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Diffstat (limited to '')
-rw-r--r-- | debian/vendor-h2o/deps/picotls/deps/cifra/src/sha1.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/debian/vendor-h2o/deps/picotls/deps/cifra/src/sha1.h b/debian/vendor-h2o/deps/picotls/deps/cifra/src/sha1.h new file mode 100644 index 0000000..4ca0e91 --- /dev/null +++ b/debian/vendor-h2o/deps/picotls/deps/cifra/src/sha1.h @@ -0,0 +1,91 @@ +/* + * cifra - embedded cryptography library + * Written in 2014 by Joseph Birr-Pixton <jpixton@gmail.com> + * + * To the extent possible under law, the author(s) have dedicated all + * copyright and related and neighboring rights to this software to the + * public domain worldwide. This software is distributed without any + * warranty. + * + * You should have received a copy of the CC0 Public Domain Dedication + * along with this software. If not, see + * <http://creativecommons.org/publicdomain/zero/1.0/>. + */ + +#ifndef SHA1_H +#define SHA1_H + +#include <stddef.h> +#include <stdint.h> + +#include "chash.h" + +/** + * SHA1 + * ==== + * + * You shouldn't use this for anything new. + */ + +/* .. c:macro:: CF_SHA1_HASHSZ + * The output size of SHA1: 20 bytes. */ +#define CF_SHA1_HASHSZ 20 + +/* .. c:macro:: CF_SHA1_BLOCKSZ + * The block size of SHA1: 64 bytes. */ +#define CF_SHA1_BLOCKSZ 64 + +/* .. c:type:: cf_sha1_context + * Incremental SHA1 hashing context. + * + * .. c:member:: cf_sha1_context.H + * Intermediate values. + * + * .. c:member:: cf_sha1_context.partial + * Unprocessed input. + * + * .. c:member:: cf_sha1_context.npartial + * Number of bytes of unprocessed input. + * + * .. c:member:: cf_sha1_context.blocks + * Number of full blocks processed. + */ +typedef struct +{ + uint32_t H[5]; /* State. */ + uint8_t partial[CF_SHA1_BLOCKSZ]; /* Partial block of input. */ + uint32_t blocks; /* Number of full blocks processed into H. */ + size_t npartial; /* Number of bytes in prefix of partial. */ +} cf_sha1_context; + +/* .. c:function:: $DECL + * Sets up `ctx` ready to hash a new message. + */ +extern void cf_sha1_init(cf_sha1_context *ctx); + +/* .. c:function:: $DECL + * Hashes `nbytes` at `data`. Copies the data if there isn't enough to make + * a full block. + */ +extern void cf_sha1_update(cf_sha1_context *ctx, const void *data, size_t nbytes); + +/* .. c:function:: $DECL + * Finishes the hash operation, writing `CF_SHA1_HASHSZ` bytes to `hash`. + * + * This leaves `ctx` unchanged. + */ +extern void cf_sha1_digest(const cf_sha1_context *ctx, uint8_t hash[CF_SHA1_HASHSZ]); + +/* .. c:function:: $DECL + * Finishes the hash operation, writing `CF_SHA1_HASHSZ` bytes to `hash`. + * + * This destroys `ctx`, but uses less stack than :c:func:`cf_sha1_digest`. + */ +extern void cf_sha1_digest_final(cf_sha1_context *ctx, uint8_t hash[CF_SHA1_HASHSZ]); + +/* .. c:var:: cf_sha1 + * Abstract interface to SHA1. See :c:type:`cf_chash` for more information. + */ +extern const cf_chash cf_sha1; + +#endif |