ser1.net/dvalv

dvalv

A tool for decrypting file format version 2 Valv-encrypted files.

★ Releases ★ Changelog ★

About

dvalv takes one or more file arguments, prompts for a password, and then attempts to decrypt those files. The output file names are read from the encrypted file metadata.

dvalv EmOz8t9xAdHbMvoJdN0L26AC3VOQcFOr-i.valv

Features

• handle multiple files and directories at a time
• recursively process a directory
• process files concurrently; this can be disabled with --limit
• mirror the source directory structure
• fetch the encryption password from a secret service
• decrypt both v1 and v2 format Valv files

Performance

dvalv can decrypt ca. 5GB in ca. 3.5k files in 41s. It can encrypt ca. 4GB in ca. 1600 files in around 47s

Installing

dvalv can be installed directly with go install:

go install ser1.net/dvalv@latest

Binaries for Linux, Windows, and Darwin are provided by the CI process. See the Releases link above.

Use

Run dvalv --help for usage information, or see the man page included in the distribution archive(s).

Examples

Recursively decrypt a directory into a directory called family_photos:

dvalv --dest family_photos ~/SyncedDir/Family/

Encrypt a single file:

dvalv -e my_essay.txt

Decrypt a file, getting the password from rook:

dvalv --passcmd "rook show -np EncryptedVault" xAFwZcOPzC1S2G11unHXb7VCkcXbcZBY-x.valv

Encrypt some files and a directory into /tmp:

dvalv --dest /tmp -e one.txt two.md three.png