/usr/include/ldns/sha1.h is in libldns-dev 1.6.11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | #ifndef LDNS_SHA1_H
#define LDNS_SHA1_H
#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);
/**
* Convenience function to digest a fixed block of data at once.
*
* \param[in] data the data to digest
* \param[in] data_len the length of data in bytes
* \param[out] digest the length of data in bytes
* This pointer MUST have LDNS_SHA1_DIGEST_LENGTH bytes
* available
* \return the SHA1 digest of the given data
*/
unsigned char *ldns_sha1(unsigned char *data, unsigned int data_len, unsigned char *digest);
#ifdef __cplusplus
}
#endif
#endif /* LDNS_SHA1_H */
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