code></pre>

<a name="0x1_Signature_ed25519_validate_pubkey"></a>

Function ed25519_validate_pubkey

Return <code><b>true</b></code> if the bytes in <code>public_key</code> can be parsed as a valid Ed25519 public key. Returns <code><b>false</b></code> if <code>public_key</code> is not 32 bytes OR is 32 bytes, but does not pass points-on-curve or small subgroup checks. See the Rust <code>diem_crypto::Ed25519PublicKey</code> type for more details. Does not abort.

<pre><code><b>public</b> <b>fun</b> <a href="Signature.md#0x1_Signature_ed25519_validate_pubkey">ed25519_validate_pubkey</a>(public_key: vector&lt;u8&gt;): bool </code></pre> <details> <summary>Implementation</summary> <pre><code><b>native</b> <b>public</b> <b>fun</b> <a href="Signature.md#0x1_Signature_ed25519_validate_pubkey">ed25519_validate_pubkey</a>(public_key: vector&lt;u8&gt;): bool; </code></pre> </details>

<a name="0x1_Signature_ed25519_verify"></a>

Function ed25519_verify

Return true if the Ed25519 <code>signature</code> on <code>message</code> verifies against the Ed25519 public key <code>public_key</code>. Returns <code><b>false</b></code> if:

• <code>signature</code> is not 64 bytes
• <code>public_key</code> is not 32 bytes
• <code>public_key</code> does not pass points-on-curve or small subgroup checks,
• <code>signature</code> and <code>public_key</code> are valid, but the signature on <code>message</code> does not verify. Does not abort.

<pre><code><b>public</b> <b>fun</b> <a href="Signature.md#0x1_Signature_ed25519_verify">ed25519_verify</a>(signature: vector&lt;u8&gt;, public_key: vector&lt;u8&gt;, message: vector&lt;u8&gt;): bool </code></pre> <details> <summary>Implementation</summary> <pre><code><b>native</b> <b>public</b> <b>fun</b> <a href="Signature.md#0x1_Signature_ed25519_verify">ed25519_verify</a>( signature: vector&lt;u8&gt;, public_key: vector&lt;u8&gt;, message: vector&lt;u8&gt; ): bool; </code></pre> </details>