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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2019-02-08 01:48:12 +0100 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2019-02-08 01:50:12 +0100 |
| commit | ba5da0946c3abaa93d1161ca512c3c326cda3736 (patch) | |
| tree | 128c238dea40ac0de0c7de8e0b02810eabc8e564 /src/Crypto/chacha256.h | |
| parent | e5b9cee8681dc45340321f759079b344a3b2676c (diff) | |
| download | VeraCrypt-ba5da0946c3abaa93d1161ca512c3c326cda3736.tar.gz VeraCrypt-ba5da0946c3abaa93d1161ca512c3c326cda3736.zip | |
Windows: Add implementation of ChaCha20 based random generator. Use it for driver need of random bytes (currently only wipe bytes but more to come later).
Diffstat (limited to 'src/Crypto/chacha256.h')
| -rw-r--r-- | src/Crypto/chacha256.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/Crypto/chacha256.h b/src/Crypto/chacha256.h new file mode 100644 index 00000000..e9533a39 --- /dev/null +++ b/src/Crypto/chacha256.h @@ -0,0 +1,31 @@ +#ifndef HEADER_Crypto_ChaCha256 +#define HEADER_Crypto_ChaCha256 + +#include "Common/Tcdefs.h" +#include "config.h" + +typedef struct +{ + CRYPTOPP_ALIGN_DATA(16) uint32 block_[16]; + CRYPTOPP_ALIGN_DATA(16) uint32 input_[16]; + size_t pos; + int internalRounds; +} ChaCha256Ctx; + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * key must be 32 bytes long and iv must be 8 bytes long + */ +void ChaCha256Init(ChaCha256Ctx* ctx, const unsigned char* key, const unsigned char* iv, int rounds); +void ChaCha256Encrypt(ChaCha256Ctx* ctx, const unsigned char* in, size_t len, unsigned char* out); +#define ChaCha256Decrypt ChaCha256Encrypt + +#ifdef __cplusplus +} +#endif + +#endif // HEADER_Crypto_ChaCha + |