Key Locker (KL) is Intel's new security feature that protects the AES key
at the time of data transformation. New AES SIMD instructions -- as a
successor of Intel's AES-NI -- are provided to encode an AES key and
reference it for the AES algorithm.
New instructions support 128/256-bit keys. While it is not desirable to
receive any 192-bit key, AES-NI instructions are taken to serve this size.
New instructions are operational in both 32-/64-bit modes.
Included are methods for ECB, CBC, CTR, and XTS modes. They are not
compatible with other implementations as referencing an encrypted form
only.
XTS needs a separate 32-bit assembly code as the 64-bit version clobbers
more than eight 128-bit registers. Support 64-bit mode only.
setkey() encodes an AES key. Users may displace the AES key right after
this as encrypt()/decrypt() methods do not need the key.
Most glue code reuses the refactored functions from the AES-NI part. When
enabled, it will have a bit higher priority than the AES-NI as providing
key protection.
Signed-off-by: Chang S. Bae <chang.seok.bae@xxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: x86@xxxxxxxxxx
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
Changes from RFC v1:
* Rebased on the refactored code. (Ard Biesheuvel)
* Dropped exporting the single block interface. (Ard Biesheuvel)
* Fixed the fallback and error handling paths. (Ard Biesheuvel)
* Revised the module description. (Dave Hansen and Peter Zijlsta)
* Made the build depend on the binutils version to support new instructions.
(Borislav Petkov and Peter Zijlstra)
* Updated the changelog accordingly.
---
arch/x86/crypto/Makefile | 3 +
arch/x86/crypto/aeskl-intel_asm.S | 1181 ++++++++++++++++++++++++++++
arch/x86/crypto/aeskl-intel_glue.c | 390 +++++++++
crypto/Kconfig | 23 +
4 files changed, 1597 insertions(+)
create mode 100644 arch/x86/crypto/aeskl-intel_asm.S
create mode 100644 arch/x86/crypto/aeskl-intel_glue.c
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 30d558df67cd..6bb4e2fb2b47 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -50,6 +50,9 @@ obj-$(CONFIG_CRYPTO_AES_NI_INTEL) += aesni-intel.o
aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o aes-intel_glue.o
aesni-intel-$(CONFIG_64BIT) += aesni-intel_avx-x86_64.o aes_ctrby8_avx-x86_64.o
+obj-$(CONFIG_CRYPTO_AES_KL) += aeskl-intel.o
+aeskl-intel-y := aeskl-intel_asm.o aesni-intel_asm.o aeskl-intel_glue.o aes-intel_glue.o
+
obj-$(CONFIG_CRYPTO_SHA1_SSSE3) += sha1-ssse3.o
sha1-ssse3-y := sha1_avx2_x86_64_asm.o sha1_ssse3_asm.o sha1_ssse3_glue.o
sha1-ssse3-$(CONFIG_AS_SHA1_NI) += sha1_ni_asm.o
diff --git a/arch/x86/crypto/aeskl-intel_asm.S b/arch/x86/crypto/aeskl-intel_asm.S
new file mode 100644
index 000000000000..34426f11219d
--- /dev/null
+++ b/arch/x86/crypto/aeskl-intel_asm.S
@@ -0,0 +1,1181 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Implement AES algorithm using Intel AES Key Locker instructions.
+ *
+ * Most code is based from the AES-NI implementation, aesni-intel_asm.S
+ *
+ */
+
+#include <linux/linkage.h>
+#include <asm/inst.h>
+#include <asm/frame.h>
+#include "aes-intel_asm.S"
+
+.text
+
+#define STATE1 %xmm0
+#define STATE2 %xmm1
+#define STATE3 %xmm2
+#define STATE4 %xmm3
+#define STATE5 %xmm4
+#define STATE6 %xmm5
+#define STATE7 %xmm6
+#define STATE8 %xmm7
+#define STATE STATE1
+
+#define IV %xmm9
+#define KEY %xmm10
+#define BSWAP_MASK %xmm11
+#define CTR %xmm12
+#define INC %xmm13
+
+#ifdef __x86_64__
+#define IN1 %xmm8
+#define IN2 %xmm9
+#define IN3 %xmm10
+#define IN4 %xmm11
+#define IN5 %xmm12
+#define IN6 %xmm13
+#define IN7 %xmm14
+#define IN8 %xmm15
+#define IN IN1
+#define TCTR_LOW %r11
+#else
+#define IN %xmm1
+#endif
+
+#ifdef __x86_64__
+#define AREG %rax
+#define HANDLEP %rdi
+#define OUTP %rsi
+#define KLEN %r9d
+#define INP %rdx
+#define T1 %r10
+#define LEN %rcx
+#define IVP %r8
+#else
+#define AREG %eax
+#define HANDLEP %edi
+#define OUTP AREG
+#define KLEN %ebx
+#define INP %edx
+#define T1 %ecx
+#define LEN %esi
+#define IVP %ebp
+#endif
+
+#define UKEYP OUTP
+#define GF128MUL_MASK %xmm11
+
+/*
+ * int aeskl_setkey(struct crypto_aes_ctx *ctx, const u8 *in_key, unsigned int key_len)
+ */
+SYM_FUNC_START(aeskl_setkey)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ push HANDLEP
+ movl (FRAME_OFFSET+8)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+12)(%esp), UKEYP # in_key
+ movl (FRAME_OFFSET+16)(%esp), %edx # key_len
+#endif
+ movl %edx, 480(HANDLEP)
+ movdqu (UKEYP), STATE1
+ mov $1, %eax
+ cmp $16, %dl
+ je .Lsetkey_128
+
+ movdqu 0x10(UKEYP), STATE2
+ encodekey256 %eax, %eax
+ movdqu STATE4, 0x30(HANDLEP)
+ jmp .Lsetkey_end
+.Lsetkey_128:
+ encodekey128 %eax, %eax
+
+.Lsetkey_end:
+ movdqu STATE1, (HANDLEP)
+ movdqu STATE2, 0x10(HANDLEP)
+ movdqu STATE3, 0x20(HANDLEP)
+
+ xor AREG, AREG
+#ifndef __x86_64__
+ popl HANDLEP
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(aeskl_setkey)
+
+/*
+ * int _aeskl_enc(const void *ctx, u8 *dst, const u8 *src)
+ */
+SYM_FUNC_START(_aeskl_enc)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ pushl HANDLEP
+ pushl KLEN
+ movl (FRAME_OFFSET+12)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+16)(%esp), OUTP # dst
+ movl (FRAME_OFFSET+20)(%esp), INP # src
+#endif
+ movdqu (INP), STATE
+ movl 480(HANDLEP), KLEN
+
+ cmp $16, KLEN
+ je .Lenc_128
+ aesenc256kl (HANDLEP), STATE
+ jz .Lenc_err
+ jmp .Lenc_noerr
+.Lenc_128:
+ aesenc128kl (HANDLEP), STATE
+ jz .Lenc_err
+
+.Lenc_noerr:
+ xor AREG, AREG
+ jmp .Lenc_end
+.Lenc_err:
+ mov $1, AREG
+.Lenc_end:
+ movdqu STATE, (OUTP)
+#ifndef __x86_64__
+ popl KLEN
+ popl HANDLEP
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_enc)
+
+/*
+ * int _aeskl_dec(const void *ctx, u8 *dst, const u8 *src)
+ */
+SYM_FUNC_START(_aeskl_dec)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ pushl HANDLEP
+ pushl KLEN
+ movl (FRAME_OFFSET+12)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+16)(%esp), OUTP # dst
+ movl (FRAME_OFFSET+20)(%esp), INP # src
+#endif
+ movdqu (INP), STATE
+ mov 480(HANDLEP), KLEN
+
+ cmp $16, KLEN
+ je .Ldec_128
+ aesdec256kl (HANDLEP), STATE
+ jz .Ldec_err
+ jmp .Ldec_noerr
+.Ldec_128:
+ aesdec128kl (HANDLEP), STATE
+ jz .Ldec_err
+
+.Ldec_noerr:
+ xor AREG, AREG
+ jmp .Ldec_end
+.Ldec_err:
+ mov $1, AREG
+.Ldec_end:
+ movdqu STATE, (OUTP)
+#ifndef __x86_64__
+ popl KLEN
+ popl HANDLEP
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_dec)
+
+/*
+ * int _aeskl_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, size_t len)
+ */
+SYM_FUNC_START(_aeskl_ecb_enc)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ pushl LEN
+ pushl HANDLEP
+ pushl KLEN
+ movl (FRAME_OFFSET+16)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+20)(%esp), OUTP # dst
+ movl (FRAME_OFFSET+24)(%esp), INP # src
+ movl (FRAME_OFFSET+28)(%esp), LEN # len
+#endif
+ test LEN, LEN
+ jz .Lecb_enc_noerr
+ mov 480(HANDLEP), KLEN
+ cmp $16, LEN
+ jb .Lecb_enc_noerr
+ cmp $128, LEN
+ jb .Lecb_enc1
+
+.align 4
+.Lecb_enc8:
+ movdqu (INP), STATE1
+ movdqu 0x10(INP), STATE2
+ movdqu 0x20(INP), STATE3
+ movdqu 0x30(INP), STATE4
+ movdqu 0x40(INP), STATE5
+ movdqu 0x50(INP), STATE6
+ movdqu 0x60(INP), STATE7
+ movdqu 0x70(INP), STATE8
+
+ cmp $16, KLEN
+ je .Lecb_enc8_128
+ aesencwide256kl (HANDLEP)
+ jz .Lecb_enc_err
+ jmp .Lecb_enc8_end
+.Lecb_enc8_128:
+ aesencwide128kl (HANDLEP)
+ jz .Lecb_enc_err
+
+.Lecb_enc8_end:
+ movdqu STATE1, (OUTP)
+ movdqu STATE2, 0x10(OUTP)
+ movdqu STATE3, 0x20(OUTP)
+ movdqu STATE4, 0x30(OUTP)
+ movdqu STATE5, 0x40(OUTP)
+ movdqu STATE6, 0x50(OUTP)
+ movdqu STATE7, 0x60(OUTP)
+ movdqu STATE8, 0x70(OUTP)
+
+ sub $128, LEN
+ add $128, INP
+ add $128, OUTP
+ cmp $128, LEN
+ jge .Lecb_enc8
+ cmp $16, LEN
+ jb .Lecb_enc_noerr
+
+.align 4
+.Lecb_enc1:
+ movdqu (INP), STATE1
+ cmp $16, KLEN
+ je .Lecb_enc1_128
+ aesenc256kl (HANDLEP), STATE
+ jz .Lecb_enc_err
+ jmp .Lecb_enc1_end
+.Lecb_enc1_128:
+ aesenc128kl (HANDLEP), STATE
+ jz .Lecb_enc_err
+
+.Lecb_enc1_end:
+ movdqu STATE1, (OUTP)
+ sub $16, LEN
+ add $16, INP
+ add $16, OUTP
+ cmp $16, LEN
+ jge .Lecb_enc1
+
+.Lecb_enc_noerr:
+ xor AREG, AREG
+ jmp .Lecb_enc_end
+.Lecb_enc_err:
+ mov $1, AREG
+.Lecb_enc_end:
+#ifndef __x86_64__
+ popl KLEN
+ popl HANDLEP
+ popl LEN
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_ecb_enc)
+
+/*
+ * int _aeskl_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, size_t len);
+ */
+SYM_FUNC_START(_aeskl_ecb_dec)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ pushl LEN
+ pushl HANDLEP
+ pushl KLEN
+ movl (FRAME_OFFSET+16)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+20)(%esp), OUTP # dst
+ movl (FRAME_OFFSET+24)(%esp), INP # src
+ movl (FRAME_OFFSET+28)(%esp), LEN # len
+#endif
+
+ test LEN, LEN
+ jz .Lecb_dec_noerr
+ mov 480(HANDLEP), KLEN
+ cmp $16, LEN
+ jb .Lecb_dec_noerr
+ cmp $128, LEN
+ jb .Lecb_dec1
+
+.align 4
+.Lecb_dec8:
+ movdqu (INP), STATE1
+ movdqu 0x10(INP), STATE2
+ movdqu 0x20(INP), STATE3
+ movdqu 0x30(INP), STATE4
+ movdqu 0x40(INP), STATE5
+ movdqu 0x50(INP), STATE6
+ movdqu 0x60(INP), STATE7
+ movdqu 0x70(INP), STATE8
+
+ cmp $16, KLEN
+ je .Lecb_dec8_128
+ aesdecwide256kl (HANDLEP)
+ jz .Lecb_dec_err
+ jmp .Lecb_dec8_end
+.Lecb_dec8_128:
+ aesdecwide128kl (HANDLEP)
+ jz .Lecb_dec_err
+
+.Lecb_dec8_end:
+ movdqu STATE1, (OUTP)
+ movdqu STATE2, 0x10(OUTP)
+ movdqu STATE3, 0x20(OUTP)
+ movdqu STATE4, 0x30(OUTP)
+ movdqu STATE5, 0x40(OUTP)
+ movdqu STATE6, 0x50(OUTP)
+ movdqu STATE7, 0x60(OUTP)
+ movdqu STATE8, 0x70(OUTP)
+
+ sub $128, LEN
+ add $128, INP
+ add $128, OUTP
+ cmp $128, LEN
+ jge .Lecb_dec8
+ cmp $16, LEN
+ jb .Lecb_dec_noerr
+
+.align 4
+.Lecb_dec1:
+ movdqu (INP), STATE1
+ cmp $16, KLEN
+ je .Lecb_dec1_128
+ aesdec256kl (HANDLEP), STATE
+ jz .Lecb_dec_err
+ jmp .Lecb_dec1_end
+.Lecb_dec1_128:
+ aesdec128kl (HANDLEP), STATE
+ jz .Lecb_dec_err
+
+.Lecb_dec1_end:
+ movdqu STATE1, (OUTP)
+ sub $16, LEN
+ add $16, INP
+ add $16, OUTP
+ cmp $16, LEN
+ jge .Lecb_dec1
+
+.Lecb_dec_noerr:
+ xor AREG, AREG
+ jmp .Lecb_dec_end
+.Lecb_dec_err:
+ mov $1, AREG
+.Lecb_dec_end:
+#ifndef __x86_64__
+ popl KLEN
+ popl HANDLEP
+ popl LEN
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_ecb_dec)
+
+/*
+ * int _aeskl_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, size_t len, u8 *iv)
+ */
+SYM_FUNC_START(_aeskl_cbc_enc)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ pushl IVP
+ pushl LEN
+ pushl HANDLEP
+ pushl KLEN
+ movl (FRAME_OFFSET+20)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+24)(%esp), OUTP # dst
+ movl (FRAME_OFFSET+28)(%esp), INP # src
+ movl (FRAME_OFFSET+32)(%esp), LEN # len
+ movl (FRAME_OFFSET+36)(%esp), IVP # iv
+#endif
+
+ cmp $16, LEN
+ jb .Lcbc_enc_noerr
+ mov 480(HANDLEP), KLEN
+ movdqu (IVP), STATE
+
+.align 4
+.Lcbc_enc1:
+ movdqu (INP), IN
+ pxor IN, STATE
+
+ cmp $16, KLEN
+ je .Lcbc_enc1_128
+ aesenc256kl (HANDLEP), STATE
+ jz .Lcbc_enc_err
+ jmp .Lcbc_enc1_end
+.Lcbc_enc1_128:
+ aesenc128kl (HANDLEP), STATE
+ jz .Lcbc_enc_err
+
+.Lcbc_enc1_end:
+ movdqu STATE, (OUTP)
+ sub $16, LEN
+ add $16, INP
+ add $16, OUTP
+ cmp $16, LEN
+ jge .Lcbc_enc1
+ movdqu STATE, (IVP)
+
+.Lcbc_enc_noerr:
+ xor AREG, AREG
+ jmp .Lcbc_enc_end
+.Lcbc_enc_err:
+ mov $1, AREG
+.Lcbc_enc_end:
+#ifndef __x86_64__
+ popl KLEN
+ popl HANDLEP
+ popl LEN
+ popl IVP
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_cbc_enc)
+
+/*
+ * int _aeskl_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, size_t len, u8 *iv)
+ */
+SYM_FUNC_START(_aeskl_cbc_dec)
+ FRAME_BEGIN
+#ifndef __x86_64__
+ pushl IVP
+ pushl LEN
+ pushl HANDLEP
+ pushl KLEN
+ movl (FRAME_OFFSET+20)(%esp), HANDLEP # ctx
+ movl (FRAME_OFFSET+24)(%esp), OUTP # dst
+ movl (FRAME_OFFSET+28)(%esp), INP # src
+ movl (FRAME_OFFSET+32)(%esp), LEN # len
+ movl (FRAME_OFFSET+36)(%esp), IVP # iv
+#endif
+
+ cmp $16, LEN
+ jb .Lcbc_dec_noerr
+ mov 480(HANDLEP), KLEN
+#ifdef __x86_64__
+ cmp $128, LEN
+ jb .Lcbc_dec1_pre
+
+.align 4
+.Lcbc_dec8:
+ movdqu 0x0(INP), STATE1
+ movdqu 0x10(INP), STATE2
+ movdqu 0x20(INP), STATE3
+ movdqu 0x30(INP), STATE4
+ movdqu 0x40(INP), STATE5
+ movdqu 0x50(INP), STATE6
+ movdqu 0x60(INP), STATE7
+ movdqu 0x70(INP), STATE8
+
+ movdqu (IVP), IN1
+ movdqa STATE1, IN2
+ movdqa STATE2, IN3
+ movdqa STATE3, IN4
+ movdqa STATE4, IN5
+ movdqa STATE5, IN6
+ movdqa STATE6, IN7
+ movdqa STATE7, IN8
+ movdqu STATE8, (IVP)
+
+ cmp $16, KLEN
+ je .Lcbc_dec8_128
+ aesdecwide256kl (HANDLEP)
+ jz .Lcbc_dec_err
+ jmp .Lcbc_dec8_end
+.Lcbc_dec8_128:
+ aesdecwide128kl (HANDLEP)
+ jz .Lcbc_dec_err
+
+.Lcbc_dec8_end:
+ pxor IN1, STATE1
+ pxor IN2, STATE2
+ pxor IN3, STATE3
+ pxor IN4, STATE4
+ pxor IN5, STATE5
+ pxor IN6, STATE6
+ pxor IN7, STATE7
+ pxor IN8, STATE8
+
+ movdqu STATE1, 0x0(OUTP)
+ movdqu STATE2, 0x10(OUTP)
+ movdqu STATE3, 0x20(OUTP)
+ movdqu STATE4, 0x30(OUTP)
+ movdqu STATE5, 0x40(OUTP)
+ movdqu STATE6, 0x50(OUTP)
+ movdqu STATE7, 0x60(OUTP)
+ movdqu STATE8, 0x70(OUTP)
+
+ sub $128, LEN
+ add $128, INP
+ add $128, OUTP
+ cmp $128, LEN
+ jge .Lcbc_dec8
+ cmp $16, LEN
+ jb .Lcbc_dec_noerr
+#endif
+
+.align 4
+.Lcbc_dec1_pre:
+ movdqu (IVP), STATE3
+.Lcbc_dec1:
+ movdqu (INP), STATE2
+ movdqa STATE2, STATE1
+
+ cmp $16, KLEN
+ je .Lcbc_dec1_128
+ aesdec256kl (HANDLEP), STATE1
+ jz .Lcbc_dec_err
+ jmp .Lcbc_dec1_end
+.Lcbc_dec1_128:
+ aesdec128kl (HANDLEP), STATE1
+ jz .Lcbc_dec_err
+
+.Lcbc_dec1_end:
+ pxor STATE3, STATE1
+ movdqu STATE1, (OUTP)
+ movdqa STATE2, STATE3
+ sub $16, LEN
+ add $16, INP
+ add $16, OUTP
+ cmp $16, LEN
+ jge .Lcbc_dec1
+ movdqu STATE3, (IVP)
+
+.Lcbc_dec_noerr:
+ xor AREG, AREG
+ jmp .Lcbc_dec_end
+.Lcbc_dec_err:
+ mov $1, AREG
+.Lcbc_dec_end:
+#ifndef __x86_64__
+ popl KLEN
+ popl HANDLEP
+ popl LEN
+ popl IVP
+#endif
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_cbc_dec)
+
+#ifdef __x86_64__
+
+/*
+ * _aeskl_ctr_inc_init: internal ABI
+ * setup registers used by _aesni_inc
+ * input:
+ * IV
+ * output:
+ * CTR: == IV, in little endian
+ * TCTR_LOW: == lower qword of CTR
+ * INC: == 1, in little endian
+ * BSWAP_MASK == endian swapping mask
+ */
+SYM_FUNC_START_LOCAL(_aeskl_ctr_inc_init)
+ movaps .Lbswap_mask, BSWAP_MASK
+ movaps IV, CTR
+ pshufb BSWAP_MASK, CTR
+ mov $1, TCTR_LOW
+ movq TCTR_LOW, INC
+ movq CTR, TCTR_LOW
+ ret
+SYM_FUNC_END(_aeskl_ctr_inc_init)
+
+/*
+ * _aeskl_ctr_inc: internal ABI
+ * Increase IV by 1, IV is in big endian
+ * input:
+ * IV
+ * CTR: == IV, in little endian
+ * TCTR_LOW: == lower qword of CTR
+ * INC: == 1, in little endian
+ * BSWAP_MASK == endian swapping mask
+ * output:
+ * IV: Increase by 1
+ * changed:
+ * CTR: == output IV, in little endian
+ * TCTR_LOW: == lower qword of CTR
+ */
+SYM_FUNC_START_LOCAL(_aeskl_ctr_inc)
+ paddq INC, CTR
+ add $1, TCTR_LOW
+ jnc .Linc_low
+ pslldq $8, INC
+ paddq INC, CTR
+ psrldq $8, INC
+.Linc_low:
+ movaps CTR, IV
+ pshufb BSWAP_MASK, IV
+ ret
+SYM_FUNC_END(_aeskl_ctr_inc)
+
+/*
+ * CTR implementations
+ */
+
+/*
+ * int _aeskl_ctr_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, size_t len, u8 *iv)
+ */
+SYM_FUNC_START(_aeskl_ctr_enc)
+ FRAME_BEGIN
+ cmp $16, LEN
+ jb .Lctr_enc_noerr
+ mov 480(HANDLEP), KLEN
+ movdqu (IVP), IV
+ call _aeskl_ctr_inc_init
+ cmp $128, LEN
+ jb .Lctr_enc1
+
+.align 4
+.Lctr_enc8:
+ movaps IV, STATE1
+ call _aeskl_ctr_inc
+ movaps IV, STATE2
+ call _aeskl_ctr_inc
+ movaps IV, STATE3
+ call _aeskl_ctr_inc
+ movaps IV, STATE4
+ call _aeskl_ctr_inc
+ movaps IV, STATE5
+ call _aeskl_ctr_inc
+ movaps IV, STATE6
+ call _aeskl_ctr_inc
+ movaps IV, STATE7
+ call _aeskl_ctr_inc
+ movaps IV, STATE8
+ call _aeskl_ctr_inc
+
+ cmp $16, KLEN
+ je .Lctr_enc8_128
+ aesencwide256kl (%rdi)
+ jz .Lctr_enc_err
+ jmp .Lctr_enc8_end
+.Lctr_enc8_128:
+ aesencwide128kl (%rdi)
+ jz .Lctr_enc_err
+.Lctr_enc8_end:
+
+ movups (INP), IN1
+ pxor IN1, STATE1
+ movups STATE1, (OUTP)
+
+ movups 0x10(INP), IN1
+ pxor IN1, STATE2
+ movups STATE2, 0x10(OUTP)
+
+ movups 0x20(INP), IN1
+ pxor IN1, STATE3
+ movups STATE3, 0x20(OUTP)
+
+ movups 0x30(INP), IN1
+ pxor IN1, STATE4
+ movups STATE4, 0x30(OUTP)
+
+ movups 0x40(INP), IN1
+ pxor IN1, STATE5
+ movups STATE5, 0x40(OUTP)
+
+ movups 0x50(INP), IN1
+ pxor IN1, STATE6
+ movups STATE6, 0x50(OUTP)
+
+ movups 0x60(INP), IN1
+ pxor IN1, STATE7
+ movups STATE7, 0x60(OUTP)
+
+ movups 0x70(INP), IN1
+ pxor IN1, STATE8
+ movups STATE8, 0x70(OUTP)
+
+ sub $128, LEN
+ add $128, INP
+ add $128, OUTP
+ cmp $128, LEN
+ jge .Lctr_enc8
+ cmp $16, LEN
+ jb .Lctr_enc_end
+
+.align 4
+.Lctr_enc1:
+ movaps IV, STATE1
+ call _aeskl_ctr_inc
+
+ cmp $16, KLEN
+ je .Lctr_enc1_128
+ aesenc256kl (HANDLEP), STATE1
+ jz .Lctr_enc_err
+ jmp .Lctr_enc1_end
+.Lctr_enc1_128:
+ aesenc128kl (HANDLEP), STATE1
+ jz .Lctr_enc_err
+
+.Lctr_enc1_end:
+ movups (INP), IN1
+ pxor IN1, STATE1
+ movups STATE1, (OUTP)
+ sub $16, LEN
+ add $16, INP
+ add $16, OUTP
+ cmp $16, LEN
+ jge .Lctr_enc1
+
+.Lctr_enc_end:
+ movdqu IV, (IVP)
+.Lctr_enc_noerr:
+ xor AREG, AREG
+ jmp .Lctr_enc_ret
+.Lctr_enc_err:
+ mov $1, AREG
+.Lctr_enc_ret:
+ FRAME_END
+ ret
+SYM_FUNC_END(_aeskl_ctr_enc)
+
+/*
+ * XTS implementation
+ */
+
+/*
+ * _aeskl_gf128mul_x_ble: internal ABI
+ * Multiply in GF(2^128) for XTS IVs
+ * input:
+ * IV: current IV
+ * GF128MUL_MASK == mask with 0x87 and 0x01
+ * output:
+ * IV: next IV
+ * changed:
+ * CTR: == temporary value
+ */
+#define _aeskl_gf128mul_x_ble() \
+ pshufd $0x13, IV, KEY; \
+ paddq IV, IV; \
+ psrad $31, KEY; \
+ pand GF128MUL_MASK, KEY; \
+ pxor KEY, IV;
+
+/*
+ * int _aeskl_xts_encrypt(const struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src,
+ * unsigned int len, le128 *iv)
+ */
+SYM_FUNC_START(_aeskl_xts_encrypt)
+ FRAME_BEGIN
+ movdqa .Lgf128mul_x_ble_mask(%rip), GF128MUL_MASK
+ movups (IVP), IV
+
+ mov 480(HANDLEP), KLEN
+
+.Lxts_enc8:
+ sub $128, LEN
+ jl .Lxts_enc1_pre
+
+ movdqa IV, STATE1
+ movdqu (INP), INC
+ pxor INC, STATE1
+ movdqu IV, (OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE2
+ movdqu 0x10(INP), INC
+ pxor INC, STATE2
+ movdqu IV, 0x10(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE3
+ movdqu 0x20(INP), INC
+ pxor INC, STATE3
+ movdqu IV, 0x20(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE4
+ movdqu 0x30(INP), INC
+ pxor INC, STATE4
+ movdqu IV, 0x30(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE5
+ movdqu 0x40(INP), INC
+ pxor INC, STATE5
+ movdqu IV, 0x40(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE6
+ movdqu 0x50(INP), INC
+ pxor INC, STATE6
+ movdqu IV, 0x50(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE7
+ movdqu 0x60(INP), INC
+ pxor INC, STATE7
+ movdqu IV, 0x60(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE8
+ movdqu 0x70(INP), INC
+ pxor INC, STATE8
+ movdqu IV, 0x70(OUTP)
+
+ cmp $16, KLEN
+ je .Lxts_enc8_128
+ aesencwide256kl (%rdi)
+ jz .Lxts_enc_ret_err
+ jmp .Lxts_enc8_end
+.Lxts_enc8_128:
+ aesencwide128kl (%rdi)
+ jz .Lxts_enc_ret_err
+
+.Lxts_enc8_end:
+ movdqu 0x00(OUTP), INC
+ pxor INC, STATE1
+ movdqu STATE1, 0x00(OUTP)
+
+ movdqu 0x10(OUTP), INC
+ pxor INC, STATE2
+ movdqu STATE2, 0x10(OUTP)
+
+ movdqu 0x20(OUTP), INC
+ pxor INC, STATE3
+ movdqu STATE3, 0x20(OUTP)
+
+ movdqu 0x30(OUTP), INC
+ pxor INC, STATE4
+ movdqu STATE4, 0x30(OUTP)
+
+ movdqu 0x40(OUTP), INC
+ pxor INC, STATE5
+ movdqu STATE5, 0x40(OUTP)
+
+ movdqu 0x50(OUTP), INC
+ pxor INC, STATE6
+ movdqu STATE6, 0x50(OUTP)
+
+ movdqu 0x60(OUTP), INC
+ pxor INC, STATE7
+ movdqu STATE7, 0x60(OUTP)
+
+ movdqu 0x70(OUTP), INC
+ pxor INC, STATE8
+ movdqu STATE8, 0x70(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+
+ add $128, INP
+ add $128, OUTP
+ test LEN, LEN
+ jnz .Lxts_enc8
+
+.Lxts_enc_ret_iv:
+ movups IV, (IVP)
+.Lxts_enc_ret_noerr:
+ xor AREG, AREG
+ jmp .Lxts_enc_ret
+.Lxts_enc_ret_err:
+ mov $1, AREG
+.Lxts_enc_ret:
+ FRAME_END
+ ret
+
+.Lxts_enc1_pre:
+ add $128, LEN
+ jz .Lxts_enc_ret_iv
+ sub $16, LEN
+ jl .Lxts_enc_cts4
+
+.Lxts_enc1:
+ movdqu (INP), STATE1
+ pxor IV, STATE1
+
+ cmp $16, KLEN
+ je .Lxts_enc1_128
+ aesenc256kl (HANDLEP), STATE1
+ jz .Lxts_enc_ret_err
+ jmp .Lxts_enc1_end
+.Lxts_enc1_128:
+ aesenc128kl (HANDLEP), STATE1
+ jz .Lxts_enc_ret_err
+
+.Lxts_enc1_end:
+ pxor IV, STATE1
+ _aeskl_gf128mul_x_ble()
+
+ test LEN, LEN
+ jz .Lxts_enc1_out
+
+ add $16, INP
+ sub $16, LEN
+ jl .Lxts_enc_cts1
+
+ movdqu STATE1, (OUTP)
+ add $16, OUTP
+ jmp .Lxts_enc1
+
+.Lxts_enc1_out:
+ movdqu STATE1, (OUTP)
+ jmp .Lxts_enc_ret_iv
+
+.Lxts_enc_cts4:
+ movdqu STATE8, STATE1
+ sub $16, OUTP
+
+.Lxts_enc_cts1:
+ lea .Lcts_permute_table(%rip), T1
+ add LEN, INP /* rewind input pointer */
+ add $16, LEN /* # bytes in final block */
+ movups (INP), IN1
+
+ mov T1, IVP
+ add $32, IVP
+ add LEN, T1
+ sub LEN, IVP
+ add OUTP, LEN
+
+ movups (T1), STATE2
+ movaps STATE1, STATE3
+ pshufb STATE2, STATE1
+ movups STATE1, (LEN)
+
+ movups (IVP), STATE1
+ pshufb STATE1, IN1
+ pblendvb STATE3, IN1
+ movaps IN1, STATE1
+
+ pxor IV, STATE1
+
+ cmp $16, KLEN
+ je .Lxts_enc1_cts_128
+ aesenc256kl (HANDLEP), STATE1
+ jz .Lxts_enc_ret_err
+ jmp .Lxts_enc1_cts_end
+.Lxts_enc1_cts_128:
+ aesenc128kl (HANDLEP), STATE1
+ jz .Lxts_enc_ret_err
+
+.Lxts_enc1_cts_end:
+ pxor IV, STATE1
+ movups STATE1, (OUTP)
+ jmp .Lxts_enc_ret_noerr
+SYM_FUNC_END(_aeskl_xts_encrypt)
+
+/*
+ * int _aeskl_xts_decrypt(const struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src,
+ * unsigned int len, le128 *iv)
+ */
+SYM_FUNC_START(_aeskl_xts_decrypt)
+ FRAME_BEGIN
+ movdqa .Lgf128mul_x_ble_mask(%rip), GF128MUL_MASK
+ movups (IVP), IV
+
+ mov 480(HANDLEP), KLEN
+
+ test $15, LEN
+ jz .Lxts_dec8
+ sub $16, LEN
+
+.Lxts_dec8:
+ sub $128, LEN
+ jl .Lxts_dec1_pre
+
+ movdqa IV, STATE1
+ movdqu (INP), INC
+ pxor INC, STATE1
+ movdqu IV, (OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE2
+ movdqu 0x10(INP), INC
+ pxor INC, STATE2
+ movdqu IV, 0x10(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE3
+ movdqu 0x20(INP), INC
+ pxor INC, STATE3
+ movdqu IV, 0x20(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE4
+ movdqu 0x30(INP), INC
+ pxor INC, STATE4
+ movdqu IV, 0x30(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE5
+ movdqu 0x40(INP), INC
+ pxor INC, STATE5
+ movdqu IV, 0x40(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE6
+ movdqu 0x50(INP), INC
+ pxor INC, STATE6
+ movdqu IV, 0x50(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE7
+ movdqu 0x60(INP), INC
+ pxor INC, STATE7
+ movdqu IV, 0x60(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+ movdqa IV, STATE8
+ movdqu 0x70(INP), INC
+ pxor INC, STATE8
+ movdqu IV, 0x70(OUTP)
+
+ cmp $16, KLEN
+ je .Lxts_dec8_128
+ aesdecwide256kl (%rdi)
+ jz .Lxts_dec_ret_err
+ jmp .Lxts_dec8_end
+.Lxts_dec8_128:
+ aesdecwide128kl (%rdi)
+ jz .Lxts_dec_ret_err
+
+.Lxts_dec8_end:
+ movdqu 0x00(OUTP), INC
+ pxor INC, STATE1
+ movdqu STATE1, 0x00(OUTP)
+
+ movdqu 0x10(OUTP), INC
+ pxor INC, STATE2
+ movdqu STATE2, 0x10(OUTP)
+
+ movdqu 0x20(OUTP), INC
+ pxor INC, STATE3
+ movdqu STATE3, 0x20(OUTP)
+
+ movdqu 0x30(OUTP), INC
+ pxor INC, STATE4
+ movdqu STATE4, 0x30(OUTP)
+
+ movdqu 0x40(OUTP), INC
+ pxor INC, STATE5
+ movdqu STATE5, 0x40(OUTP)
+
+ movdqu 0x50(OUTP), INC
+ pxor INC, STATE6
+ movdqu STATE6, 0x50(OUTP)
+
+ movdqu 0x60(OUTP), INC
+ pxor INC, STATE7
+ movdqu STATE7, 0x60(OUTP)
+
+ movdqu 0x70(OUTP), INC
+ pxor INC, STATE8
+ movdqu STATE8, 0x70(OUTP)
+
+ _aeskl_gf128mul_x_ble()
+
+ add $128, INP
+ add $128, OUTP
+ test LEN, LEN
+ jnz .Lxts_dec8
+
+.Lxts_dec_ret_iv:
+ movups IV, (IVP)
+.Lxts_dec_ret_noerr:
+ xor AREG, AREG
+ jmp .Lxts_dec_ret
+.Lxts_dec_ret_err:
+ mov $1, AREG
+.Lxts_dec_ret:
+ FRAME_END
+ ret
+
+.Lxts_dec1_pre:
+ add $128, LEN
+ jz .Lxts_dec_ret_iv
+
+.Lxts_dec1:
+ movdqu (INP), STATE1
+
+ add $16, INP
+ sub $16, LEN
+ jl .Lxts_dec_cts1
+
+ pxor IV, STATE1
+
+ cmp $16, KLEN
+ je .Lxts_dec1_128
+ aesdec256kl (HANDLEP), STATE1
+ jz .Lxts_dec_ret_err
+ jmp .Lxts_dec1_end
+.Lxts_dec1_128:
+ aesdec128kl (HANDLEP), STATE1
+ jz .Lxts_dec_ret_err
+
+.Lxts_dec1_end:
+ pxor IV, STATE1
+ _aeskl_gf128mul_x_ble()
+
+ test LEN, LEN
+ jz .Lxts_dec1_out
+
+ movdqu STATE1, (OUTP)
+ add $16, OUTP
+ jmp .Lxts_dec1
+
+.Lxts_dec1_out:
+ movdqu STATE1, (OUTP)
+ jmp .Lxts_dec_ret_iv
+
+.Lxts_dec_cts1:
+ movdqa IV, STATE5
+ _aeskl_gf128mul_x_ble()
+
+ pxor IV, STATE1
+
+ cmp $16, KLEN
+ je .Lxts_dec1_cts_pre_128
+ aesdec256kl (HANDLEP), STATE1
+ jz .Lxts_dec_ret_err
+ jmp .Lxts_dec1_cts_pre_end
+.Lxts_dec1_cts_pre_128:
+ aesdec128kl (HANDLEP), STATE1
+ jz .Lxts_dec_ret_err
+
+.Lxts_dec1_cts_pre_end:
+ pxor IV, STATE1
+
+ lea .Lcts_permute_table(%rip), T1
+ add LEN, INP /* rewind input pointer */
+ add $16, LEN /* # bytes in final block */
+ movups (INP), IN1
+
+ mov T1, IVP
+ add $32, IVP
+ add LEN, T1
+ sub LEN, IVP
+ add OUTP, LEN
+
+ movups (T1), STATE2
+ movaps STATE1, STATE3
+ pshufb STATE2, STATE1
+ movups STATE1, (LEN)
+
+ movups (IVP), STATE1
+ pshufb STATE1, IN1
+ pblendvb STATE3, IN1
+ movaps IN1, STATE1
+
+ pxor STATE5, STATE1
+
+ cmp $16, KLEN
+ je .Lxts_dec1_cts_128
+ aesdec256kl (HANDLEP), STATE1
+ jz .Lxts_dec_ret_err
+ jmp .Lxts_dec1_cts_end
+.Lxts_dec1_cts_128:
+ aesdec128kl (HANDLEP), STATE1
+ jz .Lxts_dec_ret_err
+
+.Lxts_dec1_cts_end:
+ pxor STATE5, STATE1
+
+ movups STATE1, (OUTP)
+ jmp .Lxts_dec_ret_noerr
+
+SYM_FUNC_END(_aeskl_xts_decrypt)
+
+#endif
diff --git a/arch/x86/crypto/aeskl-intel_glue.c b/arch/x86/crypto/aeskl-intel_glue.c
new file mode 100644
index 000000000000..e0a052e89fa0
--- /dev/null
+++ b/arch/x86/crypto/aeskl-intel_glue.c
@@ -0,0 +1,390 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Support for AES Key Locker instructions. This file contains glue
+ * code and the real AES implementation is in aeskl-intel_asm.S.
+ *
+ * Most code is based on AES-NI glue code, aesni-intel_glue.c
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <crypto/algapi.h>
+#include <crypto/aes.h>
+#include <crypto/xts.h>
+#include <asm/cpu_device_id.h>
+#include <asm/fpu/api.h>
+#include <asm/simd.h>
+#include <asm/keylocker.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/internal/simd.h>
+#include "aes-intel_glue.h"
+#include "aesni-intel_glue.h"
+
+asmlinkage int aeskl_setkey(struct crypto_aes_ctx *ctx, const u8 *in_key, unsigned int key_len);
+
+asmlinkage int _aeskl_enc(const void *ctx, u8 *out, const u8 *in);
+asmlinkage int _aeskl_dec(const void *ctx, u8 *out, const u8 *in);
+
+asmlinkage int _aeskl_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len);
+asmlinkage int _aeskl_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len);
+
+asmlinkage int _aeskl_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len,
+ u8 *iv);
+asmlinkage int _aeskl_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len,
+ u8 *iv);
+
+#ifdef CONFIG_X86_64
+asmlinkage int _aeskl_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len,
+ u8 *iv);
+
+asmlinkage int _aeskl_xts_encrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in,
+ unsigned int len, u8 *iv);
+asmlinkage int _aeskl_xts_decrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in,
+ unsigned int len, u8 *iv);
+#endif
+
+static int aeskl_setkey_common(struct crypto_tfm *tfm, void *raw_ctx, const u8 *in_key,
+ unsigned int key_len)
+{
+ struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx);
+ int err;
+
+ if (!crypto_simd_usable())
+ return -EBUSY;
+
+ if ((key_len != AES_KEYSIZE_128) && (key_len != AES_KEYSIZE_192) &&
+ (key_len != AES_KEYSIZE_256))
+ return -EINVAL;
+
+ kernel_fpu_begin();
+ /*
+ * For 128-bit and 256-bit keys, encode to a handle that is usable only
+ * in kernel mode. Use AES-NI instructions for 192-bit keys.
+ */
+ if (likely(key_len != AES_KEYSIZE_192))
+ err = aeskl_setkey(ctx, in_key, key_len);
+ else
+ err = aesni_set_key(ctx, in_key, key_len);
+ kernel_fpu_end();
+
+ return err;
+}
+
+static inline u32 keylength(const void *raw_ctx)
+{
+ struct crypto_aes_ctx *ctx = aes_ctx((void *)raw_ctx);
+
+ return ctx->key_length;
+}
+
+static inline int aeskl_enc(const void *ctx, u8 *out, const u8 *in)
+{
+ if (unlikely(keylength(ctx) == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_enc(ctx, out, in))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static inline int aeskl_dec(const void *ctx, u8 *out, const u8 *in)
+{
+ if (unlikely(keylength(ctx) == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_dec(ctx, out, in))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static int aeskl_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_ecb_enc(ctx, out, in, len))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static int aeskl_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_ecb_dec(ctx, out, in, len))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static int aeskl_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len,
+ u8 *iv)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_cbc_enc(ctx, out, in, len, iv))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static int aeskl_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len,
+ u8 *iv)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_cbc_dec(ctx, out, in, len, iv))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+#ifdef CONFIG_X86_64
+
+static int aeskl_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in, unsigned int len,
+ u8 *iv)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_ctr_enc(ctx, out, in, len, iv))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static inline int aeskl_xts_encrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in,
+ unsigned int len, u8 *iv)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_xts_encrypt(ctx, out, in, len, iv))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+static inline int aeskl_xts_decrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in,
+ unsigned int len, u8 *iv)
+{
+ if (unlikely(ctx->key_length == AES_KEYSIZE_192))
+ return -EINVAL;
+
+ if (_aeskl_xts_decrypt(ctx, out, in, len, iv))
+ return -EINVAL;
+ else
+ return 0;
+}
+
+#endif /* CONFIG_X86_64 */
+
+static int aeskl_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ unsigned int len)
+{
+ struct crypto_tfm *crypto_tfm = crypto_skcipher_tfm(tfm);
+ void *raw_ctx = crypto_skcipher_ctx(tfm);
+
+ return aeskl_setkey_common(crypto_tfm, raw_ctx, key, len);
+}
+
+static int ecb_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return ecb_crypt_common(req, aeskl_ecb_enc);
+ else
+ return ecb_crypt_common(req, aesni_ecb_enc);
+}
+
+static int ecb_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return ecb_crypt_common(req, aeskl_ecb_dec);
+ else
+ return ecb_crypt_common(req, aesni_ecb_dec);
+}
+
+static int cbc_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return cbc_crypt_common(req, aeskl_cbc_enc);
+ else
+ return cbc_crypt_common(req, aesni_cbc_enc);
+}
+
+static int cbc_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return cbc_crypt_common(req, aeskl_cbc_dec);
+ else
+ return cbc_crypt_common(req, aesni_cbc_dec);
+}
+
+#ifdef CONFIG_X86_64
+
+static int ctr_crypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return ctr_crypt_common(req, aeskl_ctr_enc, aeskl_enc);
+ else
+ return ctr_crypt_common(req, aesni_ctr_enc, aesni_enc);
+}
+
+static int aeskl_xts_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ return xts_setkey_common(tfm, key, keylen, aeskl_setkey_common);
+}
+
+static int xts_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return xts_crypt_common(req, aeskl_xts_encrypt, aeskl_enc);
+ else
+ return xts_crypt_common(req, aesni_xts_encrypt, aesni_enc);
+}
+
+static int xts_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ if (likely(keylength(crypto_skcipher_ctx(tfm)) != AES_KEYSIZE_192))
+ return xts_crypt_common(req, aeskl_xts_decrypt, aeskl_enc);
+ else
+ return xts_crypt_common(req, aesni_xts_decrypt, aesni_enc);
+}
+
+#endif /* CONFIG_X86_64 */
+
+static struct skcipher_alg aeskl_skciphers[] = {
+ {
+ .base = {
+ .cra_name = "__ecb(aes)",
+ .cra_driver_name = "__ecb-aes-aeskl",
+ .cra_priority = 401,
+ .cra_flags = CRYPTO_ALG_INTERNAL,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = CRYPTO_AES_CTX_SIZE,
+ .cra_module = THIS_MODULE,
+ },
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = aeskl_skcipher_setkey,
+ .encrypt = ecb_encrypt,
+ .decrypt = ecb_decrypt,
+ }, {
+ .base = {
+ .cra_name = "__cbc(aes)",
+ .cra_driver_name = "__cbc-aes-aeskl",
+ .cra_priority = 401,
+ .cra_flags = CRYPTO_ALG_INTERNAL,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = CRYPTO_AES_CTX_SIZE,
+ .cra_module = THIS_MODULE,
+ },
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .setkey = aeskl_skcipher_setkey,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+#ifdef CONFIG_X86_64
+ }, {
+ .base = {
+ .cra_name = "__ctr(aes)",
+ .cra_driver_name = "__ctr-aes-aeskl",
+ .cra_priority = 401,
+ .cra_flags = CRYPTO_ALG_INTERNAL,
+ .cra_blocksize = 1,
+ .cra_ctxsize = CRYPTO_AES_CTX_SIZE,
+ .cra_module = THIS_MODULE,
+ },
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .chunksize = AES_BLOCK_SIZE,
+ .setkey = aeskl_skcipher_setkey,
+ .encrypt = ctr_crypt,
+ .decrypt = ctr_crypt,
+ }, {
+ .base = {
+ .cra_name = "__xts(aes)",
+ .cra_driver_name = "__xts-aes-aeskl",
+ .cra_priority = 400,
+ .cra_flags = CRYPTO_ALG_INTERNAL,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = XTS_AES_CTX_SIZE,
+ .cra_module = THIS_MODULE,
+ },
+ .min_keysize = 2 * AES_MIN_KEY_SIZE,
+ .max_keysize = 2 * AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .walksize = 2 * AES_BLOCK_SIZE,
+ .setkey = aeskl_xts_setkey,
+ .encrypt = xts_encrypt,
+ .decrypt = xts_decrypt,
+#endif
+ }
+};
+
+static struct simd_skcipher_alg *aeskl_simd_skciphers[ARRAY_SIZE(aeskl_skciphers)];
+
+static const struct x86_cpu_id aes_keylocker_cpuid[] = {
+ X86_MATCH_FEATURE(X86_FEATURE_AES, NULL),
+ X86_MATCH_FEATURE(X86_FEATURE_KEYLOCKER, NULL),
+ {}
+};
+
+static int __init aeskl_init(void)
+{
+ u32 eax, ebx, ecx, edx;
+ int err;
+
+ if (!x86_match_cpu(aes_keylocker_cpuid))
+ return -ENODEV;
+
+ cpuid_count(KEYLOCKER_CPUID, 0, &eax, &ebx, &ecx, &edx);
+ if (!(ebx & KEYLOCKER_CPUID_EBX_AESKLE) ||
+ !(eax & KEYLOCKER_CPUID_EAX_SUPERVISOR) ||
+ !(ebx & KEYLOCKER_CPUID_EBX_WIDE))
+ return -ENODEV;
+
+ err = simd_register_skciphers_compat(aeskl_skciphers, ARRAY_SIZE(aeskl_skciphers),
+ aeskl_simd_skciphers);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static void __exit aeskl_exit(void)
+{
+ simd_unregister_skciphers(aeskl_skciphers, ARRAY_SIZE(aeskl_skciphers),
+ aeskl_simd_skciphers);
+}
+
+late_initcall(aeskl_init);
+module_exit(aeskl_exit);
+
+MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, AES Key Locker implementation");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CRYPTO("aes");
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ca3b02dcbbfa..5f3d4052fa3c 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1113,6 +1113,29 @@ config CRYPTO_AES_NI_INTEL
ECB, CBC, LRW, XTS. The 64 bit version has additional
acceleration for CTR.
+config CRYPTO_AES_KL
+ tristate "AES cipher algorithms (AES-KL)"
+ depends on X86_KEYLOCKER
+ depends on LD_VERSION >= 23600
+ select CRYPTO_AES_NI_INTEL
+ help
+ Key Locker provides AES SIMD instructions (AES-KL) to protect AES
+ keys. They are analogous to AES-NI. AES-KL supports to encode AES
+ keys and use an encoded form to transform data instead of
+ referencing an AES key all the way.
+
+ The CPU-internal key is used to wrap AES keys. AES-KL relies on
+ the x86 core code that manages the internal key.
+
+ AES-KL supports 128-/256-bit keys. This module uses the AES-NI
+ methods for 192-bit keys. It includes such block cipher mode
+ support as ECB, CBC, CTR, and XTS.
+
+ binutils version 2.36 or later is needed to assemble AES-KL.
+
+ See the CRYPTO_AES_NI_INTEL description for more about the AES
+ algorithm.
+
config CRYPTO_AES_SPARC64
tristate "AES cipher algorithms (SPARC64)"
depends on SPARC64
--
2.17.1
