Twofish Control

Properties   Methods   Events   Config Settings   Errors  

Encrypt and decrypt data with Twofish, successor to the Blowfish symmetric key block cipher.

Syntax

Twofish

Remarks

The Twofish component is used to encrypt and decrypt data with Twofish, successor to the Blowfish symmetric key block cipher.

To begin simply specify the data you wish to encrypt or decrypt.

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

Before encrypting you must have a valid Key and IV. There are a few options available to you in regards to key management. The easiest option is to simply set KeyPassword. When KeyPassword is set the component will automatically create a Key and IV using the PKCS5 password digest algorithm. This means there is only one value you need to keep track of.

If you wish to have more control over the Key and IV values you may specify the properties yourself. If IV is left empty, one will be created for you when you call Encrypt or Decrypt.

A simple example: Component.InputFile = "C:\MyFile.txt"; Component.OutputFile = "C:\Encrypted.txt"; Component.KeyPassword = "password"; Component.Encrypt();

Property List

The following is the full list of the properties of the control with short descriptions. Click on the links for further details.

CipherModeThe cipher mode of operation.
InputFileThe file to process.
InputMessageThe message to process.
IVThe initialization vector (IV).
KeyThe secret key for the symmetric algorithm.
KeyPasswordA password to generate the Key and IV .
OutputFileThe output file when encrypting or decrypting.
OutputMessageThe output message after processing.
OverwriteIndicates whether or not the control should overwrite files.
PaddingModeThe padding mode.
UseHexWhether input or output is hex encoded.

Method List

The following is the full list of the methods of the control with short descriptions. Click on the links for further details.

ConfigSets or retrieves a configuration setting.
DecryptDecrypts the data.
DecryptBlockDecrypts a block and returns the decrypted data.
EncryptEncrypts the data.
EncryptBlockEncrypts data and returns the encrypted block.
ResetResets the control.

Event List

The following is the full list of the events fired by the control with short descriptions. Click on the links for further details.

ErrorFired when information is available about errors during data delivery.
ProgressFired as progress is made.

Config Settings

The following is a list of config settings for the control with short descriptions. Click on the links for further details.

BlockSizeThe block size, in bits, of the cryptographic operation.
EncryptedDataEncodingThe encoding of the encrypted input or output data.
IncludeIVWhether to prepend the IV to the output data and read the IV from the input data.
KeyPasswordAlgorithmThe hash algorithm used to derive the Key and IV from the KeyPassword property.
KeyPasswordIterationsThe number of iterations performed when using KeyPassword to derive the Key and IV.
KeyPasswordSaltThe salt value used in conjunction with the KeyPassword to derive the Key and IV.
KeySizeThe size, in bits, of secret key for the symmetric algorithm.
CodePageThe system code page used for Unicode to Multibyte translations.
MaskSensitiveDataWhether sensitive data is masked in log messages.
UseInternalSecurityAPIWhether or not to use the system security libraries or an internal implementation.

CipherMode Property (Twofish Control)

The cipher mode of operation.

Syntax

twofishcontrol.CipherMode[=integer]

Possible Values

cmCBC(0), 
cmECB(1), 
cmOFB(2), 
cmCFB(3), 
cmCTS(4), 
cm8OFB(5), 
cm8CFB(7)

Default Value

0

Remarks

The cipher mode of operation.

Possible values are:

0 (cmCBC - default) The Cipher Block Chaining (CBC) is a mode of operation for a block cipher, one in which a sequence of bits is encrypted as a single unit or block with a cipher key applied to the entire block.
1 (cmECB) The Electronic Codebook (ECB) mode encrypts each block separately. Important: It is not recommend to use this model when encrypting more than one block because it may introduce security risks.
2 (cmOFB) The Output Feedback (n-bit, NOFB) mode makes a block cipher into a synchronous stream cipher. It has some similarities to CFB mode in that it permits encryption of differing block sizes, but has the key difference that the output of the encryption block function is the feedback (instead of the ciphertext).
3 (cmCFB) The Cipher Feedback (CFB) mode processes a small amount of incremental text into ciphertext, rather than processing a whole block at one time.
4 (cmCTS) The Cipher Text Stealing (CTS) mode handles any length of plain text and produces cipher text whose length matches the plain text length. This mode behaves like the CBC mode for all but the last two blocks of the plain text.
5 (cm8OFB) 8-bit Output Feedback (OFB) cipher mode.
7 (cm8CFB) 8-bit Cipher Feedback (CFB) cipher mode.

Data Type

Integer

InputFile Property (Twofish Control)

The file to process.

Syntax

twofishcontrol.InputFile[=string]

Default Value

""

Remarks

This property specifies the file to be processed. Set this property to the full or relative path to the file which will be processed.

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

Data Type

String

InputMessage Property (Twofish Control)

The message to process.

Syntax

twofishcontrol.InputMessage[=string]

Default Value

""

Remarks

This property specifies the message to be processed.

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

To read or write binary data to the property, a Variant (Byte Array) version is provided in .InputMessageB.

Data Type

Binary String

IV Property (Twofish Control)

The initialization vector (IV).

Syntax

twofishcontrol.IV[=string]

Default Value

""

Remarks

This property specifies the initialization vector (IV). By default this property is empty and the control will automatically generate a new IV value if KeyPassword or Key is set before Encrypt or EncryptBlock is called. The size of the IV property must be equal to the BlockSize divided by 8.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .IVB.

Data Type

Binary String

Key Property (Twofish Control)

The secret key for the symmetric algorithm.

Syntax

twofishcontrol.Key[=string]

Default Value

""

Remarks

This secret key is used both for encryption and decryption. The secret key should be known only to the sender and the receiver. The legal key size varies depending on the algorithm.

If this property is left empty and KeyPassword is specified, a Key value will be generated by the control as necessary.

Legal Key and Block Sizes (in bits)

AES Rijndael CAST DES IDEA RC2 RC4 TripleDES Blowfish Twofish TEA
Minimum Key Size 128 128 112 64 128 112 112 128 112 128 128
Maximum Key Size 256 256 128 64 128 128 2048 192 448 256 128
Key Size Step 64 64 8 0 0 8 8 64 1 8 0
Block Size 128 128/192/256 64 64 64 64 N/A 64 64 128 64*

Note: When using TEA if Algorithm is set to XXTEA valid block sizes are 64 + n * 32. Where n is any positive integer.

The default KeySize is the Maximum Key Size.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .KeyB.

Data Type

Binary String

KeyPassword Property (Twofish Control)

A password to generate the Key and IV .

Syntax

twofishcontrol.KeyPassword[=string]

Default Value

""

Remarks

When this property is set the control will calculate values for Key and IV using the PKCS5 password digest algorithm. This provides a simpler alternative to creating and managing Key and IV values directly.

The size of the Key generated is dependent on the value of KeySize.

Data Type

String

OutputFile Property (Twofish Control)

The output file when encrypting or decrypting.

Syntax

twofishcontrol.OutputFile[=string]

Default Value

""

Remarks

This property specifies the file to which the output will be written when Encrypt or Decrypt is called. This may be set to an absolute or relative path.

This property is only applicable to Encrypt and Decrypt.

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

  • OutputFile
  • OutputMessage: The output data is written to this property if no other destination is specified.

Data Type

String

OutputMessage Property (Twofish Control)

The output message after processing.

Syntax

twofishcontrol.OutputMessage

Default Value

""

Remarks

This property will be populated with the output from the operation if OutputFile is not set.

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

  • OutputFile
  • OutputMessage: The output data is written to this property if no other destination is specified.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .OutputMessageB.

This property is read-only and not available at design time.

Data Type

Binary String

Overwrite Property (Twofish Control)

Indicates whether or not the control should overwrite files.

Syntax

twofishcontrol.Overwrite[=boolean]

Default Value

False

Remarks

This property indicates whether or not the control will overwrite OutputFile. If Overwrite is False, an error will be thrown whenever OutputFile exists before an operation. The default value is False.

Data Type

Boolean

PaddingMode Property (Twofish Control)

The padding mode.

Syntax

twofishcontrol.PaddingMode[=integer]

Possible Values

pmPKCS7(0), 
pmZeros(1), 
pmNone(2), 
pmANSIX923(3), 
pmISO10126(4)

Default Value

0

Remarks

PaddingMode is used to pad the final input block to guarantee that it is the correct size required for the selected CipherMode. If the input size is a multiple of the cipher's BlockSize, an extra block of padding will be appended to the input. This enables the decrypting agent to know with certainty how many bytes of padding are included. Each mode pads the data differently. Possible values are:

0 (pmPKCS7 - default) The data is padded with a series of bytes that are each equal to the number of bytes used. For instance, in the example below the data must be padded with 3 additional bytes, so each byte value will be 3.

Raw Data: AA AA AA AA AA

PKCS7 Padded Data: AA AA AA AA AA 03 03 03

1 (pmZeros) The data is padded with null bytes.
2 (pmNone) No padding will be performed.
3 (pmANSIX923) The ANSIX923 padding string consists of a sequence of bytes filled with zeros before the length. For instance, in the example below the data must be padded with 3 additional bytes, so last byte value will be 3.

Raw Data: AA AA AA AA AA

ANSIX923 padding Data: AA AA AA AA AA 00 00 03

4 (pmISO10126) The ISO10126 padding string consists of random data before the length. For instance, in the example below the data must be padded with 3 additional bytes, so last byte value will be 3.

Raw Data: AA AA AA AA AA

ISO10126 padding Data: AA AA AA AA AA F8 EF 03

When calling Decrypt the PaddingMode must match the value used when the data was encrypted.

Note: When using a value of 2 (pmNone), unless the length of input is an exact multiple of the cipher's input BlockSize, the final block of plaintext may be lost.

Data Type

Integer

UseHex Property (Twofish Control)

Whether input or output is hex encoded.

Syntax

twofishcontrol.UseHex[=boolean]

Default Value

False

Remarks

This property specifies whether the encrypted data is hex encoded.

If set to True, when Encrypt is called the control will perform the encryption as normal and then hex encode the output. OutputMessage or OutputFile will hold hex encoded data.

If set to True, when Decrypt is called the control will expect InputMessage or InputFile to hold hex encoded data. The control will then hex decode the data and perform decryption as normal.

Data Type

Boolean

Config Method (Twofish Control)

Sets or retrieves a configuration setting.

Syntax

twofishcontrol.Config ConfigurationString

Remarks

Config is a generic method available in every control. It is used to set and retrieve configuration settings for the control.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Decrypt Method (Twofish Control)

Decrypts the data.

Syntax

twofishcontrol.Decrypt

Remarks

This method will decrypt the specified data. The following properties are applicable:

Note that CipherMode must be set to the same value used during encryption or the results may be unexpected. If the CipherMode value does not match the value used during encryption the operation may succeed but the decrypted data may not be correct.

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

DecryptBlock Method (Twofish Control)

Decrypts a block and returns the decrypted data.

Syntax

twofishcontrol.DecryptBlock InputBuffer, LastBlock

Remarks

This method will decrypt the specified block and return the decrypted data.

InputBuffer specifies the encrypted block to decrypt.

LastBlock indicates whether the block is the last block.

Encrypt Method (Twofish Control)

Encrypts the data.

Syntax

twofishcontrol.Encrypt

Remarks

This method will encrypt the specified data. The following properties are applicable:

Input and Output Properties

The control will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

EncryptBlock Method (Twofish Control)

Encrypts data and returns the encrypted block.

Syntax

twofishcontrol.EncryptBlock InputBuffer, LastBlock

Remarks

This method will encrypt the input data and return the encrypted block.

InputBuffer specifies the input data to encrypt.

LastBlock specifies whether the block is the last block.

Reset Method (Twofish Control)

Resets the control.

Syntax

twofishcontrol.Reset

Remarks

When called, the control will reset all of its properties to their default values.

Error Event (Twofish Control)

Fired when information is available about errors during data delivery.

Syntax

Sub twofishcontrol_Error(ErrorCode As Integer, Description As String)

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the control fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

Progress Event (Twofish Control)

Fired as progress is made.

Syntax

Sub twofishcontrol_Progress(BytesProcessed As Long64, PercentProcessed As Integer)

Remarks

This event is fired automatically as data is processed by the control.

The PercentProcessed parameter indicates the current status of the operation.

The BytesProcessed parameter holds the total number of bytes processed so far.

Config Settings (Twofish Control)

The control accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

Twofish Config Settings

BlockSize:   The block size, in bits, of the cryptographic operation.

The block size is a basic data unit in the operation of encrypt or decrypt. Messages longer than the block size are seen as successive blocks. If the message is shorter than the block size, the message will be padded with extra bits to reach the block size according to PaddingMode. Different symmetric algorithm has different valid block sizes.

The following algorithms have a fixed block size: AES, CAST, DES, IDEA, RC2, TripleDES, Blowfish, and Twofish.

EncryptedDataEncoding:   The encoding of the encrypted input or output data.

This configuration setting specifies how the encrypted data is encoded (if at all).

When Encrypt is called the control will perform the encryption as normal and then encode the output as specified here. OutputMessage or OutputFile will hold the encoded data.

When Decrypt is called the control will expect InputMessage or InputFile to hold the encoded data as specified here. The control will then decode the data and perform decryption as normal.

Possible values are:

  • 0 (none - default)
  • 1 (Base64)
  • 2 (Hex)
  • 3 (Base64URL)

IncludeIV:   Whether to prepend the IV to the output data and read the IV from the input data.

If this config is true, the IV will be automatically prepended to the output data when calling Encrypt. When calling Decrypt and this setting is True, the IV is automatically extracted form the ciphertext. The default value is False.

KeyPasswordAlgorithm:   The hash algorithm used to derive the Key and IV from the KeyPassword property.

This configuration setting specifies which hash algorithm will be used when deriving the Key and IV from KeyPassword. The default value is "MD5". Possible values are:

  • "SHA1"
  • "MD2"
  • "MD5" (default)
  • "HMAC-SHA1"
  • "HMAC-SHA224"
  • "HMAC-SHA256"
  • "HMAC-SHA384"
  • "HMAC-SHA512"
  • "HMAC-MD5"
  • "HMAC-RIPEMD160"

When using any HMAC algorithm the PBKDF#2 method from RFC 2898 is used. Any other algorithm uses PBKDF#1 from the same RFC.

KeyPasswordIterations:   The number of iterations performed when using KeyPassword to derive the Key and IV.

This configuration setting specifies the number of iterations performed when using KeyPassword to calculate values for Key and IV. When using PBKDF#2 the default number of iterations is 10,000. When using PBKDF#1 the default number is 10.

KeyPasswordSalt:   The salt value used in conjunction with the KeyPassword to derive the Key and IV.

This configuration setting specifies the hex encoded salt value to be used along with the KeyPassword when calculating values for Key and IV.

KeySize:   The size, in bits, of secret key for the symmetric algorithm.

The legal key sizes vary depending on the algorithm. The KeySize and BlockSize configuration settings may be set to specify the key and block size (in bits).

This setting is only applicable when KeyPassword is specified.

Note that when using the EzCrypt control, KeySize should be set after setting the Algorithm property.

Base Config Settings

CodePage:   The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:

IdentifierName
037IBM EBCDIC - U.S./Canada
437OEM - United States
500IBM EBCDIC - International
708Arabic - ASMO 708
709Arabic - ASMO 449+, BCON V4
710Arabic - Transparent Arabic
720Arabic - Transparent ASMO
737OEM - Greek (formerly 437G)
775OEM - Baltic
850OEM - Multilingual Latin I
852OEM - Latin II
855OEM - Cyrillic (primarily Russian)
857OEM - Turkish
858OEM - Multilingual Latin I + Euro symbol
860OEM - Portuguese
861OEM - Icelandic
862OEM - Hebrew
863OEM - Canadian-French
864OEM - Arabic
865OEM - Nordic
866OEM - Russian
869OEM - Modern Greek
870IBM EBCDIC - Multilingual/ROECE (Latin-2)
874ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875IBM EBCDIC - Modern Greek
932ANSI/OEM - Japanese, Shift-JIS
936ANSI/OEM - Simplified Chinese (PRC, Singapore)
949ANSI/OEM - Korean (Unified Hangul Code)
950ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026IBM EBCDIC - Turkish (Latin-5)
1047IBM EBCDIC - Latin 1/Open System
1140IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141IBM EBCDIC - Germany (20273 + Euro symbol)
1142IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144IBM EBCDIC - Italy (20280 + Euro symbol)
1145IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147IBM EBCDIC - France (20297 + Euro symbol)
1148IBM EBCDIC - International (500 + Euro symbol)
1149IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201Unicode UCS-2 Big-Endian
1250ANSI - Central European
1251ANSI - Cyrillic
1252ANSI - Latin I
1253ANSI - Greek
1254ANSI - Turkish
1255ANSI - Hebrew
1256ANSI - Arabic
1257ANSI - Baltic
1258ANSI/OEM - Vietnamese
1361Korean (Johab)
10000MAC - Roman
10001MAC - Japanese
10002MAC - Traditional Chinese (Big5)
10003MAC - Korean
10004MAC - Arabic
10005MAC - Hebrew
10006MAC - Greek I
10007MAC - Cyrillic
10008MAC - Simplified Chinese (GB 2312)
10010MAC - Romania
10017MAC - Ukraine
10021MAC - Thai
10029MAC - Latin II
10079MAC - Icelandic
10081MAC - Turkish
10082MAC - Croatia
12000Unicode UCS-4 Little-Endian
12001Unicode UCS-4 Big-Endian
20000CNS - Taiwan
20001TCA - Taiwan
20002Eten - Taiwan
20003IBM5550 - Taiwan
20004TeleText - Taiwan
20005Wang - Taiwan
20105IA5 IRV International Alphabet No. 5 (7-bit)
20106IA5 German (7-bit)
20107IA5 Swedish (7-bit)
20108IA5 Norwegian (7-bit)
20127US-ASCII (7-bit)
20261T.61
20269ISO 6937 Non-Spacing Accent
20273IBM EBCDIC - Germany
20277IBM EBCDIC - Denmark/Norway
20278IBM EBCDIC - Finland/Sweden
20280IBM EBCDIC - Italy
20284IBM EBCDIC - Latin America/Spain
20285IBM EBCDIC - United Kingdom
20290IBM EBCDIC - Japanese Katakana Extended
20297IBM EBCDIC - France
20420IBM EBCDIC - Arabic
20423IBM EBCDIC - Greek
20424IBM EBCDIC - Hebrew
20833IBM EBCDIC - Korean Extended
20838IBM EBCDIC - Thai
20866Russian - KOI8-R
20871IBM EBCDIC - Icelandic
20880IBM EBCDIC - Cyrillic (Russian)
20905IBM EBCDIC - Turkish
20924IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932JIS X 0208-1990 & 0121-1990
20936Simplified Chinese (GB2312)
21025IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027Extended Alpha Lowercase
21866Ukrainian (KOI8-U)
28591ISO 8859-1 Latin I
28592ISO 8859-2 Central Europe
28593ISO 8859-3 Latin 3
28594ISO 8859-4 Baltic
28595ISO 8859-5 Cyrillic
28596ISO 8859-6 Arabic
28597ISO 8859-7 Greek
28598ISO 8859-8 Hebrew
28599ISO 8859-9 Latin 5
28605ISO 8859-15 Latin 9
29001Europa 3
38598ISO 8859-8 Hebrew
50220ISO 2022 Japanese with no halfwidth Katakana
50221ISO 2022 Japanese with halfwidth Katakana
50222ISO 2022 Japanese JIS X 0201-1989
50225ISO 2022 Korean
50227ISO 2022 Simplified Chinese
50229ISO 2022 Traditional Chinese
50930Japanese (Katakana) Extended
50931US/Canada and Japanese
50933Korean Extended and Korean
50935Simplified Chinese Extended and Simplified Chinese
50936Simplified Chinese
50937US/Canada and Traditional Chinese
50939Japanese (Latin) Extended and Japanese
51932EUC - Japanese
51936EUC - Simplified Chinese
51949EUC - Korean
51950EUC - Traditional Chinese
52936HZ-GB2312 Simplified Chinese
54936Windows XP: GB18030 Simplified Chinese (4 Byte)
57002ISCII Devanagari
57003ISCII Bengali
57004ISCII Tamil
57005ISCII Telugu
57006ISCII Assamese
57007ISCII Oriya
57008ISCII Kannada
57009ISCII Malayalam
57010ISCII Gujarati
57011ISCII Punjabi
65000Unicode UTF-7
65001Unicode UTF-8
The following is a list of valid code page identifiers for Mac OS only:
IdentifierName
1ASCII
2NEXTSTEP
3JapaneseEUC
4UTF8
5ISOLatin1
6Symbol
7NonLossyASCII
8ShiftJIS
9ISOLatin2
10Unicode
11WindowsCP1251
12WindowsCP1252
13WindowsCP1253
14WindowsCP1254
15WindowsCP1250
21ISO2022JP
30MacOSRoman
10UTF16String
0x90000100UTF16BigEndian
0x94000100UTF16LittleEndian
0x8c000100UTF32String
0x98000100UTF32BigEndian
0x9c000100UTF32LittleEndian
65536Proprietary

MaskSensitiveData:   Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to to mask sensitive data. The default is .

This setting only works on these controls: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

UseInternalSecurityAPI:   Whether or not to use the system security libraries or an internal implementation.

When set to , the control will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to tells the control to use the internal implementation instead of using the system security libraries.

This setting is set to by default on all platforms.

Trappable Errors (Twofish Control)

Twofish Errors

20102    Unsupported algorithm.
20103    No Key specified.
20104    No IV specified.
20105    Cannot read or write file.
20108    Block size is not valid for this algorithm.
20109    Key size is not valid for this algorithm.
20112    OutputFile already exists and Overwrite is False.
20122    The specified key is invalid.
20124    IV size is not valid for this algorithm.
20305    Cannot write file.
20306    Cannot read file.
20307    Cannot create file.
22005    Invalid padding. This may be an indication that the key is incorrect.