void MD5_Update(MD5_CTX *c, register unsigned char *data, MD5_LONG len) { register ULONG *p; int sw,sc; ULONG l; if (len == 0) return; l=(c->Nl+(len<<3))&0xffffffffL; /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to * Wei Dai <*****@*****.**> for pointing it out. */ if (l < c->Nl) /* overflow */ c->Nh++; c->Nh+=(len>>29); c->Nl=l; if (c->num != 0) { p=c->data; sw=c->num>>2; sc=c->num&0x03; if ((c->num+len) >= MD5_CBLOCK) { l= p[sw]; p_c2l(data,l,sc); p[sw++]=l; for (; sw<MD5_LBLOCK; sw++) { c2l(data,l); p[sw]=l; } len-=(MD5_CBLOCK-c->num); md5_block(c,p); c->num=0; /* drop through and do the rest */ } else { int ew,ec; c->num+=(int)len; if ((sc+len) < 4) { /* ugly, add char's to a word */ l= p[sw]; p_c2l_p(data,l,sc,len); p[sw]=l; } else { ew=(c->num>>2); ec=(c->num&0x03); l= p[sw]; p_c2l(data,l,sc); p[sw++]=l; for (; sw < ew; sw++) { c2l(data,l); p[sw]=l; } if (ec) { c2l_p(data,l,ec); p[sw]=l; } } return; } }
void MD5_Update(MD5_CTX *c, register unsigned char *data, unsigned long len) { register ULONG *p; int sw,sc; ULONG l; if (len == 0) return; l=(c->Nl+(len<<3))&0xffffffffL; if (l < c->Nl) /* overflow */ c->Nh++; c->Nh+=(len>>29); c->Nl=l; if (c->num != 0) { p=c->data; sw=c->num>>2; sc=c->num&0x03; if ((c->num+len) >= MD5_CBLOCK) { l= p[sw]; p_c2l(data,l,sc); p[sw++]=l; for (; sw<MD5_LBLOCK; sw++) { c2l(data,l); p[sw]=l; } len-=(MD5_CBLOCK-c->num); md5_block(c,p); c->num=0; /* drop through and do the rest */ } else { int ew,ec; c->num+=(int)len; if ((sc+len) < 4) /* ugly, add char's to a word */ { l= p[sw]; p_c2l_p(data,l,sc,len); p[sw]=l; } else { ew=(c->num>>2); ec=(c->num&0x03); l= p[sw]; p_c2l(data,l,sc); p[sw++]=l; for (; sw < ew; sw++) { c2l(data,l); p[sw]=l; } if (ec) { c2l_p(data,l,ec); p[sw]=l; } } return; } }