crypto: aesni - Add support for 192 & 256 bit keys to AESNI RFC4106

These patches fix the RFC4106 implementation in the aesni-intel
module so it supports 192 & 256 bit keys.

Since the AVX support that was added to this module also only
supports 128 bit keys, and this patch only affects the SSE
implementation, changes were also made to use the SSE version
if key sizes other than 128 are specified.

RFC4106 specifies that 192 & 256 bit keys must be supported (section
8.4).

Also, this should fix Strongswan issue 341 where the aesni module
needs to be unloaded if 256 bit keys are used:

http://wiki.strongswan.org/issues/341

This patch has been tested with Sandy Bridge and Haswell processors.
With 128 bit keys and input buffers > 512 bytes a slight performance
degradation was noticed (~1%).  For input buffers of less than 512
bytes there was no performance impact.  Compared to 128 bit keys,
256 bit key size performance is approx. .5 cycles per byte slower
on Sandy Bridge, and .37 cycles per byte slower on Haswell (vs.
SSE code).

This patch has also been tested with StrongSwan IPSec connections
where it worked correctly.

I created this diff from a git clone of crypto-2.6.git.

Any questions, please feel free to contact me.

Signed-off-by: Timothy McCaffrey <timothy.mccaffrey@unisys.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
index 477e9d75149b8c62a0c971e37108b6b03ffa7668..6bd2c6c95373f58dc8f915f5e50967105bf404d0 100644 (file)
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -32,12 +32,23 @@
 #include <linux/linkage.h>
 #include <asm/inst.h>
 
+/*
+ * The following macros are used to move an (un)aligned 16 byte value to/from
+ * an XMM register.  This can done for either FP or integer values, for FP use
+ * movaps (move aligned packed single) or integer use movdqa (move double quad
+ * aligned).  It doesn't make a performance difference which instruction is used
+ * since Nehalem (original Core i7) was released.  However, the movaps is a byte
+ * shorter, so that is the one we'll use for now. (same for unaligned).
+ */
+#define MOVADQ movaps
+#define MOVUDQ movups
+
 #ifdef __x86_64__
+
 .data
 .align 16
 .Lgf128mul_x_ble_mask:
        .octa 0x00000000000000010000000000000087
-
 POLY:   .octa 0xC2000000000000000000000000000001
 TWOONE: .octa 0x00000001000000000000000000000001
 
@@ -89,6 +100,7 @@ enc:        .octa 0x2
 #define arg8 STACK_OFFSET+16(%r14)
 #define arg9 STACK_OFFSET+24(%r14)
 #define arg10 STACK_OFFSET+32(%r14)
+#define keysize 2*15*16(%arg1)
 #endif
 
 
@@ -213,10 +225,12 @@ enc:        .octa 0x2
 
 .macro INITIAL_BLOCKS_DEC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
+        MOVADQ     SHUF_MASK(%rip), %xmm14
        mov        arg7, %r10           # %r10 = AAD
        mov        arg8, %r12           # %r12 = aadLen
        mov        %r12, %r11
        pxor       %xmm\i, %xmm\i
+
 _get_AAD_loop\num_initial_blocks\operation:
        movd       (%r10), \TMP1
        pslldq     $12, \TMP1
@@ -225,16 +239,18 @@ _get_AAD_loop\num_initial_blocks\operation:
        add        $4, %r10
        sub        $4, %r12
        jne        _get_AAD_loop\num_initial_blocks\operation
+
        cmp        $16, %r11
        je         _get_AAD_loop2_done\num_initial_blocks\operation
+
        mov        $16, %r12
 _get_AAD_loop2\num_initial_blocks\operation:
        psrldq     $4, %xmm\i
        sub        $4, %r12
        cmp        %r11, %r12
        jne        _get_AAD_loop2\num_initial_blocks\operation
+
 _get_AAD_loop2_done\num_initial_blocks\operation:
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM   %xmm14, %xmm\i # byte-reflect the AAD data
 
        xor        %r11, %r11 # initialise the data pointer offset as zero
@@ -243,59 +259,34 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
 
        mov        %arg5, %rax                      # %rax = *Y0
        movdqu     (%rax), \XMM0                    # XMM0 = Y0
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM   %xmm14, \XMM0
 
 .if (\i == 5) || (\i == 6) || (\i == 7)
+       MOVADQ          ONE(%RIP),\TMP1
+       MOVADQ          (%arg1),\TMP2
 .irpc index, \i_seq
-       paddd      ONE(%rip), \XMM0                 # INCR Y0
+       paddd      \TMP1, \XMM0                 # INCR Y0
        movdqa     \XMM0, %xmm\index
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM   %xmm14, %xmm\index      # perform a 16 byte swap
-
-.endr
-.irpc index, \i_seq
-       pxor       16*0(%arg1), %xmm\index
-.endr
-.irpc index, \i_seq
-       movaps 0x10(%rdi), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 1
-.endr
-.irpc index, \i_seq
-       movaps 0x20(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x30(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x40(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x50(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x60(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
+       pxor       \TMP2, %xmm\index
 .endr
-.irpc index, \i_seq
-       movaps 0x70(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x80(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x90(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
+       lea     0x10(%arg1),%r10
+       mov     keysize,%eax
+       shr     $2,%eax                         # 128->4, 192->6, 256->8
+       add     $5,%eax                       # 128->9, 192->11, 256->13
+
+aes_loop_initial_dec\num_initial_blocks:
+       MOVADQ  (%r10),\TMP1
+.irpc  index, \i_seq
+       AESENC  \TMP1, %xmm\index
 .endr
+       add     $16,%r10
+       sub     $1,%eax
+       jnz     aes_loop_initial_dec\num_initial_blocks
+
+       MOVADQ  (%r10), \TMP1
 .irpc index, \i_seq
-       movaps 0xa0(%arg1), \TMP1
-       AESENCLAST \TMP1, %xmm\index         # Round 10
+       AESENCLAST \TMP1, %xmm\index         # Last Round
 .endr
 .irpc index, \i_seq
        movdqu     (%arg3 , %r11, 1), \TMP1
@@ -305,10 +296,8 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
        add        $16, %r11
 
        movdqa     \TMP1, %xmm\index
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM         %xmm14, %xmm\index
-
-               # prepare plaintext/ciphertext for GHASH computation
+                # prepare plaintext/ciphertext for GHASH computation
 .endr
 .endif
        GHASH_MUL  %xmm\i, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
@@ -338,30 +327,28 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
 * Precomputations for HashKey parallel with encryption of first 4 blocks.
 * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i
 */
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM1
-        movdqa     SHUF_MASK(%rip), %xmm14
+       MOVADQ     ONE(%rip), \TMP1
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM1
        PSHUFB_XMM  %xmm14, \XMM1        # perform a 16 byte swap
 
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM2
-        movdqa     SHUF_MASK(%rip), %xmm14
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM2
        PSHUFB_XMM  %xmm14, \XMM2        # perform a 16 byte swap
 
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM3
-        movdqa     SHUF_MASK(%rip), %xmm14
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM3
        PSHUFB_XMM %xmm14, \XMM3        # perform a 16 byte swap
 
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM4
-        movdqa     SHUF_MASK(%rip), %xmm14
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM4
        PSHUFB_XMM %xmm14, \XMM4        # perform a 16 byte swap
 
-       pxor       16*0(%arg1), \XMM1
-       pxor       16*0(%arg1), \XMM2
-       pxor       16*0(%arg1), \XMM3
-       pxor       16*0(%arg1), \XMM4
+       MOVADQ     0(%arg1),\TMP1
+       pxor       \TMP1, \XMM1
+       pxor       \TMP1, \XMM2
+       pxor       \TMP1, \XMM3
+       pxor       \TMP1, \XMM4
        movdqa     \TMP3, \TMP5
        pshufd     $78, \TMP3, \TMP1
        pxor       \TMP3, \TMP1
@@ -399,7 +386,23 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
        pshufd     $78, \TMP5, \TMP1
        pxor       \TMP5, \TMP1
        movdqa     \TMP1, HashKey_4_k(%rsp)
-       movaps 0xa0(%arg1), \TMP2
+       lea        0xa0(%arg1),%r10
+       mov        keysize,%eax
+       shr        $2,%eax                      # 128->4, 192->6, 256->8
+       sub        $4,%eax                      # 128->0, 192->2, 256->4
+       jz         aes_loop_pre_dec_done\num_initial_blocks
+
+aes_loop_pre_dec\num_initial_blocks:
+       MOVADQ     (%r10),\TMP2
+.irpc  index, 1234
+       AESENC     \TMP2, %xmm\index
+.endr
+       add        $16,%r10
+       sub        $1,%eax
+       jnz        aes_loop_pre_dec\num_initial_blocks
+
+aes_loop_pre_dec_done\num_initial_blocks:
+       MOVADQ     (%r10), \TMP2
        AESENCLAST \TMP2, \XMM1
        AESENCLAST \TMP2, \XMM2
        AESENCLAST \TMP2, \XMM3
@@ -421,15 +424,11 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
        movdqu     \XMM4, 16*3(%arg2 , %r11 , 1)
        movdqa     \TMP1, \XMM4
        add        $64, %r11
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap
        pxor       \XMMDst, \XMM1
 # combine GHASHed value with the corresponding ciphertext
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap
 
 _initial_blocks_done\num_initial_blocks\operation:
@@ -451,6 +450,7 @@ _initial_blocks_done\num_initial_blocks\operation:
 
 .macro INITIAL_BLOCKS_ENC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
+        MOVADQ     SHUF_MASK(%rip), %xmm14
        mov        arg7, %r10           # %r10 = AAD
        mov        arg8, %r12           # %r12 = aadLen
        mov        %r12, %r11
@@ -472,7 +472,6 @@ _get_AAD_loop2\num_initial_blocks\operation:
        cmp        %r11, %r12
        jne        _get_AAD_loop2\num_initial_blocks\operation
 _get_AAD_loop2_done\num_initial_blocks\operation:
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM   %xmm14, %xmm\i # byte-reflect the AAD data
 
        xor        %r11, %r11 # initialise the data pointer offset as zero
@@ -481,59 +480,35 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
 
        mov        %arg5, %rax                      # %rax = *Y0
        movdqu     (%rax), \XMM0                    # XMM0 = Y0
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM   %xmm14, \XMM0
 
 .if (\i == 5) || (\i == 6) || (\i == 7)
-.irpc index, \i_seq
-       paddd      ONE(%rip), \XMM0                 # INCR Y0
-       movdqa     \XMM0, %xmm\index
-        movdqa     SHUF_MASK(%rip), %xmm14
-       PSHUFB_XMM   %xmm14, %xmm\index      # perform a 16 byte swap
 
-.endr
-.irpc index, \i_seq
-       pxor       16*0(%arg1), %xmm\index
-.endr
-.irpc index, \i_seq
-       movaps 0x10(%rdi), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 1
-.endr
-.irpc index, \i_seq
-       movaps 0x20(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
+       MOVADQ          ONE(%RIP),\TMP1
+       MOVADQ          0(%arg1),\TMP2
 .irpc index, \i_seq
-       movaps 0x30(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
+       paddd           \TMP1, \XMM0                 # INCR Y0
+       MOVADQ          \XMM0, %xmm\index
+       PSHUFB_XMM      %xmm14, %xmm\index      # perform a 16 byte swap
+       pxor            \TMP2, %xmm\index
 .endr
-.irpc index, \i_seq
-       movaps 0x40(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x50(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x60(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x70(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x80(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
-.endr
-.irpc index, \i_seq
-       movaps 0x90(%arg1), \TMP1
-       AESENC     \TMP1, %xmm\index          # Round 2
+       lea     0x10(%arg1),%r10
+       mov     keysize,%eax
+       shr     $2,%eax                         # 128->4, 192->6, 256->8
+       add     $5,%eax                       # 128->9, 192->11, 256->13
+
+aes_loop_initial_enc\num_initial_blocks:
+       MOVADQ  (%r10),\TMP1
+.irpc  index, \i_seq
+       AESENC  \TMP1, %xmm\index
 .endr
+       add     $16,%r10
+       sub     $1,%eax
+       jnz     aes_loop_initial_enc\num_initial_blocks
+
+       MOVADQ  (%r10), \TMP1
 .irpc index, \i_seq
-       movaps 0xa0(%arg1), \TMP1
-       AESENCLAST \TMP1, %xmm\index         # Round 10
+       AESENCLAST \TMP1, %xmm\index         # Last Round
 .endr
 .irpc index, \i_seq
        movdqu     (%arg3 , %r11, 1), \TMP1
@@ -541,8 +516,6 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
        movdqu     %xmm\index, (%arg2 , %r11, 1)
        # write back plaintext/ciphertext for num_initial_blocks
        add        $16, %r11
-
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM         %xmm14, %xmm\index
 
                # prepare plaintext/ciphertext for GHASH computation
@@ -575,30 +548,28 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
 * Precomputations for HashKey parallel with encryption of first 4 blocks.
 * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i
 */
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM1
-        movdqa     SHUF_MASK(%rip), %xmm14
+       MOVADQ     ONE(%RIP),\TMP1
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM1
        PSHUFB_XMM  %xmm14, \XMM1        # perform a 16 byte swap
 
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM2
-        movdqa     SHUF_MASK(%rip), %xmm14
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM2
        PSHUFB_XMM  %xmm14, \XMM2        # perform a 16 byte swap
 
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM3
-        movdqa     SHUF_MASK(%rip), %xmm14
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM3
        PSHUFB_XMM %xmm14, \XMM3        # perform a 16 byte swap
 
-       paddd      ONE(%rip), \XMM0              # INCR Y0
-       movdqa     \XMM0, \XMM4
-        movdqa     SHUF_MASK(%rip), %xmm14
+       paddd      \TMP1, \XMM0              # INCR Y0
+       MOVADQ     \XMM0, \XMM4
        PSHUFB_XMM %xmm14, \XMM4        # perform a 16 byte swap
 
-       pxor       16*0(%arg1), \XMM1
-       pxor       16*0(%arg1), \XMM2
-       pxor       16*0(%arg1), \XMM3
-       pxor       16*0(%arg1), \XMM4
+       MOVADQ     0(%arg1),\TMP1
+       pxor       \TMP1, \XMM1
+       pxor       \TMP1, \XMM2
+       pxor       \TMP1, \XMM3
+       pxor       \TMP1, \XMM4
        movdqa     \TMP3, \TMP5
        pshufd     $78, \TMP3, \TMP1
        pxor       \TMP3, \TMP1
@@ -636,7 +607,23 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
        pshufd     $78, \TMP5, \TMP1
        pxor       \TMP5, \TMP1
        movdqa     \TMP1, HashKey_4_k(%rsp)
-       movaps 0xa0(%arg1), \TMP2
+       lea        0xa0(%arg1),%r10
+       mov        keysize,%eax
+       shr        $2,%eax                      # 128->4, 192->6, 256->8
+       sub        $4,%eax                      # 128->0, 192->2, 256->4
+       jz         aes_loop_pre_enc_done\num_initial_blocks
+
+aes_loop_pre_enc\num_initial_blocks:
+       MOVADQ     (%r10),\TMP2
+.irpc  index, 1234
+       AESENC     \TMP2, %xmm\index
+.endr
+       add        $16,%r10
+       sub        $1,%eax
+       jnz        aes_loop_pre_enc\num_initial_blocks
+
+aes_loop_pre_enc_done\num_initial_blocks:
+       MOVADQ     (%r10), \TMP2
        AESENCLAST \TMP2, \XMM1
        AESENCLAST \TMP2, \XMM2
        AESENCLAST \TMP2, \XMM3
@@ -655,15 +642,11 @@ _get_AAD_loop2_done\num_initial_blocks\operation:
        movdqu     \XMM4, 16*3(%arg2 , %r11 , 1)
 
        add        $64, %r11
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap
        pxor       \XMMDst, \XMM1
 # combine GHASHed value with the corresponding ciphertext
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap
-        movdqa     SHUF_MASK(%rip), %xmm14
        PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap
 
 _initial_blocks_done\num_initial_blocks\operation:
@@ -794,7 +777,23 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
        AESENC    \TMP3, \XMM3
        AESENC    \TMP3, \XMM4
        PCLMULQDQ 0x00, \TMP5, \XMM8          # XMM8 = a0*b0
-       movaps 0xa0(%arg1), \TMP3
+       lea       0xa0(%arg1),%r10
+       mov       keysize,%eax
+       shr       $2,%eax                       # 128->4, 192->6, 256->8
+       sub       $4,%eax                       # 128->0, 192->2, 256->4
+       jz        aes_loop_par_enc_done
+
+aes_loop_par_enc:
+       MOVADQ    (%r10),\TMP3
+.irpc  index, 1234
+       AESENC    \TMP3, %xmm\index
+.endr
+       add       $16,%r10
+       sub       $1,%eax
+       jnz       aes_loop_par_enc
+
+aes_loop_par_enc_done:
+       MOVADQ    (%r10), \TMP3
        AESENCLAST \TMP3, \XMM1           # Round 10
        AESENCLAST \TMP3, \XMM2
        AESENCLAST \TMP3, \XMM3
@@ -986,8 +985,24 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
        AESENC    \TMP3, \XMM3
        AESENC    \TMP3, \XMM4
        PCLMULQDQ 0x00, \TMP5, \XMM8          # XMM8 = a0*b0
-       movaps 0xa0(%arg1), \TMP3
-       AESENCLAST \TMP3, \XMM1           # Round 10
+       lea       0xa0(%arg1),%r10
+       mov       keysize,%eax
+       shr       $2,%eax                       # 128->4, 192->6, 256->8
+       sub       $4,%eax                       # 128->0, 192->2, 256->4
+       jz        aes_loop_par_dec_done
+
+aes_loop_par_dec:
+       MOVADQ    (%r10),\TMP3
+.irpc  index, 1234
+       AESENC    \TMP3, %xmm\index
+.endr
+       add       $16,%r10
+       sub       $1,%eax
+       jnz       aes_loop_par_dec
+
+aes_loop_par_dec_done:
+       MOVADQ    (%r10), \TMP3
+       AESENCLAST \TMP3, \XMM1           # last round
        AESENCLAST \TMP3, \XMM2
        AESENCLAST \TMP3, \XMM3
        AESENCLAST \TMP3, \XMM4
@@ -1155,33 +1170,29 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
        pxor      \TMP6, \XMMDst            # reduced result is in XMMDst
 .endm
 
-/* Encryption of a single block done*/
-.macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1
 
-       pxor    (%arg1), \XMM0
-        movaps 16(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 32(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 48(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 64(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 80(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 96(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 112(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 128(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 144(%arg1), \TMP1
-       AESENC  \TMP1, \XMM0
-        movaps 160(%arg1), \TMP1
-       AESENCLAST      \TMP1, \XMM0
-.endm
+/* Encryption of a single block
+* uses eax & r10
+*/
 
+.macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1
 
+       pxor            (%arg1), \XMM0
+       mov             keysize,%eax
+       shr             $2,%eax                 # 128->4, 192->6, 256->8
+       add             $5,%eax                 # 128->9, 192->11, 256->13
+       lea             16(%arg1), %r10   # get first expanded key address
+
+_esb_loop_\@:
+       MOVADQ          (%r10),\TMP1
+       AESENC          \TMP1,\XMM0
+       add             $16,%r10
+       sub             $1,%eax
+       jnz             _esb_loop_\@
+
+       MOVADQ          (%r10),\TMP1
+       AESENCLAST      \TMP1,\XMM0
+.endm
 /*****************************************************************************
 * void aesni_gcm_dec(void *aes_ctx,    // AES Key schedule. Starts on a 16 byte boundary.
 *                   u8 *out,           // Plaintext output. Encrypt in-place is allowed.

diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index ae855f4f64b7755410701753f79608d0408880f9..947c6bf52c330452cfb7ac4a19d368f68f4e4509 100644 (file)
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -43,6 +43,7 @@
 #include <asm/crypto/glue_helper.h>
 #endif
 
+
 /* This data is stored at the end of the crypto_tfm struct.
  * It's a type of per "session" data storage location.
  * This needs to be 16 byte aligned.
@@ -182,7 +183,8 @@ static void aesni_gcm_enc_avx(void *ctx, u8 *out,
                        u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
                        u8 *auth_tag, unsigned long auth_tag_len)
 {
-       if (plaintext_len < AVX_GEN2_OPTSIZE) {
+        struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx;
+       if ((plaintext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)){
                aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad,
                                aad_len, auth_tag, auth_tag_len);
        } else {
@@ -197,7 +199,8 @@ static void aesni_gcm_dec_avx(void *ctx, u8 *out,
                        u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
                        u8 *auth_tag, unsigned long auth_tag_len)
 {
-       if (ciphertext_len < AVX_GEN2_OPTSIZE) {
+        struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx;
+       if ((ciphertext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) {
                aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, aad,
                                aad_len, auth_tag, auth_tag_len);
        } else {
@@ -231,7 +234,8 @@ static void aesni_gcm_enc_avx2(void *ctx, u8 *out,
                        u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
                        u8 *auth_tag, unsigned long auth_tag_len)
 {
-       if (plaintext_len < AVX_GEN2_OPTSIZE) {
+       struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx;
+       if ((plaintext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) {
                aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad,
                                aad_len, auth_tag, auth_tag_len);
        } else if (plaintext_len < AVX_GEN4_OPTSIZE) {
@@ -250,7 +254,8 @@ static void aesni_gcm_dec_avx2(void *ctx, u8 *out,
                        u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
                        u8 *auth_tag, unsigned long auth_tag_len)
 {
-       if (ciphertext_len < AVX_GEN2_OPTSIZE) {
+       struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx;
+       if ((ciphertext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) {
                aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey,
                                aad, aad_len, auth_tag, auth_tag_len);
        } else if (ciphertext_len < AVX_GEN4_OPTSIZE) {
@@ -511,7 +516,7 @@ static int ctr_crypt(struct blkcipher_desc *desc,
        kernel_fpu_begin();
        while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) {
                aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr,
-                                 nbytes & AES_BLOCK_MASK, walk.iv);
+                                     nbytes & AES_BLOCK_MASK, walk.iv);
                nbytes &= AES_BLOCK_SIZE - 1;
                err = blkcipher_walk_done(desc, &walk, nbytes);
        }
@@ -902,7 +907,8 @@ static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key,
        }
        /*Account for 4 byte nonce at the end.*/
        key_len -= 4;
-       if (key_len != AES_KEYSIZE_128) {
+       if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 &&
+           key_len != AES_KEYSIZE_256) {
                crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
                return -EINVAL;
        }
@@ -1013,6 +1019,7 @@ static int __driver_rfc4106_encrypt(struct aead_request *req)
        __be32 counter = cpu_to_be32(1);
        struct crypto_aead *tfm = crypto_aead_reqtfm(req);
        struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm);
+       u32 key_len = ctx->aes_key_expanded.key_length;
        void *aes_ctx = &(ctx->aes_key_expanded);
        unsigned long auth_tag_len = crypto_aead_authsize(tfm);
        u8 iv_tab[16+AESNI_ALIGN];
@@ -1027,6 +1034,13 @@ static int __driver_rfc4106_encrypt(struct aead_request *req)
        /* to 8 or 12 bytes */
        if (unlikely(req->assoclen != 8 && req->assoclen != 12))
                return -EINVAL;
+       if (unlikely(auth_tag_len != 8 && auth_tag_len != 12 && auth_tag_len != 16))
+               return -EINVAL;
+       if (unlikely(key_len != AES_KEYSIZE_128 &&
+                    key_len != AES_KEYSIZE_192 &&
+                    key_len != AES_KEYSIZE_256))
+               return -EINVAL;
+
        /* IV below built */
        for (i = 0; i < 4; i++)
                *(iv+i) = ctx->nonce[i];
@@ -1091,6 +1105,7 @@ static int __driver_rfc4106_decrypt(struct aead_request *req)
        int retval = 0;
        struct crypto_aead *tfm = crypto_aead_reqtfm(req);
        struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm);
+       u32 key_len = ctx->aes_key_expanded.key_length;
        void *aes_ctx = &(ctx->aes_key_expanded);
        unsigned long auth_tag_len = crypto_aead_authsize(tfm);
        u8 iv_and_authTag[32+AESNI_ALIGN];
@@ -1104,6 +1119,13 @@ static int __driver_rfc4106_decrypt(struct aead_request *req)
        if (unlikely((req->cryptlen < auth_tag_len) ||
                (req->assoclen != 8 && req->assoclen != 12)))
                return -EINVAL;
+       if (unlikely(auth_tag_len != 8 && auth_tag_len != 12 && auth_tag_len != 16))
+               return -EINVAL;
+       if (unlikely(key_len != AES_KEYSIZE_128 &&
+                    key_len != AES_KEYSIZE_192 &&
+                    key_len != AES_KEYSIZE_256))
+               return -EINVAL;
+
        /* Assuming we are supporting rfc4106 64-bit extended */
        /* sequence numbers We need to have the AAD length */
        /* equal to 8 or 12 bytes */