# CustomCodeSigning
<a name="API_CustomCodeSigning"></a>

Describes a custom method used to code sign a file.

## Contents
<a name="API_CustomCodeSigning_Contents"></a>

 ** certificateChain **   <a name="iot-Type-CustomCodeSigning-certificateChain"></a>
The certificate chain.  
Type: [CodeSigningCertificateChain](API_CodeSigningCertificateChain.md) object  
Required: No

 ** hashAlgorithm **   <a name="iot-Type-CustomCodeSigning-hashAlgorithm"></a>
The hash algorithm used to code sign the file. You can use a string as the algorithm name if the target over-the-air (OTA) update devices are able to verify the signature that was generated using the same signature algorithm. For example, FreeRTOS uses `SHA256` or `SHA1`, so you can pass either of them based on which was used for generating the signature.  
Type: String  
Required: No

 ** signature **   <a name="iot-Type-CustomCodeSigning-signature"></a>
The signature for the file.  
Type: [CodeSigningSignature](API_CodeSigningSignature.md) object  
Required: No

 ** signatureAlgorithm **   <a name="iot-Type-CustomCodeSigning-signatureAlgorithm"></a>
The signature algorithm used to code sign the file. You can use a string as the algorithm name if the target over-the-air (OTA) update devices are able to verify the signature that was generated using the same signature algorithm. For example, FreeRTOS uses `ECDSA` or `RSA`, so you can pass either of them based on which was used for generating the signature.  
Type: String  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iot-2015-05-28/CustomCodeSigning) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-2015-05-28/CustomCodeSigning) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-2015-05-28/CustomCodeSigning)