Implement output of GF(2^n) shares.

Compiler/instructions.py

@@ -1641,6 +1641,7 @@ class print_reg_plain(base.IOInstruction):
     code = base.opcodes['PRINTREGPLAIN']
     arg_format = ['c']
 
+@base.gf2n
 class print_reg_plains(base.IOInstruction):
     """ Output secret register.
 

Compiler/library.py

@@ -3,7 +3,7 @@ This module defines functions directly available in high-level programs,
 in particularly providing flow control and output.
 """
 
-from Compiler.types import cint,sint,cfix,sfix,sfloat,MPCThread,Array,MemValue,cgf2n,sgf2n,_number,_mem,_register,regint,Matrix,_types, cfloat, _single, localint, personal, copy_doc, _vec, SubMultiArray
+from Compiler.types import cint,sint,cfix,sfix,sfloat,MPCThread,Array,MemValue,cgf2n,sgf2n,_number,_mem,_register,regint,Matrix,_types, cfloat, _single, localint, personal, copy_doc, _vec, SubMultiArray, _secret
 from Compiler.instructions import *
 from Compiler.util import tuplify,untuplify,is_zero
 from Compiler.allocator import RegintOptimizer, AllocPool
@@ -94,7 +94,7 @@ def print_str(s, *args, print_secrets=False):
             if isinstance(val, Tape.Register):
                 if val.is_clear:
                     val.print_reg_plain()
-                elif print_secrets and isinstance(val, sint):
+                elif print_secrets and isinstance(val, _secret):
                     val.output()
                 else:
                     raise CompilerError(

Compiler/types.py

@@ -2340,6 +2340,10 @@ class _secret(_arithmetic_register, _secret_structure):
     def raw_mod2m(self, m):
         return self - (self.raw_right_shift(m) << m)
 
+    @set_instruction_type
+    @vectorize
+    def output(self):
+        print_reg_plains(self)
 
 class sint(_secret, _int):
     """
@@ -3090,10 +3094,6 @@ class sint(_secret, _int):
         concats(res, *args)
         return res
 
-    @vectorize
-    def output(self):
-        print_reg_plains(self)
-
 class sintbit(sint):
     """ :py:class:`sint` holding a bit, supporting binary operations
     (``&, |, ^``). """

Processor/Instruction.h

@@ -303,6 +303,7 @@ enum
     GPRINTMEM = 0x1B0,
     GPRINTREG = 0X1B1,
     GPRINTREGPLAIN = 0x1B3,
+    GPRINTREGPLAINS = 0x1EA,
     GRAWOUTPUT = 0x1B7,
     GSTARTPRIVATEOUTPUT = 0x1B8,
     GSTOPPRIVATEOUTPUT = 0x1B9,

Processor/Instruction.hpp

@@ -146,6 +146,7 @@ void BaseInstruction::parse_operands(istream& s, int pos, int file_pos)
       case JMPI:
       case GBIT:
       case GPRINTREGPLAIN:
+      case GPRINTREGPLAINS:
       case JOIN_TAPE:
       case PUSHINT:
       case POPINT:
@@ -1181,6 +1182,9 @@ inline void Instruction::execute(Processor<sint, sgf2n>& Proc) const
       case PRINTREGPLAINS:
         Proc.out << Proc.read_Sp(r[0]);
         return;
+      case GPRINTREGPLAINS:
+        Proc.out << Proc.read_S2(r[0]);
+        return;
       case CONDPRINTPLAIN:
         if (not Proc.read_Cp(r[0]).is_zero())
           {