Completed
Pull Request — master (#4)
by Risan Bagja
02:18 queued 51s
created

extractAlphaNumericFromBase64EncodedString()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 2

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 4
rs 10
c 0
b 0
f 0
cc 1
eloc 2
nc 1
nop 1
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<?php
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namespace Risan\OAuth1\Request;
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class NonceGenerator implements NonceGeneratorInterface
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{
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    /**
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     * {@inheritDoc}
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     */
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    public function generate($length = 32)
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    {
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        $nonce = '';
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        while (($currentNonceLength = strlen($nonce)) < $length) {
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            $size = $length - $currentNonceLength;
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            $randomString = $this->base64EncodedRandomBytes($size);
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            $nonce .= substr($this->extractAlphaNumericFromBase64EncodedString($randomString), 0, $size);
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        }
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        return $nonce;
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    }
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    /**
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     * Get cryptographically secure base64 encoded random bytes.
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     *
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     * @param  int $length
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     * @return string
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     */
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    public function base64EncodedRandomBytes($length)
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    {
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        return base64_encode(random_bytes($length));
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    }
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    /**
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     * Extract the alphanumeric characters from base64 encoded string.
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     *
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     * @param  string $string
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     * @return string
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     */
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    public function extractAlphaNumericFromBase64EncodedString($string)
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    {
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        return str_replace(['/', '+', '='], '', $string);
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    }
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}
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