diff --git a/qraltcrypt.py b/qraltcrypt.py
index 30d9458..d673f09 100644
--- a/qraltcrypt.py
+++ b/qraltcrypt.py
@@ -6,6 +6,7 @@ import sys
 P=int(base64.b85decode('|NsC0|NsC0$q(A1A!x!h#KvNafZQC>DFRLiif7Dp0t>#TI}@8CQA!ATjx+?_@0A&|%{oIHFe?ge@?R7;PvJFfZBfES<b}0%VqSj6^h`qOrZ??t3;$fU^ai)>?l^1vT8W>fuAd|kd`lnZNhoGf?BrWL!T@}@p<}-VnA%7-997erX%;`I{Upy{gJoSK+@r0Q9AfiUAca!9p4BM_aF&*BXACt?O1zi^@pNnm$`~PhGLT+IE;i0P<DPdc7!HO5n<s;!><6NcwZ&cVZ%k6j-Yd)Yl~@-TIh9F#>XmBc71AacnEC|}6>^SRima+=|NsC0|NsC0').hex(),16)
 h=lambda k,m:hmac.new(k,m,'sha256').digest()
 def kg():s=secrets.randbelow((P-1)//2);return s,pow(2,s,P)
+cr=lambda k,x:bytes(a^b for a,b in zip(x,b''.join(h(h(b'e',k),n+bytes([i&255,i>>8]))for i in range((len(x)+31)//32))))
 def pe(s):print(s,file=sys.stderr);sys.exit(1)
 def us():pe('Usage: qraltcrypt.py -G|-E|-D seckeyfile/pubkey')
 a=sys.argv
@@ -17,10 +18,10 @@ if a[1]=='-G':
 elif a[1]=='-E':
 	m=sys.stdin.buffer.read()
 	if len(m)>1<<21:pe('Error: input too big')
-	e,E=kg();k=bytes.fromhex('%0512x'%pow(int(a[2],16),e,P));n=os.urandom(32);c=bytes(i^j for i,j in zip(m,b''.join(h(h(b'e',k),n+bytes([i&255,i>>8]))for i in range((len(m)+31)//32))));print('%0512x%s'%(E,(n+c+h(h(b'm',k),c)).hex()))
+	e,E=kg();k=bytes.fromhex('%0512x'%pow(int(a[2],16),e,P));n=os.urandom(32);c=cr(k,m);print('%0512x%s'%(E,(n+c+h(h(b'm',k),c)).hex()))
 elif a[1]=='-D':
 	with open(a[2],'r')as f:s=int(f.read(),16)
 	i=input();E,e=int(i[:512],16),bytes.fromhex(i[512:]);n,c,t=e[:32],e[32:-32],e[-32:];k=bytes.fromhex('%0512x'%pow(E,s,P))
 	if not secrets.compare_digest(t,h(h(b'm',k),c)):pe('Error: auth fail')
-	sys.stdout.buffer.write(bytes(i^j for i,j in zip(c,b''.join(h(h(b'e',k),n+bytes([i&255,i>>8]))for i in range((len(e)+1)//32)))))
+	sys.stdout.buffer.write(cr(k,c))
 else:us()