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elinks/src/util/md5.h

57 lines
1.8 KiB
C

#ifndef EL__UTIL_MD5_H
#define EL__UTIL_MD5_H
/* Optionally MD5 support can depend on external implementation when linking
* against a SSL library that supports it. */
#if defined(CONFIG_OWN_LIBC)
#define CONFIG_MD5 1
#elif defined(CONFIG_OPENSSL)
#include <openssl/md5.h>
#elif defined(CONFIG_GNUTLS_OPENSSL_COMPAT)
#include <gnutls/openssl.h>
#else
#define CONFIG_MD5 1
#endif
/* GNU TLS doesn't define this */
#ifndef MD5_DIGEST_LENGTH
#define MD5_DIGEST_LENGTH 16
#endif
#define MD5_HEX_DIGEST_LENGTH (MD5_DIGEST_LENGTH * 2)
typedef unsigned char md5_digest_bin_T[MD5_DIGEST_LENGTH];
typedef unsigned char md5_digest_hex_T[MD5_HEX_DIGEST_LENGTH];
struct md5_context {
uint32_t buf[4];
uint32_t bits[2];
unsigned char in[64];
};
/* The interface for digesting several chunks of data. To compute the message
* digest of a chunk of bytes, declare an md5_context structure, pass it to
* init_md5(), call update_md5() as needed on buffers full of bytes, and then
* call done_md5(), which will fill a supplied 16-byte array with the digest. */
void init_md5(struct md5_context *context);
void update_md5(struct md5_context *context, const unsigned char *data, unsigned long length);
void done_md5(struct md5_context *context, md5_digest_bin_T digest);
/* Digest the passed @data with the given length and stores the MD5 digest in
* the @digest parameter. */
unsigned char *
digest_md5(const unsigned char *data, unsigned long length, md5_digest_bin_T digest);
#ifdef CONFIG_MD5
/* Provide compatibility with the OpenSSL interface: */
typedef struct md5_context MD5_CTX;
#define MD5_Init(context) init_md5(context)
#define MD5_Update(context, data, len) update_md5(context, data, len)
#define MD5_Final(md5, context) done_md5(context, md5)
#define MD5(data, len, md5) digest_md5(data, len, md5)
#endif /* CONFIG_MD5 */
#endif