Zip Key

Zip Key is a program to recover passwords for ZIP archives created with WinZip, PKZip or any other ZIP-compatible software.

Features

• New Zip Key decrypts most of WinZip archives in less than an hour with our new SureZip™ Recovery  
• All versions of WinZip and PKZip are supported
• Fast password recovery engine - up to 3,500,000 passwords checked per second on an average P-II system
• Brute-Force, Xieve™, SureZip™, Known Plaintext or Dictionary attacks are used to recover the password
• Additional user dictionaries support, case changes, multiple mistypes and other modifications for each dictionary word
• Program automatically saves password search state and can resume after a stop or a crash
• Patterns can be used to minimize search time if any part of the password is known
• Non-English characters in passwords are supported
• Self-Extracting Zip Files (SFX) are supported
• Full install/uninstall support

Xieve™

• Passware developed Xieve™ optimization that boosts dramatically Brute-Force attack speed by skipping password checks of nonsense combinations of characters. With 95% recovery rate for English words password search speed is over 1,500,000,000 passwords per minute.

SureZip™ Recovery

• SureZip™ Recovery decrypts Zip archives created with WinZip version 8.0 and earlier in less than an hour regardless of password used to protect it. At least 5 encrypted files are required in order to process the archive. Archives created with WinZip are supported.

Limitations

• Zip compression software uses relatively strong encryption algorithm that makes instant password calculation (without knowing at least one file from the archive) impossible. Brute-force attack is the slowest approach and can test all the passwords of up to 8 characters. Xieve™ attack is much faster and is capable of recovering passwords of up to 10 characters. Dictionary attack is the fastest method - there's no limitation on password length. Known Plaintext attack instantly decrypts an archive if there is at least one file from the archive available unencrypted, regardless of the password length.