Facing issue in validating the signature of the xml file.

[sdpatel1026]

I use below code to verify the signature of the xml file. But, it gives me error:- Could not verify certificate against trusted certs

func ValidateXMLSignature(xmlData []byte, publicKey string) (bool, error) {
	doc := etree.NewDocument()
	err := doc.ReadFromBytes(xmlData)
	if err != nil {
		return false, err
	}
        block, _ := pem.Decode([]byte(aadhaarLatestPublicKey))
	pub, err := x509.ParseCertificate(block.Bytes)
	if err != nil {
		return false, err
	}
	ctx := goxmldsig.NewDefaultValidationContext(&goxmldsig.MemoryX509CertificateStore{
		Roots: []*x509.Certificate{pub},
	})
	if el := doc.FindElement("OfflinePaperlessKyc"); el != nil {
		_, err = ctx.Validate(el)
		if err != nil {
			helpers.Logger.Errorf("error in validating xml signature:%s", err.Error())
			return false, nil
		}
		return true, nil
	}
	return false, nil
}
const aadhaarLatestPublicKey = `-----BEGIN CERTIFICATE-----
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
-----END CERTIFICATE-----`

Format of the xml file:-

<OfflinePaperlessKyc referenceId="">
<UidData>
<Poi dob="" gender="" name="" e="" m=""/>
<Poa careof="" country="" dist="" house="" loc="" pc="" po="" state="" street="" subdist="" vtc="" />
<Pht></Pht>
</UidData>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
<Reference URI="">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
<DigestValue></DigestValue>
</Reference>
</SignedInfo>
<SignatureValue></SignatureValue>
<KeyInfo>
</KeyInfo>
</Signature>

</OfflinePaperlessKyc>```