crypto: aesni - Introduce gcm_context_data
Introduce a gcm_context_data struct that will be used to pass context data between scatter/gather update calls. It is passed as the second argument (after crypto keys), other args are renumbered. Signed-off-by: Dave Watson <davejwatson@fb.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dave Watson
Herbert Xu
parent
ba45833e3e
commit
9ee4a5df22
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@ -112,6 +112,14 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff
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// (for Karatsuba purposes)
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#define VARIABLE_OFFSET 16*8
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#define AadHash 16*0
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#define AadLen 16*1
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#define InLen (16*1)+8
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#define PBlockEncKey 16*2
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#define OrigIV 16*3
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#define CurCount 16*4
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#define PBlockLen 16*5
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#define arg1 rdi
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#define arg2 rsi
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#define arg3 rdx
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@ -122,6 +130,7 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff
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#define arg8 STACK_OFFSET+16(%r14)
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#define arg9 STACK_OFFSET+24(%r14)
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#define arg10 STACK_OFFSET+32(%r14)
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#define arg11 STACK_OFFSET+40(%r14)
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#define keysize 2*15*16(%arg1)
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#endif
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@ -196,7 +205,7 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff
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# GCM_INIT initializes a gcm_context struct to prepare for encoding/decoding.
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# Clobbers rax, r10-r13 and xmm0-xmm6, %xmm13
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.macro GCM_INIT
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mov %arg6, %r12
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mov arg7, %r12
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movdqu (%r12), %xmm13
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movdqa SHUF_MASK(%rip), %xmm2
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PSHUFB_XMM %xmm2, %xmm13
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@ -218,7 +227,7 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff
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pand POLY(%rip), %xmm2
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pxor %xmm2, %xmm13
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movdqa %xmm13, HashKey(%rsp)
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mov %arg4, %r13 # %xmm13 holds HashKey<<1 (mod poly)
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mov %arg5, %r13 # %xmm13 holds HashKey<<1 (mod poly)
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and $-16, %r13
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mov %r13, %r12
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.endm
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@ -272,8 +281,8 @@ _four_cipher_left_\@:
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GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \
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%xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8
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_zero_cipher_left_\@:
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mov %arg4, %r13
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and $15, %r13 # %r13 = arg4 (mod 16)
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mov %arg5, %r13
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and $15, %r13 # %r13 = arg5 (mod 16)
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je _multiple_of_16_bytes_\@
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# Handle the last <16 Byte block separately
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@ -283,7 +292,7 @@ _zero_cipher_left_\@:
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ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn)
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lea (%arg3,%r11,1), %r10
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lea (%arg4,%r11,1), %r10
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mov %r13, %r12
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READ_PARTIAL_BLOCK %r10 %r12 %xmm2 %xmm1
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@ -321,13 +330,13 @@ _zero_cipher_left_\@:
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MOVQ_R64_XMM %xmm0, %rax
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cmp $8, %r13
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jle _less_than_8_bytes_left_\@
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mov %rax, (%arg2 , %r11, 1)
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mov %rax, (%arg3 , %r11, 1)
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add $8, %r11
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psrldq $8, %xmm0
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MOVQ_R64_XMM %xmm0, %rax
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sub $8, %r13
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_less_than_8_bytes_left_\@:
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mov %al, (%arg2, %r11, 1)
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mov %al, (%arg3, %r11, 1)
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add $1, %r11
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shr $8, %rax
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sub $1, %r13
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@ -339,11 +348,11 @@ _multiple_of_16_bytes_\@:
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# Output: Authorization Tag (AUTH_TAG)
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# Clobbers rax, r10-r12, and xmm0, xmm1, xmm5-xmm15
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.macro GCM_COMPLETE
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mov arg8, %r12 # %r13 = aadLen (number of bytes)
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mov arg9, %r12 # %r13 = aadLen (number of bytes)
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shl $3, %r12 # convert into number of bits
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movd %r12d, %xmm15 # len(A) in %xmm15
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shl $3, %arg4 # len(C) in bits (*128)
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MOVQ_R64_XMM %arg4, %xmm1
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shl $3, %arg5 # len(C) in bits (*128)
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MOVQ_R64_XMM %arg5, %xmm1
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pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000
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pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C)
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pxor %xmm15, %xmm8
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@ -352,13 +361,13 @@ _multiple_of_16_bytes_\@:
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movdqa SHUF_MASK(%rip), %xmm10
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PSHUFB_XMM %xmm10, %xmm8
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mov %arg5, %rax # %rax = *Y0
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mov %arg6, %rax # %rax = *Y0
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movdqu (%rax), %xmm0 # %xmm0 = Y0
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ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Y0)
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pxor %xmm8, %xmm0
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_return_T_\@:
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mov arg9, %r10 # %r10 = authTag
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mov arg10, %r11 # %r11 = auth_tag_len
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mov arg10, %r10 # %r10 = authTag
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mov arg11, %r11 # %r11 = auth_tag_len
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cmp $16, %r11
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je _T_16_\@
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cmp $8, %r11
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@ -496,15 +505,15 @@ _done_read_partial_block_\@:
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* the ciphertext
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* %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
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* are clobbered
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* arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified
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* arg1, %arg3, %arg4, %r14 are used as a pointer only, not modified
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*/
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.macro INITIAL_BLOCKS_ENC_DEC TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
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XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
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MOVADQ SHUF_MASK(%rip), %xmm14
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mov arg7, %r10 # %r10 = AAD
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mov arg8, %r11 # %r11 = aadLen
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mov arg8, %r10 # %r10 = AAD
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mov arg9, %r11 # %r11 = aadLen
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pxor %xmm\i, %xmm\i
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pxor \XMM2, \XMM2
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@ -536,7 +545,7 @@ _get_AAD_done\@:
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xor %r11, %r11 # initialise the data pointer offset as zero
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# start AES for num_initial_blocks blocks
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mov %arg5, %rax # %rax = *Y0
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mov %arg6, %rax # %rax = *Y0
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movdqu (%rax), \XMM0 # XMM0 = Y0
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PSHUFB_XMM %xmm14, \XMM0
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@ -573,9 +582,9 @@ aes_loop_initial_\@:
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AESENCLAST \TMP1, %xmm\index # Last Round
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.endr
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.irpc index, \i_seq
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movdqu (%arg3 , %r11, 1), \TMP1
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movdqu (%arg4 , %r11, 1), \TMP1
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pxor \TMP1, %xmm\index
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movdqu %xmm\index, (%arg2 , %r11, 1)
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movdqu %xmm\index, (%arg3 , %r11, 1)
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# write back plaintext/ciphertext for num_initial_blocks
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add $16, %r11
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@ -694,34 +703,34 @@ aes_loop_pre_done\@:
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AESENCLAST \TMP2, \XMM2
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AESENCLAST \TMP2, \XMM3
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AESENCLAST \TMP2, \XMM4
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movdqu 16*0(%arg3 , %r11 , 1), \TMP1
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movdqu 16*0(%arg4 , %r11 , 1), \TMP1
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pxor \TMP1, \XMM1
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.ifc \operation, dec
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movdqu \XMM1, 16*0(%arg2 , %r11 , 1)
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movdqu \XMM1, 16*0(%arg3 , %r11 , 1)
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movdqa \TMP1, \XMM1
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.endif
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movdqu 16*1(%arg3 , %r11 , 1), \TMP1
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movdqu 16*1(%arg4 , %r11 , 1), \TMP1
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pxor \TMP1, \XMM2
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.ifc \operation, dec
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movdqu \XMM2, 16*1(%arg2 , %r11 , 1)
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movdqu \XMM2, 16*1(%arg3 , %r11 , 1)
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movdqa \TMP1, \XMM2
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.endif
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movdqu 16*2(%arg3 , %r11 , 1), \TMP1
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movdqu 16*2(%arg4 , %r11 , 1), \TMP1
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pxor \TMP1, \XMM3
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.ifc \operation, dec
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movdqu \XMM3, 16*2(%arg2 , %r11 , 1)
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movdqu \XMM3, 16*2(%arg3 , %r11 , 1)
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movdqa \TMP1, \XMM3
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.endif
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movdqu 16*3(%arg3 , %r11 , 1), \TMP1
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movdqu 16*3(%arg4 , %r11 , 1), \TMP1
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pxor \TMP1, \XMM4
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.ifc \operation, dec
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movdqu \XMM4, 16*3(%arg2 , %r11 , 1)
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movdqu \XMM4, 16*3(%arg3 , %r11 , 1)
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movdqa \TMP1, \XMM4
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.else
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movdqu \XMM1, 16*0(%arg2 , %r11 , 1)
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movdqu \XMM2, 16*1(%arg2 , %r11 , 1)
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movdqu \XMM3, 16*2(%arg2 , %r11 , 1)
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movdqu \XMM4, 16*3(%arg2 , %r11 , 1)
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movdqu \XMM1, 16*0(%arg3 , %r11 , 1)
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movdqu \XMM2, 16*1(%arg3 , %r11 , 1)
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movdqu \XMM3, 16*2(%arg3 , %r11 , 1)
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movdqu \XMM4, 16*3(%arg3 , %r11 , 1)
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.endif
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add $64, %r11
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@ -739,7 +748,7 @@ _initial_blocks_done\@:
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/*
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* encrypt 4 blocks at a time
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* ghash the 4 previously encrypted ciphertext blocks
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* arg1, %arg2, %arg3 are used as pointers only, not modified
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* arg1, %arg3, %arg4 are used as pointers only, not modified
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* %r11 is the data offset value
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*/
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.macro GHASH_4_ENCRYPT_4_PARALLEL_ENC TMP1 TMP2 TMP3 TMP4 TMP5 \
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@ -883,18 +892,18 @@ aes_loop_par_enc_done:
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AESENCLAST \TMP3, \XMM4
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movdqa HashKey_k(%rsp), \TMP5
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PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
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movdqu (%arg3,%r11,1), \TMP3
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movdqu (%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK
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movdqu 16(%arg3,%r11,1), \TMP3
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movdqu 16(%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK
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movdqu 32(%arg3,%r11,1), \TMP3
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movdqu 32(%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK
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movdqu 48(%arg3,%r11,1), \TMP3
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movdqu 48(%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK
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movdqu \XMM1, (%arg2,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM2, 16(%arg2,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM3, 32(%arg2,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM4, 48(%arg2,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM1, (%arg3,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM2, 16(%arg3,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM3, 32(%arg3,%r11,1) # Write to the ciphertext buffer
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movdqu \XMM4, 48(%arg3,%r11,1) # Write to the ciphertext buffer
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PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap
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PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap
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PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap
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@ -947,7 +956,7 @@ aes_loop_par_enc_done:
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/*
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* decrypt 4 blocks at a time
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* ghash the 4 previously decrypted ciphertext blocks
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* arg1, %arg2, %arg3 are used as pointers only, not modified
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* arg1, %arg3, %arg4 are used as pointers only, not modified
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* %r11 is the data offset value
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*/
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.macro GHASH_4_ENCRYPT_4_PARALLEL_DEC TMP1 TMP2 TMP3 TMP4 TMP5 \
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@ -1091,21 +1100,21 @@ aes_loop_par_dec_done:
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AESENCLAST \TMP3, \XMM4
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movdqa HashKey_k(%rsp), \TMP5
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PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
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movdqu (%arg3,%r11,1), \TMP3
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movdqu (%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK
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movdqu \XMM1, (%arg2,%r11,1) # Write to plaintext buffer
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movdqu \XMM1, (%arg3,%r11,1) # Write to plaintext buffer
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movdqa \TMP3, \XMM1
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movdqu 16(%arg3,%r11,1), \TMP3
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movdqu 16(%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK
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movdqu \XMM2, 16(%arg2,%r11,1) # Write to plaintext buffer
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movdqu \XMM2, 16(%arg3,%r11,1) # Write to plaintext buffer
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movdqa \TMP3, \XMM2
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movdqu 32(%arg3,%r11,1), \TMP3
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movdqu 32(%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK
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movdqu \XMM3, 32(%arg2,%r11,1) # Write to plaintext buffer
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movdqu \XMM3, 32(%arg3,%r11,1) # Write to plaintext buffer
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movdqa \TMP3, \XMM3
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movdqu 48(%arg3,%r11,1), \TMP3
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movdqu 48(%arg4,%r11,1), \TMP3
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pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK
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movdqu \XMM4, 48(%arg2,%r11,1) # Write to plaintext buffer
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movdqu \XMM4, 48(%arg3,%r11,1) # Write to plaintext buffer
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movdqa \TMP3, \XMM4
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PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap
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PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap
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@ -1278,6 +1287,8 @@ _esb_loop_\@:
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.endm
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/*****************************************************************************
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* void aesni_gcm_dec(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
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* struct gcm_context_data *data
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* // Context data
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* u8 *out, // Plaintext output. Encrypt in-place is allowed.
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* const u8 *in, // Ciphertext input
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* u64 plaintext_len, // Length of data in bytes for decryption.
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@ -1367,6 +1378,8 @@ ENDPROC(aesni_gcm_dec)
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/*****************************************************************************
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* void aesni_gcm_enc(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
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* struct gcm_context_data *data
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* // Context data
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* u8 *out, // Ciphertext output. Encrypt in-place is allowed.
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* const u8 *in, // Plaintext input
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* u64 plaintext_len, // Length of data in bytes for encryption.
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@ -72,6 +72,21 @@ struct aesni_xts_ctx {
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u8 raw_crypt_ctx[sizeof(struct crypto_aes_ctx)] AESNI_ALIGN_ATTR;
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};
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#define GCM_BLOCK_LEN 16
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struct gcm_context_data {
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/* init, update and finalize context data */
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u8 aad_hash[GCM_BLOCK_LEN];
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u64 aad_length;
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u64 in_length;
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u8 partial_block_enc_key[GCM_BLOCK_LEN];
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u8 orig_IV[GCM_BLOCK_LEN];
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u8 current_counter[GCM_BLOCK_LEN];
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u64 partial_block_len;
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u64 unused;
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u8 hash_keys[GCM_BLOCK_LEN * 8];
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};
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asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
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unsigned int key_len);
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asmlinkage void aesni_enc(struct crypto_aes_ctx *ctx, u8 *out,
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@ -105,6 +120,7 @@ asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out,
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/* asmlinkage void aesni_gcm_enc()
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* void *ctx, AES Key schedule. Starts on a 16 byte boundary.
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* struct gcm_context_data. May be uninitialized.
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* u8 *out, Ciphertext output. Encrypt in-place is allowed.
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* const u8 *in, Plaintext input
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* unsigned long plaintext_len, Length of data in bytes for encryption.
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@ -117,13 +133,15 @@ asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out,
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* unsigned long auth_tag_len), Authenticated Tag Length in bytes.
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* Valid values are 16 (most likely), 12 or 8.
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*/
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asmlinkage void aesni_gcm_enc(void *ctx, u8 *out,
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asmlinkage void aesni_gcm_enc(void *ctx,
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struct gcm_context_data *gdata, u8 *out,
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const u8 *in, unsigned long plaintext_len, u8 *iv,
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u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
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u8 *auth_tag, unsigned long auth_tag_len);
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/* asmlinkage void aesni_gcm_dec()
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* void *ctx, AES Key schedule. Starts on a 16 byte boundary.
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* struct gcm_context_data. May be uninitialized.
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* u8 *out, Plaintext output. Decrypt in-place is allowed.
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* const u8 *in, Ciphertext input
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* unsigned long ciphertext_len, Length of data in bytes for decryption.
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@ -137,7 +155,8 @@ asmlinkage void aesni_gcm_enc(void *ctx, u8 *out,
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* unsigned long auth_tag_len) Authenticated Tag Length in bytes.
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||||
* Valid values are 16 (most likely), 12 or 8.
|
||||
*/
|
||||
asmlinkage void aesni_gcm_dec(void *ctx, u8 *out,
|
||||
asmlinkage void aesni_gcm_dec(void *ctx,
|
||||
struct gcm_context_data *gdata, u8 *out,
|
||||
const u8 *in, unsigned long ciphertext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len);
|
||||
|
|
@ -167,14 +186,16 @@ asmlinkage void aesni_gcm_dec_avx_gen2(void *ctx, u8 *out,
|
|||
const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len);
|
||||
|
||||
static void aesni_gcm_enc_avx(void *ctx, u8 *out,
|
||||
static void aesni_gcm_enc_avx(void *ctx,
|
||||
struct gcm_context_data *data, u8 *out,
|
||||
const u8 *in, unsigned long plaintext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len)
|
||||
{
|
||||
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,
|
||||
aesni_gcm_enc(ctx, data, out, in,
|
||||
plaintext_len, iv, hash_subkey, aad,
|
||||
aad_len, auth_tag, auth_tag_len);
|
||||
} else {
|
||||
aesni_gcm_precomp_avx_gen2(ctx, hash_subkey);
|
||||
|
|
@ -183,14 +204,16 @@ static void aesni_gcm_enc_avx(void *ctx, u8 *out,
|
|||
}
|
||||
}
|
||||
|
||||
static void aesni_gcm_dec_avx(void *ctx, u8 *out,
|
||||
static void aesni_gcm_dec_avx(void *ctx,
|
||||
struct gcm_context_data *data, u8 *out,
|
||||
const u8 *in, unsigned long ciphertext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len)
|
||||
{
|
||||
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,
|
||||
aesni_gcm_dec(ctx, data, out, in,
|
||||
ciphertext_len, iv, hash_subkey, aad,
|
||||
aad_len, auth_tag, auth_tag_len);
|
||||
} else {
|
||||
aesni_gcm_precomp_avx_gen2(ctx, hash_subkey);
|
||||
|
|
@ -218,14 +241,16 @@ asmlinkage void aesni_gcm_dec_avx_gen4(void *ctx, u8 *out,
|
|||
const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len);
|
||||
|
||||
static void aesni_gcm_enc_avx2(void *ctx, u8 *out,
|
||||
static void aesni_gcm_enc_avx2(void *ctx,
|
||||
struct gcm_context_data *data, u8 *out,
|
||||
const u8 *in, unsigned long plaintext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len)
|
||||
{
|
||||
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,
|
||||
aesni_gcm_enc(ctx, data, out, in,
|
||||
plaintext_len, iv, hash_subkey, aad,
|
||||
aad_len, auth_tag, auth_tag_len);
|
||||
} else if (plaintext_len < AVX_GEN4_OPTSIZE) {
|
||||
aesni_gcm_precomp_avx_gen2(ctx, hash_subkey);
|
||||
|
|
@ -238,14 +263,16 @@ static void aesni_gcm_enc_avx2(void *ctx, u8 *out,
|
|||
}
|
||||
}
|
||||
|
||||
static void aesni_gcm_dec_avx2(void *ctx, u8 *out,
|
||||
static void aesni_gcm_dec_avx2(void *ctx,
|
||||
struct gcm_context_data *data, u8 *out,
|
||||
const u8 *in, unsigned long ciphertext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len)
|
||||
{
|
||||
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,
|
||||
aesni_gcm_dec(ctx, data, out, in,
|
||||
ciphertext_len, iv, hash_subkey,
|
||||
aad, aad_len, auth_tag, auth_tag_len);
|
||||
} else if (ciphertext_len < AVX_GEN4_OPTSIZE) {
|
||||
aesni_gcm_precomp_avx_gen2(ctx, hash_subkey);
|
||||
|
|
@ -259,15 +286,19 @@ static void aesni_gcm_dec_avx2(void *ctx, u8 *out,
|
|||
}
|
||||
#endif
|
||||
|
||||
static void (*aesni_gcm_enc_tfm)(void *ctx, u8 *out,
|
||||
const u8 *in, unsigned long plaintext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len);
|
||||
static void (*aesni_gcm_enc_tfm)(void *ctx,
|
||||
struct gcm_context_data *data, u8 *out,
|
||||
const u8 *in, unsigned long plaintext_len,
|
||||
u8 *iv, u8 *hash_subkey, const u8 *aad,
|
||||
unsigned long aad_len, u8 *auth_tag,
|
||||
unsigned long auth_tag_len);
|
||||
|
||||
static void (*aesni_gcm_dec_tfm)(void *ctx, u8 *out,
|
||||
const u8 *in, unsigned long ciphertext_len, u8 *iv,
|
||||
u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
|
||||
u8 *auth_tag, unsigned long auth_tag_len);
|
||||
static void (*aesni_gcm_dec_tfm)(void *ctx,
|
||||
struct gcm_context_data *data, u8 *out,
|
||||
const u8 *in, unsigned long ciphertext_len,
|
||||
u8 *iv, u8 *hash_subkey, const u8 *aad,
|
||||
unsigned long aad_len, u8 *auth_tag,
|
||||
unsigned long auth_tag_len);
|
||||
|
||||
static inline struct
|
||||
aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm)
|
||||
|
|
@ -753,6 +784,7 @@ static int gcmaes_encrypt(struct aead_request *req, unsigned int assoclen,
|
|||
unsigned long auth_tag_len = crypto_aead_authsize(tfm);
|
||||
struct scatter_walk src_sg_walk;
|
||||
struct scatter_walk dst_sg_walk = {};
|
||||
struct gcm_context_data data AESNI_ALIGN_ATTR;
|
||||
|
||||
if (sg_is_last(req->src) &&
|
||||
(!PageHighMem(sg_page(req->src)) ||
|
||||
|
|
@ -782,7 +814,7 @@ static int gcmaes_encrypt(struct aead_request *req, unsigned int assoclen,
|
|||
}
|
||||
|
||||
kernel_fpu_begin();
|
||||
aesni_gcm_enc_tfm(aes_ctx, dst, src, req->cryptlen, iv,
|
||||
aesni_gcm_enc_tfm(aes_ctx, &data, dst, src, req->cryptlen, iv,
|
||||
hash_subkey, assoc, assoclen,
|
||||
dst + req->cryptlen, auth_tag_len);
|
||||
kernel_fpu_end();
|
||||
|
|
@ -817,6 +849,7 @@ static int gcmaes_decrypt(struct aead_request *req, unsigned int assoclen,
|
|||
u8 authTag[16];
|
||||
struct scatter_walk src_sg_walk;
|
||||
struct scatter_walk dst_sg_walk = {};
|
||||
struct gcm_context_data data AESNI_ALIGN_ATTR;
|
||||
int retval = 0;
|
||||
|
||||
tempCipherLen = (unsigned long)(req->cryptlen - auth_tag_len);
|
||||
|
|
@ -849,7 +882,7 @@ static int gcmaes_decrypt(struct aead_request *req, unsigned int assoclen,
|
|||
|
||||
|
||||
kernel_fpu_begin();
|
||||
aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv,
|
||||
aesni_gcm_dec_tfm(aes_ctx, &data, dst, src, tempCipherLen, iv,
|
||||
hash_subkey, assoc, assoclen,
|
||||
authTag, auth_tag_len);
|
||||
kernel_fpu_end();
|
||||
|
|
|
|||
Loading…
Reference in New Issue