About GOST Key Unwrap
A decryptor for keys wrapped using one of the GOST block ciphers.
Input: text. Output: text.
Format reference: GOST Key Unwrap background and specification
Example
Use “Try example” to load this public sample and its settings, then run it.
Settings used in this example
| Parameter | Example value | Input and choices |
|---|---|---|
| Key | {"option":"Hex","string":""} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| User Key Material | {"option":"Latin1","string":"00112233"} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| Input type | Hex | Hex, Raw |
| Output type | Raw | Raw, Hex |
| Algorithm | "GOST 28147 (1989)" | GOST 28147 (1989), GOST R 34.12 (Magma, 2015), GOST R 34.12 (Kuznyechik, 2015) |
| sBox | E-Z | E-TEST, E-A, E-B, E-C, E-D, E-SC, E-Z, D-TEST, D-A, D-SC |
| Key wrapping | CP | NO, CP, SC |
Sample keys and passwords are public. Never use them to protect real data.
Input
c8e58458a42d21974d50103d59b469f2c8e58458a42d21974d50103d59b469f2 a32a1575
Result
0123456789abcdef0123456789abcdef
Parameters
| Parameter | Default value | Input and choices |
|---|---|---|
| Key | {"option":"Hex","string":""} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| User Key Material | {"option":"Hex","string":""} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| Input type | Hex | Hex, Raw |
| Output type | Raw | Raw, Hex |
| Algorithm | "GOST 28147 (1989)" | GOST 28147 (1989), GOST R 34.12 (Magma, 2015), GOST R 34.12 (Kuznyechik, 2015) |
| sBox | E-TEST | E-TEST, E-A, E-B, E-C, E-D, E-SC, E-Z, D-TEST, D-A, D-SC |
| Key wrapping | NO | NO, CP, SC |
Before interpreting the result
Use the exact key encoding, mode, padding and IV expected by the source system. Historical ciphers are useful for learning and analysis. Encoding alone provides no confidentiality.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.