+
+
+#ifdef WITH_LIBCRYPTO
+
+#include <openssl/sha.h>
+#define sha1_buffer SHA1
+#define sha1_init SHA1_Init
+#define sha1_update SHA1_Update
+#define sha1_final SHA1_Final
+
+#else /* WITH_LIBCRYPTO */
+
+typedef struct {
+ u32 state[5];
+ u32 count[2];
+ u8 buffer[64];
+} SHA_CTX;
+
+extern void sha1_buffer(const u8 buffer[], size_t len, u8 hash[SHA1_HASH_SIZE]);
+extern void sha1_init(SHA_CTX *ctx);
+extern void sha1_update(SHA_CTX *ctx, const u8 data[], size_t len);
+extern void sha1_final(u8 hash[SHA1_HASH_SIZE], SHA_CTX *ctx);
+
+#endif /* !WITH_LIBCRYPTO */
+
+extern int sha1sum(const char *filename, u8 hash[SHA1_HASH_SIZE]);
+
+