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// To use those functions below
// You need to import CommonCrypto.h in your bridging header.
// #import <CommonCrypto/CommonCrypto.h>

func
DataCryptedByAES( operation: CCOperation, p: NSData, key: NSData, _ options: CCOptions = CCOptions( kCCOptionPKCS7Padding ), _ iv: NSData? = nil ) -> ( CCCryptorStatus, NSData ) {
var wKeyLength = 0
if key.length < kCCKeySizeAES128 { assert( false ) }
else if key.length < kCCKeySizeAES192 { wKeyLength = kCCKeySizeAES128 }
else if key.length < kCCKeySizeAES256 { wKeyLength = kCCKeySizeAES192 }
else { wKeyLength = kCCKeySizeAES256 }

if iv != nil { assert( iv!.length == kCCBlockSizeAES128 ) }

var	wLength = UInt( ( ( p.length + kCCBlockSizeAES128 - 1 ) / kCCBlockSizeAES128 ) * kCCBlockSizeAES128 )
let	v = NSMutableData( length: Int( wLength ) )!
let	s: CCCryptorStatus = CCCrypt(
	operation
,	CCAlgorithm( kCCAlgorithmAES )
,	options
,	key.bytes
,	UInt( wKeyLength )
,	iv != nil ? iv!.bytes : nil
,	p.bytes
,	UInt( p.length )
,	v.mutableBytes
,	wLength
,	&wLength
)
v.length = Int( wLength )
return ( s, v )

}

func
DataEncryptedByAES( p: NSData, key: NSData, _ options: CCOptions = CCOptions( kCCOptionPKCS7Padding ), _ iv: NSData? = nil ) -> ( CCCryptorStatus, NSData ) {
return DataCryptedByAES( CCOperation( kCCEncrypt ), p, key, options, iv )
}

func
DataDecryptedByAES( p: NSData, key: NSData, _ options: CCOptions = CCOptions( kCCOptionPKCS7Padding ), _ iv: NSData? = nil ) -> ( CCCryptorStatus, NSData ) {
return DataCryptedByAES( CCOperation( kCCDecrypt ), p, key, options, iv )
}

func
DataCryptedByBlowfish( operation: CCOperation, p: NSData, key: NSData, _ options: CCOptions = CCOptions( kCCOptionPKCS7Padding ), _ iv: NSData? = nil ) -> ( CCCryptorStatus, NSData ) {
if iv != nil { assert( iv!.length == kCCBlockSizeBlowfish ) }

var	wLength = UInt( ( ( p.length + kCCBlockSizeBlowfish - 1 ) / kCCBlockSizeBlowfish ) * kCCBlockSizeBlowfish )
let	v = NSMutableData( length: Int( wLength ) )!
let	s: CCCryptorStatus = CCCrypt(
	operation
,	CCAlgorithm( kCCAlgorithmBlowfish )
,	options
,	key.bytes
,	UInt( key.length )
,	iv != nil ? iv!.bytes : nil
,	p.bytes
,	UInt( p.length )
,	v.mutableBytes
,	wLength
,	&wLength
)
v.length = Int( wLength )
return ( s, v )

}

func
DataEncryptedByBlowfish( p: NSData, key: NSData, _ options: CCOptions = CCOptions( kCCOptionPKCS7Padding ), _ iv: NSData? = nil ) -> ( CCCryptorStatus, NSData ) {
return DataCryptedByBlowfish( CCOperation( kCCEncrypt ), p, key, options, iv )
}

func
DataDecryptedByBlowfish( p: NSData, key: NSData, _ options: CCOptions = CCOptions( kCCOptionPKCS7Padding ), _ iv: NSData? = nil ) -> ( CCCryptorStatus, NSData ) {
return DataCryptedByBlowfish( CCOperation( kCCDecrypt ), p, key, options, iv )
}

//USAGE

func
UTF8Data( p: String ) -> NSData? {
return p.dataUsingEncoding( NSUTF8StringEncoding )
}

func
Usage() {
let wKey = UTF8Data( "teststring" )!
let wIV = UTF8Data( "12345678" )!
var ( s, data ) = DataEncryptedByBlowfish( UTF8Data( "testmessage" )!, wKey, CCOptions( kCCOptionPKCS7Padding ), wIV )
assert( Int( s ) == kCCSuccess )
( s, data ) = DataDecryptedByBlowfish( data, wKey, CCOptions( kCCOptionPKCS7Padding ), wIV )
assert( Int( s ) == kCCSuccess )
}

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