Did scan and saying eval functions in Snapshot PHP plugin code?

Hi there, I did a scan using Stop Spammers (latest Version 6.07) and it is saying there is eval functions in the Snapshot PHP plugin code.

It said "These are warnings, only. Some content and plugins might not be malicious, but still contain one or more of these indicators. Please investigate all indications of problems. The plugin may err on the side of caution.

Although there are legitimate reasons for using the eval function, and javascript uses it frequently, finding eval in PHP code is in the very least bad practice, and the worst is used to hide malicious code. If eval() comes up in a scan, try to get rid of it."

So if it's bad practice to use it in PHP, could you find a way to recode the PHP please.

Here is what the scan found:
/../wp-content/plugins/snapshot/lib/destinations/ftp/phpseclib0.2.2/Net/SSH2.php
1066: $this->exchange_hash = pack('H*', $hash($this->exchange_hash));
1169: $iv = pack('H*', $hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id));
1171: $iv.= pack('H*', $hash($keyBytes . $this->exchange_hash . $iv));
1175: $key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'C' . $this->session_id));
1177: $key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key));
1186: $iv = pack('H*', $hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id));
1188: $iv.= pack('H*', $hash($keyBytes . $this->exchange_hash . $iv));
1192: $key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'D' . $this->session_id));
1194: $key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key));
1268: $key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'E' . $this->session_id));
1270: $key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key));
1274: $key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'F' . $this->session_id));
1276: $key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key));
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/sdk.class.php
485: return new $self($options);
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/lib/cachecore/cachecore.class.php
92: return new $self($name, $location, $expires, $gzip);
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/utilities/array.class.php
72: return new $self($input, $flags, $iterator_class);
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/utilities/stepconfig.class.php
68: return new $self($config);
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/utilities/credential.class.php
41: * @return mixed The results of calling the function $name(), or the value of the key $object[$name].
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/utilities/simplexml.class.php
115: return new $self($data, $options, $data_is_url, $ns, $is_prefix);
/../wp-content/plugins/snapshot/lib/destinations/aws/AWSSDKforPHP/utilities/policy.class.php
81: return new $self($auth, $policy);
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/sdk.class.php
485: return new $self($options);
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/lib/cachecore/cachecore.class.php
92: return new $self($name, $location, $expires, $gzip);
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/utilities/array.class.php
72: return new $self($input, $flags, $iterator_class);
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/utilities/stepconfig.class.php
68: return new $self($config);
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/utilities/credential.class.php
41: * @return mixed The results of calling the function $name(), or the value of the key $object[$name].
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/utilities/simplexml.class.php
115: return new $self($data, $options, $data_is_url, $ns, $is_prefix);
/../wp-content/plugins/snapshot/lib/destinations/greenqloud/AWSSDKforPHP/utilities/policy.class.php
81: return new $self($auth, $policy);