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This makes it easier to spot syntax errors when editing the class reference. The schema is referenced locally so validation can still work offline. Each class XML's schema conformance is also checked on GitHub Actions.
81 lines
2.8 KiB
XML
81 lines
2.8 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="HMACContext" inherits="RefCounted" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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Used to create an HMAC for a message using a key.
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</brief_description>
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<description>
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The HMACContext class is useful for advanced HMAC use cases, such as streaming the message as it supports creating the message over time rather than providing it all at once.
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[codeblocks]
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[gdscript]
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extends Node
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var ctx = HMACContext.new()
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func _ready():
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var key = "supersecret".to_utf8()
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var err = ctx.start(HashingContext.HASH_SHA256, key)
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assert(err == OK)
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var msg1 = "this is ".to_utf8()
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var msg2 = "super duper secret".to_utf8()
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err = ctx.update(msg1)
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assert(err == OK)
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err = ctx.update(msg2)
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assert(err == OK)
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var hmac = ctx.finish()
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print(hmac.hex_encode())
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[/gdscript]
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[csharp]
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using Godot;
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using System;
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using System.Diagnostics;
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public class CryptoNode : Node
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{
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private HMACContext ctx = new HMACContext();
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public override void _Ready()
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{
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PackedByteArray key = String("supersecret").to_utf8();
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Error err = ctx.Start(HashingContext.HASH_SHA256, key);
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GD.Assert(err == OK);
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PackedByteArray msg1 = String("this is ").to_utf8();
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PackedByteArray msg2 = String("super duper secret").to_utf8();
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err = ctx.Update(msg1);
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GD.Assert(err == OK);
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err = ctx.Update(msg2);
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GD.Assert(err == OK);
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PackedByteArray hmac = ctx.Finish();
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GD.Print(hmac.HexEncode());
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}
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}
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[/csharp]
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[/codeblocks]
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[b]Note:[/b] Not available in HTML5 exports.
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="finish">
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<return type="PackedByteArray" />
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<description>
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Returns the resulting HMAC. If the HMAC failed, an empty [PackedByteArray] is returned.
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</description>
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</method>
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<method name="start">
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<return type="int" enum="Error" />
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<argument index="0" name="hash_type" type="int" enum="HashingContext.HashType" />
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<argument index="1" name="key" type="PackedByteArray" />
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<description>
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Initializes the HMACContext. This method cannot be called again on the same HMACContext until [method finish] has been called.
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</description>
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</method>
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<method name="update">
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<return type="int" enum="Error" />
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<argument index="0" name="data" type="PackedByteArray" />
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<description>
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Updates the message to be HMACed. This can be called multiple times before [method finish] is called to append [code]data[/code] to the message, but cannot be called until [method start] has been called.
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</description>
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</method>
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</methods>
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</class>
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