What type of utility are winzip and pkzip

Care should be taken when zipping files that may contain both text and binary data. The NULL character will be allowed within the files. Each member is treated as an independent file during ZIP processing. Any record size between 1 and 80 may be put to the file with the exception of a fixed RRDS. There are only two possible resolutions to this issue:. With both resolutions, the resulting output ZIP file will not have trailing characters. We are at the mercy of other file types within the environment, where padding the last record out will always occur.

This allows the last block of the Archive to be a short block as governed by QSAM in the operating system thereby reducing wasted space. Only binary stream copies of a Key ring are supported. Example: A decryption attempt was made using only a passphrase when the file had been encrypted with both a passphrase and public-keys.

These are informational messages that you can consider as logging information. Since there is not an unresolved issue the archive opened with the password , the information may be ignored. These are vetted as they are encountered in the file stream. In this case, the ZPGPI is issued to let us know that the public-key packet could not be used in the decryption process should it be required later in the work flow.

Some processing restrictions apply based on the OpenPGP file architecture. For example:. The directory information is not independently accessible from the data portion of the OpenPGP file.

Decryption and Inflation are required to access the filename and other metadata. Inasmuch as the OpenPGP file format does not retain file data sizes compressed or uncompressed , in order for a VIEW request to report on file size information, the entire data file must be decrypted and decompressed for byte counts to be accumulated.

So, allocation amounts and DCB attributes cannot be retained for use during extraction. When creating an OpenPGP file with either Passphrase or Public-key encryption, contingency keys may be configured to be included for decipherment by a set of installation-defined keys that are supplemental to those directly requested by the user. Define a read-accessible OpenPGP Key Ring file keyring-file containing the public keys to be used as contingency keys.

A form of the setting may be chosen such that multiple, or specific keys be included from the key ring. Yes, the installation and maintenance procedures have been simplified. This list should be referenced for the specific release and maintenance level as this list may change over time. Review the residency mode attributes if bit LPA is constrained in your operating environment. Some OpenPGP keys may not have expiration dates. When the key is converted to X.

KeyMaker will default to setting an expiration date value to one year past the date the OpenPGP key was created. This may result in a converted key having an expiration date in the past. To avoid this issue, use the -expire option to KeyMaker to set an alternate expiration date when converting to X.

OpenPGP keys use a different trust model than X. To address this issue the key should be explicitly marked as trusted within RACF. When performing high volume operations such as may occur when using Field Level Encryption, you can remove some overhead that exists due to SAF calls performed for each cryptographic operation.

OpenPGP technology includes both a file format and an encryption specification. Using Smartcrypt Application Integration developers can integrate Smartcrypt encryption and compression functions into applications.

Yes, Smartcrypt supports operations on both structured often referred to as field-level encryption and unstructured files data. Additionally, for data moving between mainframe and other systems i. Our license expired, but we never received the 5-day grace period.

What do I need to do to get an Authorization Code? How long does it take to receive an Authorization Code? I forgot the password for my. What do I do? How do I activate encryption? Additional security features included are: Support for Suite B is also provided. How does recipient-based encryption differ from password? What is a Digital Certificate Store? How do I create a Local Certificate Store on the mainframe?

How do I add a digital certificate to my Local Certificate Store? When extracting an encrypted ZIP file how do I know what algorithm was used? Can both recipient-based and password encryption be used together?

How many recipients can be specified? What is Filename Encryption? Assuming the file was zipped correctly, any file with the. DOC for further information. PKZIP uses several methods of compressing data using seek out and eliminate redundant information within a file. With the redundant material removed, the file takes up less space. Normally the above statement would take 44 or more bytes of disk space because of the amount of words in the document.

But this simple line contains a surprising amount of repetition. PKZIP can handle even the largest compression tasks, with capabilities to include more than 2 billion files in a single archive and compress files over 9 exabytes in size. PKZIP is compatible with all major enterprise computing platforms and supports multiple archive formats, making it easy to exchange data across the organization efficiently and effectively. Lorem Ipsum Year after year, the amount of data being stored and exchanged around the world increases at an exponential rate.

The Gold Standard in Data Compression. Provides strong protection for sensitive data without disruptions to user workflows. Includes compression, command-line interface, and cross-platform functionality.