sha1.h

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#ifndef LDNS_SHA1_H
#define LDNS_SHA1_H
 
#include <stdint.h>  /* uint32_t and friends */
#include <stddef.h>  /* size_t and NULL */
 
#if LDNS_BUILD_CONFIG_HAVE_INTTYPES_H
# include <inttypes.h>
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define LDNS_SHA1_BLOCK_LENGTH               64
#define LDNS_SHA1_DIGEST_LENGTH              20
 
typedef struct {
        uint32_t       state[5];
        uint64_t       count;
        unsigned char   buffer[LDNS_SHA1_BLOCK_LENGTH];
} ldns_sha1_ctx;
  
void ldns_sha1_init(ldns_sha1_ctx * context);
void ldns_sha1_transform(uint32_t state[5], const unsigned char buffer[LDNS_SHA1_BLOCK_LENGTH]);
void ldns_sha1_update(ldns_sha1_ctx *context, const unsigned char *data, unsigned int len);
void ldns_sha1_final(unsigned char digest[LDNS_SHA1_DIGEST_LENGTH], ldns_sha1_ctx *context);
 
unsigned char *ldns_sha1(const unsigned char *data, unsigned int data_len, unsigned char *digest);
 
#ifdef __cplusplus
}
#endif
 
#endif /* LDNS_SHA1_H */