41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
// Copyright 2007 Google Inc. All Rights Reserved.
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// Author: mschilder@google.com (Marius Schilder)
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#ifndef SECURITY_UTIL_LITE_HASH_INTERNAL_H__
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#define SECURITY_UTIL_LITE_HASH_INTERNAL_H__
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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struct HASH_CTX; // forward decl
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typedef struct HASH_VTAB {
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void (* const init)(struct HASH_CTX*);
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void (* const update)(struct HASH_CTX*, const void*, int);
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const uint8_t* (* const final)(struct HASH_CTX*);
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const uint8_t* (* const hash)(const void*, int, uint8_t*);
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int size;
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} HASH_VTAB;
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typedef struct HASH_CTX {
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const HASH_VTAB * f;
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uint64_t count;
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uint8_t buf[64];
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uint32_t state[8]; // upto SHA2
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} HASH_CTX;
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#define HASH_init(ctx) (ctx)->f->init(ctx)
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#define HASH_update(ctx, data, len) (ctx)->f->update(ctx, data, len)
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#define HASH_final(ctx) (ctx)->f->final(ctx)
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#define HASH_hash(data, len, digest) (ctx)->f->hash(data, len, digest)
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#define HASH_size(ctx) (ctx)->f->size
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // SECURITY_UTIL_LITE_HASH_INTERNAL_H__
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