+/*
+ * sha1.h
+ *
+ * The author dedicates this file to the public domain.
+ * You can do whatever you want with this file.
+ */
+
#ifndef _WIMLIB_SHA1_H
#define _WIMLIB_SHA1_H
+#include <string.h>
+
#include "wimlib/types.h"
#include "wimlib/util.h"
-#include <string.h>
-
#define SHA1_HASH_SIZE 20
extern const u8 zero_hash[SHA1_HASH_SIZE];
+extern void
+sprint_hash(const u8 hash[SHA1_HASH_SIZE], tchar strbuf[SHA1_HASH_SIZE * 2 + 1]);
+
static inline void
copy_hash(u8 dest[SHA1_HASH_SIZE], const u8 src[SHA1_HASH_SIZE])
{
randomize_byte_array(hash, SHA1_HASH_SIZE);
}
-static inline bool
-hashes_equal(const u8 h1[SHA1_HASH_SIZE], const u8 h2[SHA1_HASH_SIZE])
-{
- return memcmp(h1, h2, SHA1_HASH_SIZE) == 0;
-}
-
static inline int
-hashes_cmp(const u8 h1[SHA1_HASH_SIZE],
- const u8 h2[SHA1_HASH_SIZE])
+hashes_cmp(const u8 h1[SHA1_HASH_SIZE], const u8 h2[SHA1_HASH_SIZE])
{
return memcmp(h1, h2, SHA1_HASH_SIZE);
}
-static inline void
-print_hash(const u8 hash[SHA1_HASH_SIZE], FILE *out)
+static inline bool
+hashes_equal(const u8 h1[SHA1_HASH_SIZE], const u8 h2[SHA1_HASH_SIZE])
{
- print_byte_field(hash, SHA1_HASH_SIZE, out);
+ return !hashes_cmp(h1, h2);
}
static inline bool
-is_zero_hash(const u8 hash[SHA1_HASH_SIZE])
+is_zero_hash(const u8 *hash)
{
- if (hash)
- for (u8 i = 0; i < SHA1_HASH_SIZE / 4; i++)
- if (((const u32*)hash)[i])
- return false;
- return true;
+ return (hash == zero_hash || hashes_equal(hash, zero_hash));
}
static inline void
zero_out_hash(u8 hash[SHA1_HASH_SIZE])
{
- memset(hash, 0, SHA1_HASH_SIZE);
+ copy_hash(hash, zero_hash);
}
-
#ifdef WITH_LIBCRYPTO
#include <openssl/sha.h>
+
+#define sha1_init SHA1_Init
+#define sha1_update SHA1_Update
+#define sha1_final SHA1_Final
+
static inline void
sha1_buffer(const void *buffer, size_t len, u8 hash[SHA1_HASH_SIZE])
{
SHA1(buffer, len, hash);
}
-#define sha1_init SHA1_Init
-#define sha1_update SHA1_Update
-#define sha1_final SHA1_Final
#else /* WITH_LIBCRYPTO */
typedef struct {
+ u64 bytecount;
u32 state[5];
- u32 count[2];
u8 buffer[64];
} SHA_CTX;
-extern void
-sha1_buffer(const void *buffer, size_t len, u8 hash[SHA1_HASH_SIZE]);
-
extern void
sha1_init(SHA_CTX *ctx);
extern void
sha1_final(u8 hash[SHA1_HASH_SIZE], SHA_CTX *ctx);
+extern void
+sha1_buffer(const void *buffer, size_t len, u8 hash[SHA1_HASH_SIZE]);
+
#endif /* !WITH_LIBCRYPTO */
#endif /* _WIMLIB_SHA1_H */