rem: md5_read_ctx (ctx, resbuf) const struct md5_ctx *ctx; void *resbuf;
add: md5_read_ctx (const struct md5_ctx *ctx, void *resbuf)
context: md5_read_ctx (ctx, resbuf)     const struct md5_ctx *ctx;     void *resbuf;{  ((md5_uint32 *) resbuf)[0] = SWAP (ctx->A);  ((md5_uint32 *) resbuf)[1] = SWAP (ctx->B);  ((md5_uint32 *) resbuf)[2] = SWAP (ctx->C);  ((md5_uint32 *) resbuf)[3] = SWAP (ctx->D);  return resbuf;}