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#ifndef IPUTILS_MD5DIG_H
#define IPUTILS_MD5DIG_H
#if defined(USE_GCRYPT)
# include <stdlib.h>
# include <gcrypt.h>
# define IPUTILS_MD5DIG_LEN 16
#elif defined(USE_NETTLE)
# include <nettle/md5.h>
#else
# include <openssl/md5.h>
#endif
#if defined(USE_GCRYPT)
typedef struct {
gcry_md_hd_t dig;
} iputils_md5dig_ctx;
static void iputils_md5dig_init(iputils_md5dig_ctx *ctx)
{
if (gcry_md_open(&ctx->dig, GCRY_MD_MD5, 0) != GPG_ERR_NO_ERROR)
abort();
return;
}
static void iputils_md5dig_update(iputils_md5dig_ctx *ctx,
void *buf, int len)
{
gcry_md_write(ctx->dig, buf, len);
return;
}
static void iputils_md5dig_final(unsigned char *digest,
iputils_md5dig_ctx *ctx)
{
const void *p;
size_t dlen;
p = gcry_md_read(ctx->dig, GCRY_MD_MD5);
dlen = gcry_md_get_algo_dlen(GCRY_MD_MD5);
if (dlen != IPUTILS_MD5DIG_LEN)
abort();
memcpy(digest, p, dlen);
gcry_md_close(ctx->dig);
}
# define MD5_DIGEST_LENGTH IPUTILS_MD5DIG_LEN
# define MD5_CTX iputils_md5dig_ctx
# define MD5_Init iputils_md5dig_init
# define MD5_Update iputils_md5dig_update
# define MD5_Final iputils_md5dig_final
#elif defined(USE_NETTLE)
typedef struct md5_ctx iputils_md5dig_ctx;
static void iputils_md5dig_init(iputils_md5dig_ctx *ctx)
{
md5_init(ctx);
return;
}
static void iputils_md5dig_update(iputils_md5dig_ctx *ctx,
void *buf, int len)
{
md5_update(ctx, len, buf);
return;
}
static void iputils_md5dig_final(unsigned char *digest,
iputils_md5dig_ctx *ctx)
{
md5_digest(ctx, MD5_DIGEST_SIZE, digest);
}
# define MD5_DIGEST_LENGTH MD5_DIGEST_SIZE
# define MD5_CTX iputils_md5dig_ctx
# define MD5_Init iputils_md5dig_init
# define MD5_Update iputils_md5dig_update
# define MD5_Final iputils_md5dig_final
#endif
#endif
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