#ifndef WSJTX_FOXCODE_H
#define WSJTX_FOXCODE_H

/* --------------------------- sha1.h defines --------------------------- */
/* public api for steve reid's public domain SHA-1 implementation */
/* this file is in the public domain */

/** SHA-1 Context */
typedef struct {
    uint32_t state[5];
    /**< Context state */
    uint32_t count[2];
    /**< Counter       */
    uint8_t buffer[64]; /**< SHA-1 buffer  */
} SHA1_CTX;

/** SHA-1 Context (OpenSSL compat) */
typedef SHA1_CTX SHA_CTX;

/** SHA-1 Digest size in bytes */
#define SHA1_DIGEST_SIZE 20
/** SHA-1 Digest size in bytes (OpenSSL compat) */
#define SHA_DIGEST_LENGTH SHA1_DIGEST_SIZE

void SHA1_Init(SHA1_CTX *context);

void SHA1_Update(SHA1_CTX *context, const void *p, size_t len);

void SHA1_Final(uint8_t digest[SHA1_DIGEST_SIZE], SHA1_CTX *context);

/* --------------------------- sha1.h defines (end) --------------------------- */

void hmac_sha1(const uint8_t *k,   /* secret key */
               size_t lk,  /* length of the key in bytes */
               const uint8_t *d,   /* data */
               size_t ld,  /* length of data in bytes */
               uint8_t *out, /* output buffer, at least "t" bytes */
               size_t *t);

int create_totp(char *base32_seed, char *output, uint64_t clocktime, uint64_t interval_duration, uint64_t interval_offset);

#define BASE32_CHARSET "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

#endif //WSJTX_FOXCODE_H