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Diffstat (limited to 'usr/src/common/crypto/chacha/chacha.h')
| -rw-r--r-- | usr/src/common/crypto/chacha/chacha.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/usr/src/common/crypto/chacha/chacha.h b/usr/src/common/crypto/chacha/chacha.h new file mode 100644 index 0000000000..ac9993a8a4 --- /dev/null +++ b/usr/src/common/crypto/chacha/chacha.h @@ -0,0 +1,50 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright (c) 2015, Joyent, Inc. + */ + +#ifndef _CHACHA_H +#define _CHACHA_H + +/* + * ChaCha cipher implementation header + * + * Note, the chacha C files that we have, have a compile time option for + * generating a keystream only. eg. in other words -DKEYSTREAM_ONLY. If using + * chacha, for something like arc4random, where you aren't doing encryption, + * then you should pass -DKEYSTREAM_ONLY. If encryption is being done, then it + * should not be defined. The main difference is basically doing another pass + * over the data and xoring it with the generated cipher. + */ + +#include <inttypes.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct chacha_ctx { + uint32_t chacha_input[16]; +} chacha_ctx_t; + +extern void chacha_keysetup(chacha_ctx_t *, const uint8_t *, uint32_t, + uint32_t); +extern void chacha_ivsetup(chacha_ctx_t *, const uint8_t *); +extern void chacha_encrypt_bytes(chacha_ctx_t *, const uint8_t *, uint8_t *, + uint32_t); + +#ifdef __cplusplus +} +#endif + +#endif /* _CHACHA_H */ |