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POEncrypt message with Cryptico public key using PHP
 

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  1. POEncrypt message with Cryptico public key using PHP
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    <p>Is it possible to generate an RSA public key from a passphrase using <a href="https://github.com/wwwtyro/cryptico" rel="nofollow">Cryptico</a>, then use PHP to encrypt a message with that public key, and decrypt it with JavaScrpt using the original passphrase?</p> <p>Cryptico seems to work great on its own, but I'm trying to use phpseclib to encrypt a message using the public key that Cryptico generated and i'm not getting an output. Even if I did, would I be able to base64 encode it and decrypt it with Cryptico?</p> <p>Using the passphase "stackoverflow rocks" with Bits set to 1024 I get this public key:</p> <p><code>XEjrqvt5K3pjM2m98ZFQOf9fObVNKPJQ9TYbo4sdNPaUO0NKdLtno8hXa292MiAmwip9JOiplmSQVEvpEnfebGNFFzqNgd4hAS6oXD6zHexVHsHpFTYxfVFQE93eHtbz0Mi7l64rnq6UOQKAB53CXVUev6RqyR6hs4oBiJRAOCs=</code></p> <p>But when I use the following code with or without the PKCS1 line, I get no output. <pre><code>$rsa = new Crypt_RSA(); $rsa-&gt;loadKey('XEjrqvt5K3pjM2m98ZFQOf9fObVNKPJQ9TYbo4sdNPaUO0NKdLtno8hXa292MiAmwip9JOiplmSQVEvpEnfebGNFFzqNgd4hAS6oXD6zHexVHsHpFTYxfVFQE93eHtbz0Mi7l64rnq6UOQKAB53CXVUev6RqyR6hs4oBiJRAOCs='); // public key $plaintext = 'tester'; $rsa-&gt;setEncryptionMode(CRYPT_RSA_ENCRYPTION_PKCS1); $ciphertext = $rsa-&gt;encrypt($plaintext); echo $ciphertext; ?&gt; </code></pre> <p>Does anyone know what i'm missing to make this work? - Or is this impossible and i'm wasting my time?</p> <p>EDIT: ------------ Code i'm using re owlstead's comment ------------- Tried with and without the PKCS1 line</p> <pre><code>&lt;?php include('Crypt/RSA.php'); $rsa = new Crypt_RSA(); $rsa-&gt;loadKey('-----BEGIN PUBLIC KEY----- XEjrqvt5K3pjM2m98ZFQOf9fObVNKPJQ9TYbo4sdNPaUO0NKdLtno8hXa292MiAmwip9JOiplmSQVEvpEnfebGNFFzqNgd4hAS6oXD6zHexVHsHpFTYxfVFQE93eHtbz0Mi7l64rnq6UOQKAB53CXVUev6RqyR6hs4oBiJRAOCs= -----END PUBLIC KEY-----'); // public key $plaintext = 'tester'; $rsa-&gt;setEncryptionMode(CRYPT_RSA_ENCRYPTION_PKCS1); $ciphertext = $rsa-&gt;encrypt($plaintext); echo $ciphertext; ?&gt; </code></pre>
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    1. COTO ANY READERS: DO NOT USE THE CRYPTICO LIBRARY, IT HAS MULTIPLE SECURITY ISSUES AND MISCONCEPTIONS
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