// File: /workspace/github_c_makefile_star2_O3/mjosaarinen[P]brutus/crypto_aead/aes256otrsv2/ref/OTR.c
// Function: EFunc
int EFunc(
		  const uint8 *nonce,
		  uint32 nonce_len,
		  const uint8 *plaintext,
		  uint32 pl_len,
		  uint32 t_len,
		  uint8 *ciphertext)
{
	uint32 i,j = 0;
	uint32 ell=0; //number of 2BLOCK-byte chunks, excl. last one
	uint32 last=0; //number of bytes in the last chunks

	uint8 tmp[BLOCK], LdL[BLOCK], Llast[BLOCK], Z[BLOCK];
	uint8 Sum[BLOCK]={0};

	if(pl_len != 0){
		last = pl_len % DBLOCK;
		if(last == 0) last = DBLOCK;
		ell = (pl_len-last) / DBLOCK; // plaintext length = 2BLOCK*ell + last (non-zero)
	}

	nEnc(nonce, nonce_len, t_len);

	/* 2-round Feistel for the full chunks */
	for(i = 0; i < ell; i++, j = j+DBLOCK){
		xor(L,plaintext+j,tmp);
		Encryption(KeyLen, tmp, tmp);
		xor(tmp,plaintext+(j+BLOCK),ciphertext+j);
		xor(L,delta,LdL);
		xor(LdL,ciphertext+j,tmp);
		Encryption(KeyLen, tmp, tmp);
		xor(tmp,plaintext+j,ciphertext+(j+BLOCK));
		xor(Sum,plaintext+(j+BLOCK),Sum);
		mul2(L,L); // L <- 2L
	}
	/* Last chunk */
	if(last <= BLOCK){ 	//odd block, including the case pl_len = 0 (no plaintext)
		Encryption(KeyLen, L, Z);
		xorp(last, Z,plaintext+j,ciphertext+j);
		ozp(last,plaintext+j,tmp);
		xor(tmp,Sum,Sum);
		memcpy(Llast,L,BLOCK); //Llast=L
	}
	else{//even blocks, last > BLOCK always holds. 2-round Feistel with last swap
		xor(L,plaintext+j,tmp);
		Encryption(KeyLen,tmp,Z);
		xorp(last-BLOCK,Z,plaintext+(j+BLOCK),ciphertext+(j+BLOCK));
		xor(L,delta,Llast); // Llast = L xor delta
		ozp(last-BLOCK,ciphertext+(j+BLOCK),tmp);
		xor(Sum,tmp,Sum);
		xor(Sum,Z,Sum);
		xor(Llast,tmp,tmp);
		Encryption(KeyLen,tmp,tmp);
		xor(tmp,plaintext+j,ciphertext+j);
	}
	/* TE generation */
	mul2(Llast,tmp);
	xor(Llast,tmp,Llast); //Llast = 3Llast
	xor(Sum,Llast,Sum);	//Sum = 3Llast xor Sum
	if(last == BLOCK || last == DBLOCK){//last = 16 or 32
		xor(Sum,delta,Sum);
	}
	Encryption(KeyLen,Sum,TE);
	return SUCCESS;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x78, %rsp
vpxor %xmm0, %xmm0, %xmm0
vmovdqa %xmm0, 0x20(%rsp)
testl %ecx, %ecx
je 0x1611
movq %r9, %r14
movl %ecx, %r15d
movq %rdx, %r13
movl %ecx, %ebx
andl $0x1f, %ebx
movl $0x20, %r12d
cmovnel %ebx, %r12d
subl %r12d, %r15d
movl %r8d, %edx
callq 0x10f0
xorl %ebp, %ebp
cmpl $0x20, %r15d
movq %r14, 0x40(%rsp)
jb 0x15ac
movq %rbx, 0x68(%rsp)
movl %r12d, 0x48(%rsp)
shrl $0x5, %r15d
movl %r15d, 0x4c(%rsp)
leaq 0x10(%r13), %r12
xorl %ebp, %ebp
movq 0x3b2f(%rip), %rdx      # 0x4f98
movw $0x7fff, %ax            # imm = 0x7FFF
kmovd %eax, %k1
kmovw %k1, 0x1e(%rsp)
movq %r13, %rbx
xorl %r15d, %r15d
movq %r13, 0x70(%rsp)
vmovdqu (%r13,%rbp), %xmm0
vpxor (%rdx), %xmm0, %xmm0
vmovdqa %xmm0, (%rsp)
movl $0x100, %edi            # imm = 0x100
movq %rsp, %rdx
movq %rdx, %rsi
callq 0x1100
movq %rbp, %r13
orq $0x10, %r13
xorl %eax, %eax
movb (%r12,%rax), %cl
xorb (%rsp,%rax), %cl
movb %cl, (%r14,%rax)
incq %rax
cmpq $0x10, %rax
jne 0x14ab
movq 0x3b02(%rip), %rax      # 0x4fc8
vmovdqa (%rax), %xmm0
movq 0x40(%rsp), %rax
vmovdqu (%rax,%rbp), %xmm1
movq 0x3abd(%rip), %rax      # 0x4f98
vpternlogq $0x96, (%rax), %xmm0, %xmm1
vmovdqa %xmm1, (%rsp)
movl $0x100, %edi            # imm = 0x100
movq %rsp, %rdx
movq %rdx, %rsi
callq 0x1100
xorl %eax, %eax
movb (%rbx,%rax), %cl
xorb (%rsp,%rax), %cl
movb %cl, 0x10(%r14,%rax)
incq %rax
cmpq $0x10, %rax
jne 0x14f9
movq 0x70(%rsp), %rax
vmovups (%rax,%r13), %xmm0
movq %rax, %r13
vxorps 0x20(%rsp), %xmm0, %xmm0
vmovaps %xmm0, 0x20(%rsp)
movq 0x3a6a(%rip), %rdx      # 0x4f98
movzbl (%rdx), %eax
vmovd %eax, %xmm0
vpbroadcastb %xmm0, %xmm0
kmovw 0x1e(%rsp), %k1
vmovdqu8 0x1(%rdx), %xmm1 {%k1} {z}
vpalignr $0xf, %xmm0, %xmm1, %xmm0 # xmm0 = xmm0[15],xmm1[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14]
vpsrlw $0x7, %xmm1, %xmm1
vpaddw %xmm0, %xmm0, %xmm0
vpternlogd $0xe4, 0x1a9c(%rip){1to4}, %xmm1, %xmm0 # 0x3000
vmovdqu8 %xmm0, (%rdx) {%k1}
shrl $0x7, %eax
movb 0xf(%rdx), %cl
addb %cl, %cl
leaq 0x1aa7(%rip), %rsi      # 0x3020
xorb (%rax,%rsi), %cl
movb %cl, 0xf(%rdx)
incl %r15d
addq $0x20, %rbp
addq $0x20, %r14
addq $0x20, %r12
addq $0x20, %rbx
cmpl 0x4c(%rsp), %r15d
jne 0x1482
movl 0x48(%rsp), %r12d
movq 0x40(%rsp), %r14
movq 0x68(%rsp), %rbx
cmpl $0x11, %r12d
jae 0x166c
movq 0x39db(%rip), %rsi      # 0x4f98
leaq 0x50(%rsp), %rdx
movl $0x100, %edi            # imm = 0x100
callq 0x1100
movl %ebp, %eax
addq %rax, %r13
addq %rax, %r14
movl %ebx, %r15d
xorl %eax, %eax
movb (%r13,%rax), %cl
xorb 0x50(%rsp,%rax), %cl
movb %cl, (%r14,%rax)
incq %rax
cmpq %rax, %r15
jne 0x15d9
vpxor %xmm0, %xmm0, %xmm0
movq %rsp, %rdi
vmovdqa %xmm0, (%rdi)
movq %r13, %rsi
movq %r15, %rdx
callq 0x1110
movl $0x10, %r12d
cmpl $0x10, %ebx
jne 0x163d
jmp 0x1645
movl %r8d, %edx
callq 0x10f0
movq 0x3978(%rip), %rsi      # 0x4f98
leaq 0x50(%rsp), %rdx
movl $0x100, %edi            # imm = 0x100
callq 0x1100
vpxor %xmm0, %xmm0, %xmm0
vmovdqa %xmm0, (%rsp)
xorl %ebx, %ebx
xorl %r15d, %r15d
movb $-0x80, (%rsp,%r15)
movl %ebx, %r12d
vmovaps 0x20(%rsp), %xmm0
vxorps (%rsp), %xmm0, %xmm0
vmovaps %xmm0, 0x20(%rsp)
movq 0x393b(%rip), %rax      # 0x4f98
vmovdqa (%rax), %xmm0
vmovdqa %xmm0, 0x30(%rsp)
jmp 0x1750
movl %ebp, %ebx
vmovups (%r13,%rbx), %xmm0
movq %r14, %r15
movq 0x3919(%rip), %r14      # 0x4f98
vxorps (%r14), %xmm0, %xmm0
movq %rsp, %rsi
vmovaps %xmm0, (%rsi)
leaq 0x50(%rsp), %rdx
movl $0x100, %edi            # imm = 0x100
callq 0x1100
movl %r12d, %ebp
leaq (%r15,%rbx), %rsi
addq $0x10, %rsi
addl $-0x10, %ebp
movl %ebp, %r15d
je 0x16c9
leaq (%rbx,%r13), %rax
addq $0x10, %rax
xorl %ecx, %ecx
movb (%rax,%rcx), %dl
xorb 0x50(%rsp,%rcx), %dl
movb %dl, (%rsi,%rcx)
incq %rcx
cmpq %rcx, %r15
jne 0x16b7
movq 0x38f8(%rip), %rax      # 0x4fc8
vmovaps (%rax), %xmm0
vxorps (%r14), %xmm0, %xmm0
vmovaps %xmm0, 0x30(%rsp)
vxorps %xmm0, %xmm0, %xmm0
movq %rsp, %rdi
vmovaps %xmm0, (%rdi)
movq %r15, %rdx
callq 0x1110
cmpl $0xf, %ebp
ja 0x16fc
movb $-0x80, (%rsp,%r15)
addq %rbx, %r13
movq %rsp, %rdx
vmovdqa (%rdx), %xmm0
vmovdqa 0x50(%rsp), %xmm1
vpternlogq $0x96, 0x20(%rsp), %xmm0, %xmm1
vmovdqa %xmm1, 0x20(%rsp)
vpxor 0x30(%rsp), %xmm0, %xmm0
vmovdqa %xmm0, (%rdx)
movl $0x100, %edi            # imm = 0x100
movq %rdx, %rsi
callq 0x1100
movq 0x40(%rsp), %rdx
addq %rbx, %rdx
xorl %eax, %eax
movb (%r13,%rax), %cl
xorb (%rsp,%rax), %cl
movb %cl, (%rdx,%rax)
incq %rax
cmpq $0x10, %rax
jne 0x173c
movzbl 0x30(%rsp), %eax
vmovd %eax, %xmm0
vpbroadcastb %xmm0, %xmm0
movw $0x7fff, %cx            # imm = 0x7FFF
kmovd %ecx, %k1
vmovdqu8 0x31(%rsp), %xmm1 {%k1} {z}
vpalignr $0xf, %xmm0, %xmm1, %xmm0 # xmm0 = xmm0[15],xmm1[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14]
vpsrlw $0x7, %xmm1, %xmm1
vpaddw %xmm0, %xmm0, %xmm0
vpternlogd $0xe4, 0x1875(%rip){1to4}, %xmm1, %xmm0 # 0x3000
vmovdqu8 %xmm0, (%rsp) {%k1}
shrl $0x7, %eax
movb 0x3f(%rsp), %cl
addb %cl, %cl
leaq 0x187e(%rip), %rdx      # 0x3020
xorb (%rax,%rdx), %cl
movb %cl, 0xf(%rsp)
vmovaps (%rsp), %xmm0
vxorps 0x30(%rsp), %xmm0, %xmm0
vmovaps %xmm0, 0x30(%rsp)
vxorps 0x20(%rsp), %xmm0, %xmm0
vmovaps %xmm0, 0x20(%rsp)
cmpl $0x20, %r12d
je 0x17d2
cmpl $0x10, %r12d
jne 0x17e9
movq 0x37ef(%rip), %rax      # 0x4fc8
vmovaps (%rax), %xmm0
vxorps 0x20(%rsp), %xmm0, %xmm0
vmovaps %xmm0, 0x20(%rsp)
movq 0x37f0(%rip), %rdx      # 0x4fe0
leaq 0x20(%rsp), %rsi
movl $0x100, %edi            # imm = 0x100
callq 0x1100
xorl %eax, %eax
addq $0x78, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq