/* * This is the header file for the MD5 message-digest algorithm. * The algorithm is due to Ron Rivest.  This code was * written by Colin Plumb in 1993, no copyright is claimed. * This code is in the public domain; do with it what you wish. * * Equivalent code is available from RSA Data Security, Inc. * This code has been tested against that, and is equivalent, * except that you don't need to include two pages of legalese * with every copy. * * To compute the message digest of a chunk of bytes, declare an * MD5Context structure, pass it to MD5Init, call MD5Update as * needed on buffers full of bytes, and then call MD5Final, which * will fill a supplied 16-byte array with the digest. * * Changed so as no longer to depend on Colin Plumb's `usual.h' * header definitions *  - Ian Jackson <ian@chiark.greenend.org.uk>. * Still in the public domain. */ #ifndef VPX_MD5_UTILS_H_#define VPX_MD5_UTILS_H_ #ifdef __cplusplusextern "C" {#endif #define md5byte unsigned char#define UWORD32 unsigned int typedef struct MD5Context MD5Context;struct MD5Context {  UWORD32 buf[4];  UWORD32 bytes[2];  UWORD32 in[16];}; void MD5Init(struct MD5Context *context);void MD5Update(struct MD5Context *context, md5byte const *buf, unsigned len);void MD5Final(unsigned char digest[16], struct MD5Context *context);void MD5Transform(UWORD32 buf[4], UWORD32 const in[16]); #ifdef __cplusplus}  // extern "C"#endif #endif  // VPX_MD5_UTILS_H_