The seed is encoded as a WIF private key. Decoding as WIF will result in the 32 byte seed that can be used as specified in BIP 32.<div><br /></div><div><br /></div><div><br /></div>Andrew<div><br /></div><div><br /></div><div><br /></div><br>-------- Original Message --------<br>On Apr 5, 2022, 6:55 PM, Tobin Harding via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote:<blockquote class="protonmail_quote"><br><p dir="ltr">Hi,</p>
<p dir="ltr">Does anyone have software that successfully parses the extended private key seed<br>
found in the BIP174 test vector? I have been implementing the test vector PSBT<br>
workflow in Rust and have everything working except I can only create the<br>
extended private key from the xpriv, I am unable to use the seed to create it?</p>
<p dir="ltr">BIP174: <a href="https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki#test-vectors">https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki#test-vectors</a></p>
<p dir="ltr">PSBT workflow in BIP174 starting at the line:</p>
<p dir="ltr">"The private keys in the tests below are derived from the following master private key:"</p>
<p dir="ltr">xpriv:</p>
<p dir="ltr">tprv8ZgxMBicQKsPd9TeAdPADNnSyH9SSUUbTVeFszDE23Ki6TBB5nCefAdHkK8Fm3qMQR6sHwA56zqRmKmxnHk37JkiFzvncDqoKmPWubu7hDF</p>
<p dir="ltr">seed:</p>
<p dir="ltr">cUkG8i1RFfWGWy5ziR11zJ5V4U4W3viSFCfyJmZnvQaUsd1xuF3T</p>
<p dir="ltr">I've tried decoding it as base64 and as base58.</p>
<p dir="ltr">Thanks in advance,<br>
Tobin.<br>
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