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Security - Strong Encryption Algorithms

PentaWare products support 7 different strong encryption algorithms and offer 2 different encryption methods.

  1. Method 1 is based on encrypting entire files using one of the Supported Encryption Algorithms listed in the table below.
  2. Method 2 offers WinZip Version 9 compatible encryption and PKZip Version 8.0 compatible encryption.

The default is No encryption

If Encryption is selected Password encryption will be the initial Default. You will have to select Strong Encryption from the options offered if you want an archive to be protected using one of the supported strong encryption methods.

Method 1 Encryption Method Algorithms (identified based on file extension: a PGP encrypted file will have a .ZIP.PGP extension)


Encryption Algorithm Supported

Method 2 Encryption Method Algorithms - WinZip and PKZip Encryption


Encryption Algorithm Supported

PentaZip and PentaSuite

WinZip Compatible Encryption Methods Supported

  • WinZip AES_1 128 bit
  • WinZip AES_1 192 bit
  • WinZip AES_1 256 bit
  • WinZip AES_2 128 bit
  • WinZip AES_2 192 bit
  • WinZip AES_2 256 bit
  • WZ_AES_1 [128]
  • WZ_AES_1 [192]
  • WZ_AES_1 [256]
  • WZ_AES_2 [128]
  • WZ_AES_2 [192]
  • WZ_AES_2 [256]

PKZip Compatible Encryption Methods Supported

  • PKZip DES
  • PKZip 3DES 112 bit
  • PKZip 3DES 168 bit
  • PKZip AES 128 bit
  • PKZip AES 192 bit
  • PKZip AES 256 bit
  • PKZip RC2 Version prior to 5.2
  • PKZip RC2 Version after 5.2
  • PKZip RC4
  • PK_DES
  • PK_3DES [112]
  • PK_3DES [168]
  • PK_AES [128]
  • PK_AES [192]
  • PK_AES [256]
  • PK_RC2_LT52
  • PK_RC2_GTE52
  • PK_RC4
PGP PGP (also called "Pretty Good Privacy") is an encryption method that scrambles and unscrambles data. It was developed originally by Phil Zimmermann who is now President of the recently created corporation PGP, Inc. Phil Zimmermann and other programmers around the globe have subsequently revised and improved PGP through numerous versions.

PGP is an Asymmetric cryptosystems (public key cryptosystems) because it uses one key (the public key) to encrypt a file (or message or text) and a different key (the private key) to decrypt it.

PGP uses the RSA public-key encryption system. RSA was announced in 1977 by its inventors: Ronald Rivest of MIT, Adi Shamir of the Weizmann Institute in Israel, and Leonard Adelman of USC. It is called "RSA" after the initials of these gentlemen. PGP also employs an encryption system called IDEA.

AES The current Advanced Encryption Standard (AES) is also called Rijndael (pronounced "Rain Doll").

AES is a block cipher designed by Joan Daemen and Vincent Rijmen. The name Rijndael is composed of two portions of the last names of the authors (RIJ plus DAE). The design of Rijndael was strongly influenced by the design of the block cipher Square. Rijndael is highly secure and has undergone extensive cryptanalysis. No weaknesses have been found as of November 2002.

DES The Data Encryption Standard (DES) was developed by an IBM team of engineers in 1973-74 and was adopted as a national encryption standard in 1977. It has since been superceded by AES.
Triple DES Triple DES is a minor variation of the DES standard. It takes a 192 bit key (24 characters) as input and breaks it into three keys. First, DES is used to encrypt a file using the first key. Then the file is decrypted using the second key. The final step is to encrypt the file again using the third key. Note that if all three 64 bit keys are the same, Triple DES is identical to regular DES. However, if used correctly, this method of encryption is much more secure than regular DES.
Blowfish Blowfish is a symmetric block cipher that can be used as a drop-in replacement for DES or IDEA. Blowfish was designed in 1993 by Bruce Schneier. Since then it has been used considerably and is accepted as a strong encryption algorithm.
Serpent Serpent was designed by Ross Anderson, Eli Biham and Lars Knudsen as a candidate for the Advanced Encryption Standard.

Serpent was selected as one of the five finalists in the AES competition that selected Rijndael as the AES standard. Serpent is faster than DES and uses a simpler, more secure algorithm.

There are no known attacks that have been successful in breaking this algorithm.

MARS MARS is a shared-key (symmetric) block cipher designed by IBM as a candidate algorithm for the Advanced Encryption Standard (AES). MARS supports 128-bit blocks and variable key size.

It was selected as one of the five finalists in the AES competition. MARS is unique in that it combines virtually every design technique known to cryptographers in one package. It uses two entirely separate algorithms, so that even if one portion of MARS is broken the rest of the cipher will remain secure and data will still be safe.

Due to its design, MARS offers better security than triple DES while running significantly faster than single DES.

Twofish The Twofish block cipher is Counterpane Labs' candidate for the new Advanced Encryption Standard. It is one of the five finalists chosen by NIST from a field of 15 candidates as explained above. Twofish is designed to be highly secure and highly flexible. It is well suited for large microprocessors, 8-bit smart card microprocessors, and dedicated hardware. Counterpane Labs has spent over one thousand hours cryptanalyzing Twofish, and has found no attacks that can break the full 16 round version of the algorithm.

Additional Information

Demos_Animated.GIF (2245 bytes) Check out the Animated Tutorial for PentaPGP
Server_Version_Available.GIF (2237 bytes) This feature can be found in our Server Editions - click here to check it out
Command_LIne_Available_Button.GIF (2233 bytes) You can now access this feature using our Command Line program - click here to check it out

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PentaSuite®, PentaZip®, It’s MORE Than Just A ZIP Program® are registered trademarks of PentaWare, Inc.
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