HiveV5_file_decryptor

HiveV5 file decryptor PoC Introduction The work done in the last few months has been necessary to reveal the malicious file encryption mechanism of Hive v5-5.2. The work was divided into two parts 1. Keystream decryption 2. File decryption using the decrypted keystream I would like to thank the...

8cryptdo

8CryptDo Reverse-engineered documentation and tooling for the firmware encryption methods used by 8BitDo for several products. See cryptdo8.py for a decryption and re-encryption tool applying the algorithms described in this document. The tool potentially enables creating customized firmware...

Fragnesia-go

fragnesia-go One SA. One byte at a time. No race. Go port of fragnesia CVE-2026-46300. Member of the Dirty Frag vulnerability class - separate bug, same surface, own patch. How it works tl;dr The bug is in the Linux XFRM ESP-in-TCP subsystem. When TCPULP espintcp is installed on a socket after da...

HiveV5_keystream_decryptor

HiveV5 keystream decryptor PoC Introduction The Hive sample analyzed and referred to in this document was randomly chosen from this list created by @rivitna to which my warmest thanks go. Artifacts are available on the VirusTotal platform. In this document, file a0h2uih3d2.exe has been taken as a...

CVE-2026-71884

A flaw was found in Bouncy Castle. The native one-shot Counter CTR mode cipher fails to verify that the input data length fits within the counter space defined by the initialization vector. When processing overly long inputs, the counter wraps around and causes the keystream to repeat. This flaw...

bkcrack

bkcrack Descifra el cifrado legacy de ZIP con el ataque de texto plano conocido de Biham y Kocher. Descripción general Un archivo ZIP puede contener muchas entradas cuyo contenido puede estar comprimido y/o cifrado. En particular, las entradas pueden cifrarse con un algoritmo de cifrado simétrico...

CVE-2026-71884

In Bouncy Castle for Java LTS before 2.73.13, the native one-shot CTR packet cipher did not check that the requested input length fitted the counter space the IV left. In CTR mode the IV and the block counter share one 16-byte block, so an IV of 13 to 15 bytes leaves a counter of only 1 to 3 byte...

CVE-2026-71884 Packet CTR reports a full success length after the counter is exhausted

In Bouncy Castle for Java LTS before 2.73.13, the native one-shot CTR packet cipher did not check that the requested input length fitted the counter space the IV left. In CTR mode the IV and the block counter share one 16-byte block, so an IV of 13 to 15 bytes leaves a counter of only 1 to 3 byte...

CVE-2026-71884

In Bouncy Castle for Java LTS before 2.73.13, the native one-shot CTR packet cipher did not check that the requested input length fitted the counter space the IV left. In CTR mode the IV and the block counter share one 16-byte block, so an IV of 13 to 15 bytes leaves a counter of only 1 to 3 byte...

CVE-2026-71884 Packet CTR reports a full success length after the counter is exhausted

In Bouncy Castle for Java LTS before 2.73.13, the native one-shot CTR packet cipher did not check that the requested input length fitted the counter space the IV left. In CTR mode the IV and the block counter share one 16-byte block, so an IV of 13 to 15 bytes leaves a counter of only 1 to 3 byte...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

CVE-2026-16001

The Bouncy Castle Inc. bc-csharp library (versions before 2.7.0 ) is vulnerable to a message authentication key exposure in the IesEngine stream mode. Specifically, when an IesEngine is constructed without a block cipher, the MAC key is taken from the key derivation output immediately following a...

PT-2026-104102

Exposure of the message authentication key through the encryption keystream in the stream mode of IesEngine an IesEngine constructed without a block cipher in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has observed one encrypted message with known plainte...

CVE-2026-16001: Improper Validation of Integrity Check Value

Exposure of the message authentication key through the encryption keystream in the stream mode of IesEngine an IesEngine constructed without a block cipher in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has observed one encrypted message with known plainte...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

CVE-2026-81019

wolfProvider before 1.2.2 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81020

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...