This patch adds ARM NEON assembly implementation of SHA-512 and SHA-384
algorithms.
tcrypt benchmark results on Cortex-A8, sha512-generic vs sha512-neon-asm:
block-size bytes/update old-vs-new
16 16 2.99x
64 16 2.67x
64 64 3.00x
256 16 2.64x
256 64 3.06x
256 256 3.33x
1024 16 2.53x
1024 256 3.39x
1024 1024 3.52x
2048 16 2.50x
2048 256 3.41x
2048 1024 3.54x
2048 2048 3.57x
4096 16 2.49x
4096 256 3.42x
4096 1024 3.56x
4096 4096 3.59x
8192 16 2.48x
8192 256 3.42x
8192 1024 3.56x
8192 4096 3.60x
8192 8192 3.60x
Changes in v2:
- Use ENTRY/ENDPROC
- Don't provide Thumb2 version
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@xxxxxx>
---
arch/arm/crypto/Makefile | 2
arch/arm/crypto/sha512-armv7-neon.S | 455 +++++++++++++++++++++++++++++++++++
arch/arm/crypto/sha512_neon_glue.c | 305 +++++++++++++++++++++++
crypto/Kconfig | 15 +
4 files changed, 777 insertions(+)
create mode 100644 arch/arm/crypto/sha512-armv7-neon.S
create mode 100644 arch/arm/crypto/sha512_neon_glue.c
diff --git a/arch/arm/crypto/Makefile b/arch/arm/crypto/Makefile
index 374956d..b48fa34 100644
--- a/arch/arm/crypto/Makefile
+++ b/arch/arm/crypto/Makefile
@@ -6,11 +6,13 @@ obj-$(CONFIG_CRYPTO_AES_ARM) += aes-arm.o
obj-$(CONFIG_CRYPTO_AES_ARM_BS) += aes-arm-bs.o
obj-$(CONFIG_CRYPTO_SHA1_ARM) += sha1-arm.o
obj-$(CONFIG_CRYPTO_SHA1_ARM_NEON) += sha1-arm-neon.o
+obj-$(CONFIG_CRYPTO_SHA512_ARM_NEON) += sha512-arm-neon.o
aes-arm-y := aes-armv4.o aes_glue.o
aes-arm-bs-y := aesbs-core.o aesbs-glue.o
sha1-arm-y := sha1-armv4-large.o sha1_glue.o
sha1-arm-neon-y := sha1-armv7-neon.o sha1_neon_glue.o
+sha512-arm-neon-y := sha512-armv7-neon.o sha512_neon_glue.o
quiet_cmd_perl = PERL $@
cmd_perl = $(PERL) $(<) > $(@)
diff --git a/arch/arm/crypto/sha512-armv7-neon.S b/arch/arm/crypto/sha512-armv7-neon.S
new file mode 100644
index 0000000..fe99472
--- /dev/null
+++ b/arch/arm/crypto/sha512-armv7-neon.S
@@ -0,0 +1,455 @@
+/* sha512-armv7-neon.S - ARM/NEON assembly implementation of SHA-512 transform
+ *
+ * Copyright © 2013-2014 Jussi Kivilinna <jussi.kivilinna@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/linkage.h>
+
+
+.syntax unified
+.code 32
+.fpu neon
+
+.text
+
+/* structure of SHA512_CONTEXT */
+#define hd_a 0
+#define hd_b ((hd_a) + 8)
+#define hd_c ((hd_b) + 8)
+#define hd_d ((hd_c) + 8)
+#define hd_e ((hd_d) + 8)
+#define hd_f ((hd_e) + 8)
+#define hd_g ((hd_f) + 8)
+
+/* register macros */
+#define RK %r2
+
+#define RA d0
+#define RB d1
+#define RC d2
+#define RD d3
+#define RE d4
+#define RF d5
+#define RG d6
+#define RH d7
+
+#define RT0 d8
+#define RT1 d9
+#define RT2 d10
+#define RT3 d11
+#define RT4 d12
+#define RT5 d13
+#define RT6 d14
+#define RT7 d15
+
+#define RT01q q4
+#define RT23q q5
+#define RT45q q6
+#define RT67q q7
+
+#define RW0 d16
+#define RW1 d17
+#define RW2 d18
+#define RW3 d19
+#define RW4 d20
+#define RW5 d21
+#define RW6 d22
+#define RW7 d23
+#define RW8 d24
+#define RW9 d25
+#define RW10 d26
+#define RW11 d27
+#define RW12 d28
+#define RW13 d29
+#define RW14 d30
+#define RW15 d31
+
+#define RW01q q8
+#define RW23q q9
+#define RW45q q10
+#define RW67q q11
+#define RW89q q12
+#define RW1011q q13
+#define RW1213q q14
+#define RW1415q q15
+
+/***********************************************************************
+ * ARM assembly implementation of sha512 transform
+ ***********************************************************************/
+#define rounds2_0_63(ra, rb, rc, rd, re, rf, rg, rh, rw0, rw1, rw01q, rw2, \
+ rw23q, rw1415q, rw9, rw10, interleave_op, arg1) \
+ /* t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t]; */ \
+ vshr.u64 RT2, re, #14; \
+ vshl.u64 RT3, re, #64 - 14; \
+ interleave_op(arg1); \
+ vshr.u64 RT4, re, #18; \
+ vshl.u64 RT5, re, #64 - 18; \
+ vld1.64 {RT0}, [RK]!; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, re, #41; \
+ vshl.u64 RT5, re, #64 - 41; \
+ vadd.u64 RT0, RT0, rw0; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vmov.64 RT7, re; \
+ veor.64 RT1, RT2, RT3; \
+ vbsl.64 RT7, rf, rg; \
+ \
+ vadd.u64 RT1, RT1, rh; \
+ vshr.u64 RT2, ra, #28; \
+ vshl.u64 RT3, ra, #64 - 28; \
+ vadd.u64 RT1, RT1, RT0; \
+ vshr.u64 RT4, ra, #34; \
+ vshl.u64 RT5, ra, #64 - 34; \
+ vadd.u64 RT1, RT1, RT7; \
+ \
+ /* h = Sum0 (a) + Maj (a, b, c); */ \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, ra, #39; \
+ vshl.u64 RT5, ra, #64 - 39; \
+ veor.64 RT0, ra, rb; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vbsl.64 RT0, rc, rb; \
+ vadd.u64 rd, rd, RT1; /* d+=t1; */ \
+ veor.64 rh, RT2, RT3; \
+ \
+ /* t1 = g + Sum1 (d) + Ch (d, e, f) + k[t] + w[t]; */ \
+ vshr.u64 RT2, rd, #14; \
+ vshl.u64 RT3, rd, #64 - 14; \
+ vadd.u64 rh, rh, RT0; \
+ vshr.u64 RT4, rd, #18; \
+ vshl.u64 RT5, rd, #64 - 18; \
+ vadd.u64 rh, rh, RT1; /* h+=t1; */ \
+ vld1.64 {RT0}, [RK]!; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, rd, #41; \
+ vshl.u64 RT5, rd, #64 - 41; \
+ vadd.u64 RT0, RT0, rw1; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vmov.64 RT7, rd; \
+ veor.64 RT1, RT2, RT3; \
+ vbsl.64 RT7, re, rf; \
+ \
+ vadd.u64 RT1, RT1, rg; \
+ vshr.u64 RT2, rh, #28; \
+ vshl.u64 RT3, rh, #64 - 28; \
+ vadd.u64 RT1, RT1, RT0; \
+ vshr.u64 RT4, rh, #34; \
+ vshl.u64 RT5, rh, #64 - 34; \
+ vadd.u64 RT1, RT1, RT7; \
+ \
+ /* g = Sum0 (h) + Maj (h, a, b); */ \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, rh, #39; \
+ vshl.u64 RT5, rh, #64 - 39; \
+ veor.64 RT0, rh, ra; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vbsl.64 RT0, rb, ra; \
+ vadd.u64 rc, rc, RT1; /* c+=t1; */ \
+ veor.64 rg, RT2, RT3; \
+ \
+ /* w[0] += S1 (w[14]) + w[9] + S0 (w[1]); */ \
+ /* w[1] += S1 (w[15]) + w[10] + S0 (w[2]); */ \
+ \
+ /**** S0(w[1:2]) */ \
+ \
+ /* w[0:1] += w[9:10] */ \
+ /* RT23q = rw1:rw2 */ \
+ vext.u64 RT23q, rw01q, rw23q, #1; \
+ vadd.u64 rw0, rw9; \
+ vadd.u64 rg, rg, RT0; \
+ vadd.u64 rw1, rw10;\
+ vadd.u64 rg, rg, RT1; /* g+=t1; */ \
+ \
+ vshr.u64 RT45q, RT23q, #1; \
+ vshl.u64 RT67q, RT23q, #64 - 1; \
+ vshr.u64 RT01q, RT23q, #8; \
+ veor.u64 RT45q, RT45q, RT67q; \
+ vshl.u64 RT67q, RT23q, #64 - 8; \
+ veor.u64 RT45q, RT45q, RT01q; \
+ vshr.u64 RT01q, RT23q, #7; \
+ veor.u64 RT45q, RT45q, RT67q; \
+ \
+ /**** S1(w[14:15]) */ \
+ vshr.u64 RT23q, rw1415q, #6; \
+ veor.u64 RT01q, RT01q, RT45q; \
+ vshr.u64 RT45q, rw1415q, #19; \
+ vshl.u64 RT67q, rw1415q, #64 - 19; \
+ veor.u64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT45q, rw1415q, #61; \
+ veor.u64 RT23q, RT23q, RT67q; \
+ vshl.u64 RT67q, rw1415q, #64 - 61; \
+ veor.u64 RT23q, RT23q, RT45q; \
+ vadd.u64 rw01q, RT01q; /* w[0:1] += S(w[1:2]) */ \
+ veor.u64 RT01q, RT23q, RT67q;
+#define vadd_RT01q(rw01q) \
+ /* w[0:1] += S(w[14:15]) */ \
+ vadd.u64 rw01q, RT01q;
+
+#define dummy(_) /*_*/
+
+#define rounds2_64_79(ra, rb, rc, rd, re, rf, rg, rh, rw0, rw1, \
+ interleave_op1, arg1, interleave_op2, arg2) \
+ /* t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t]; */ \
+ vshr.u64 RT2, re, #14; \
+ vshl.u64 RT3, re, #64 - 14; \
+ interleave_op1(arg1); \
+ vshr.u64 RT4, re, #18; \
+ vshl.u64 RT5, re, #64 - 18; \
+ interleave_op2(arg2); \
+ vld1.64 {RT0}, [RK]!; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, re, #41; \
+ vshl.u64 RT5, re, #64 - 41; \
+ vadd.u64 RT0, RT0, rw0; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vmov.64 RT7, re; \
+ veor.64 RT1, RT2, RT3; \
+ vbsl.64 RT7, rf, rg; \
+ \
+ vadd.u64 RT1, RT1, rh; \
+ vshr.u64 RT2, ra, #28; \
+ vshl.u64 RT3, ra, #64 - 28; \
+ vadd.u64 RT1, RT1, RT0; \
+ vshr.u64 RT4, ra, #34; \
+ vshl.u64 RT5, ra, #64 - 34; \
+ vadd.u64 RT1, RT1, RT7; \
+ \
+ /* h = Sum0 (a) + Maj (a, b, c); */ \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, ra, #39; \
+ vshl.u64 RT5, ra, #64 - 39; \
+ veor.64 RT0, ra, rb; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vbsl.64 RT0, rc, rb; \
+ vadd.u64 rd, rd, RT1; /* d+=t1; */ \
+ veor.64 rh, RT2, RT3; \
+ \
+ /* t1 = g + Sum1 (d) + Ch (d, e, f) + k[t] + w[t]; */ \
+ vshr.u64 RT2, rd, #14; \
+ vshl.u64 RT3, rd, #64 - 14; \
+ vadd.u64 rh, rh, RT0; \
+ vshr.u64 RT4, rd, #18; \
+ vshl.u64 RT5, rd, #64 - 18; \
+ vadd.u64 rh, rh, RT1; /* h+=t1; */ \
+ vld1.64 {RT0}, [RK]!; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, rd, #41; \
+ vshl.u64 RT5, rd, #64 - 41; \
+ vadd.u64 RT0, RT0, rw1; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vmov.64 RT7, rd; \
+ veor.64 RT1, RT2, RT3; \
+ vbsl.64 RT7, re, rf; \
+ \
+ vadd.u64 RT1, RT1, rg; \
+ vshr.u64 RT2, rh, #28; \
+ vshl.u64 RT3, rh, #64 - 28; \
+ vadd.u64 RT1, RT1, RT0; \
+ vshr.u64 RT4, rh, #34; \
+ vshl.u64 RT5, rh, #64 - 34; \
+ vadd.u64 RT1, RT1, RT7; \
+ \
+ /* g = Sum0 (h) + Maj (h, a, b); */ \
+ veor.64 RT23q, RT23q, RT45q; \
+ vshr.u64 RT4, rh, #39; \
+ vshl.u64 RT5, rh, #64 - 39; \
+ veor.64 RT0, rh, ra; \
+ veor.64 RT23q, RT23q, RT45q; \
+ vbsl.64 RT0, rb, ra; \
+ vadd.u64 rc, rc, RT1; /* c+=t1; */ \
+ veor.64 rg, RT2, RT3;
+#define vadd_rg_RT0(rg) \
+ vadd.u64 rg, rg, RT0;
+#define vadd_rg_RT1(rg) \
+ vadd.u64 rg, rg, RT1; /* g+=t1; */
+
+.align 3
+ENTRY(sha512_transform_neon)
+ /* Input:
+ * %r0: SHA512_CONTEXT
+ * %r1: data
+ * %r2: u64 k[] constants
+ * %r3: nblks
+ */
+ push {%lr};
+
+ mov %lr, #0;
+
+ /* Load context to d0-d7 */
+ vld1.64 {RA-RD}, [%r0]!;
+ vld1.64 {RE-RH}, [%r0];
+ sub %r0, #(4*8);
+
+ /* Load input to w[16], d16-d31 */
+ /* NOTE: Assumes that on ARMv7 unaligned accesses are always allowed. */
+ vld1.64 {RW0-RW3}, [%r1]!;
+ vld1.64 {RW4-RW7}, [%r1]!;
+ vld1.64 {RW8-RW11}, [%r1]!;
+ vld1.64 {RW12-RW15}, [%r1]!;
+#ifdef __ARMEL__
+ /* byteswap */
+ vrev64.8 RW01q, RW01q;
+ vrev64.8 RW23q, RW23q;
+ vrev64.8 RW45q, RW45q;
+ vrev64.8 RW67q, RW67q;
+ vrev64.8 RW89q, RW89q;
+ vrev64.8 RW1011q, RW1011q;
+ vrev64.8 RW1213q, RW1213q;
+ vrev64.8 RW1415q, RW1415q;
+#endif
+
+ /* EABI says that d8-d15 must be preserved by callee. */
+ /*vpush {RT0-RT7};*/
+
+.Loop:
+ rounds2_0_63(RA, RB, RC, RD, RE, RF, RG, RH, RW0, RW1, RW01q, RW2,
+ RW23q, RW1415q, RW9, RW10, dummy, _);
+ b .Lenter_rounds;
+
+.Loop_rounds:
+ rounds2_0_63(RA, RB, RC, RD, RE, RF, RG, RH, RW0, RW1, RW01q, RW2,
+ RW23q, RW1415q, RW9, RW10, vadd_RT01q, RW1415q);
+.Lenter_rounds:
+ rounds2_0_63(RG, RH, RA, RB, RC, RD, RE, RF, RW2, RW3, RW23q, RW4,
+ RW45q, RW01q, RW11, RW12, vadd_RT01q, RW01q);
+ rounds2_0_63(RE, RF, RG, RH, RA, RB, RC, RD, RW4, RW5, RW45q, RW6,
+ RW67q, RW23q, RW13, RW14, vadd_RT01q, RW23q);
+ rounds2_0_63(RC, RD, RE, RF, RG, RH, RA, RB, RW6, RW7, RW67q, RW8,
+ RW89q, RW45q, RW15, RW0, vadd_RT01q, RW45q);
+ rounds2_0_63(RA, RB, RC, RD, RE, RF, RG, RH, RW8, RW9, RW89q, RW10,
+ RW1011q, RW67q, RW1, RW2, vadd_RT01q, RW67q);
+ rounds2_0_63(RG, RH, RA, RB, RC, RD, RE, RF, RW10, RW11, RW1011q, RW12,
+ RW1213q, RW89q, RW3, RW4, vadd_RT01q, RW89q);
+ add %lr, #16;
+ rounds2_0_63(RE, RF, RG, RH, RA, RB, RC, RD, RW12, RW13, RW1213q, RW14,
+ RW1415q, RW1011q, RW5, RW6, vadd_RT01q, RW1011q);
+ cmp %lr, #64;
+ rounds2_0_63(RC, RD, RE, RF, RG, RH, RA, RB, RW14, RW15, RW1415q, RW0,
+ RW01q, RW1213q, RW7, RW8, vadd_RT01q, RW1213q);
+ bne .Loop_rounds;
+
+ subs %r3, #1;
+
+ rounds2_64_79(RA, RB, RC, RD, RE, RF, RG, RH, RW0, RW1,
+ vadd_RT01q, RW1415q, dummy, _);
+ rounds2_64_79(RG, RH, RA, RB, RC, RD, RE, RF, RW2, RW3,
+ vadd_rg_RT0, RG, vadd_rg_RT1, RG);
+ beq .Lhandle_tail;
+ vld1.64 {RW0-RW3}, [%r1]!;
+ rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW4, RW5,
+ vadd_rg_RT0, RE, vadd_rg_RT1, RE);
+ rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW6, RW7,
+ vadd_rg_RT0, RC, vadd_rg_RT1, RC);
+#ifdef __ARMEL__
+ vrev64.8 RW01q, RW01q;
+ vrev64.8 RW23q, RW23q;
+#endif
+ vld1.64 {RW4-RW7}, [%r1]!;
+ rounds2_64_79(RA, RB, RC, RD, RE, RF, RG, RH, RW8, RW9,
+ vadd_rg_RT0, RA, vadd_rg_RT1, RA);
+ rounds2_64_79(RG, RH, RA, RB, RC, RD, RE, RF, RW10, RW11,
+ vadd_rg_RT0, RG, vadd_rg_RT1, RG);
+#ifdef __ARMEL__
+ vrev64.8 RW45q, RW45q;
+ vrev64.8 RW67q, RW67q;
+#endif
+ vld1.64 {RW8-RW11}, [%r1]!;
+ rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW12, RW13,
+ vadd_rg_RT0, RE, vadd_rg_RT1, RE);
+ rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW14, RW15,
+ vadd_rg_RT0, RC, vadd_rg_RT1, RC);
+#ifdef __ARMEL__
+ vrev64.8 RW89q, RW89q;
+ vrev64.8 RW1011q, RW1011q;
+#endif
+ vld1.64 {RW12-RW15}, [%r1]!;
+ vadd_rg_RT0(RA);
+ vadd_rg_RT1(RA);
+
+ /* Load context */
+ vld1.64 {RT0-RT3}, [%r0]!;
+ vld1.64 {RT4-RT7}, [%r0];
+ sub %r0, #(4*8);
+
+#ifdef __ARMEL__
+ vrev64.8 RW1213q, RW1213q;
+ vrev64.8 RW1415q, RW1415q;
+#endif
+
+ vadd.u64 RA, RT0;
+ vadd.u64 RB, RT1;
+ vadd.u64 RC, RT2;
+ vadd.u64 RD, RT3;
+ vadd.u64 RE, RT4;
+ vadd.u64 RF, RT5;
+ vadd.u64 RG, RT6;
+ vadd.u64 RH, RT7;
+
+ /* Store the first half of context */
+ vst1.64 {RA-RD}, [%r0]!;
+ sub RK, $(8*80);
+ vst1.64 {RE-RH}, [%r0]; /* Store the last half of context */
+ mov %lr, #0;
+ sub %r0, #(4*8);
+
+ b .Loop;
+
+.Lhandle_tail:
+ rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW4, RW5,
+ vadd_rg_RT0, RE, vadd_rg_RT1, RE);
+ rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW6, RW7,
+ vadd_rg_RT0, RC, vadd_rg_RT1, RC);
+ rounds2_64_79(RA, RB, RC, RD, RE, RF, RG, RH, RW8, RW9,
+ vadd_rg_RT0, RA, vadd_rg_RT1, RA);
+ rounds2_64_79(RG, RH, RA, RB, RC, RD, RE, RF, RW10, RW11,
+ vadd_rg_RT0, RG, vadd_rg_RT1, RG);
+ rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW12, RW13,
+ vadd_rg_RT0, RE, vadd_rg_RT1, RE);
+ rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW14, RW15,
+ vadd_rg_RT0, RC, vadd_rg_RT1, RC);
+
+ /* Load context to d16-d23 */
+ vld1.64 {RW0-RW3}, [%r0]!;
+ vadd_rg_RT0(RA);
+ vld1.64 {RW4-RW7}, [%r0];
+ vadd_rg_RT1(RA);
+ sub %r0, #(4*8);
+
+ vadd.u64 RA, RW0;
+ vadd.u64 RB, RW1;
+ vadd.u64 RC, RW2;
+ vadd.u64 RD, RW3;
+ vadd.u64 RE, RW4;
+ vadd.u64 RF, RW5;
+ vadd.u64 RG, RW6;
+ vadd.u64 RH, RW7;
+
+ /* Store the first half of context */
+ vst1.64 {RA-RD}, [%r0]!;
+
+ /* Clear used registers */
+ /* d16-d31 */
+ veor.u64 RW01q, RW01q;
+ veor.u64 RW23q, RW23q;
+ veor.u64 RW45q, RW45q;
+ veor.u64 RW67q, RW67q;
+ vst1.64 {RE-RH}, [%r0]; /* Store the last half of context */
+ veor.u64 RW89q, RW89q;
+ veor.u64 RW1011q, RW1011q;
+ veor.u64 RW1213q, RW1213q;
+ veor.u64 RW1415q, RW1415q;
+ /* d8-d15 */
+ /*vpop {RT0-RT7};*/
+ /* d0-d7 (q0-q3) */
+ veor.u64 %q0, %q0;
+ veor.u64 %q1, %q1;
+ veor.u64 %q2, %q2;
+ veor.u64 %q3, %q3;
+
+ pop {%pc};
+ENDPROC(sha512_transform_neon)
diff --git a/arch/arm/crypto/sha512_neon_glue.c b/arch/arm/crypto/sha512_neon_glue.c
new file mode 100644
index 0000000..0d2758f
--- /dev/null
+++ b/arch/arm/crypto/sha512_neon_glue.c
@@ -0,0 +1,305 @@
+/*
+ * Glue code for the SHA512 Secure Hash Algorithm assembly implementation
+ * using NEON instructions.
+ *
+ * Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@xxxxxx>
+ *
+ * This file is based on sha512_ssse3_glue.c:
+ * Copyright (C) 2013 Intel Corporation
+ * Author: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+
+#include <crypto/internal/hash.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/cryptohash.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <crypto/sha.h>
+#include <asm/byteorder.h>
+#include <asm/simd.h>
+#include <asm/neon.h>
+
+
+static const u64 sha512_k[] = {
+ 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
+ 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
+ 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+ 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
+ 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
+ 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+ 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
+ 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
+ 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+ 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
+ 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
+ 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+ 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
+ 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
+ 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+ 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
+ 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
+ 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+ 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
+ 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
+ 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+ 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
+ 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
+ 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+ 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
+ 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
+ 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+ 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
+ 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
+ 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+ 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
+ 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
+ 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+ 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
+ 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
+ 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+ 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
+ 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
+ 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+ 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
+};
+
+
+asmlinkage void sha512_transform_neon(u64 *digest, const void *data,
+ const u64 k[], unsigned int num_blks);
+
+
+static int sha512_neon_init(struct shash_desc *desc)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+
+ sctx->state[0] = SHA512_H0;
+ sctx->state[1] = SHA512_H1;
+ sctx->state[2] = SHA512_H2;
+ sctx->state[3] = SHA512_H3;
+ sctx->state[4] = SHA512_H4;
+ sctx->state[5] = SHA512_H5;
+ sctx->state[6] = SHA512_H6;
+ sctx->state[7] = SHA512_H7;
+ sctx->count[0] = sctx->count[1] = 0;
+
+ return 0;
+}
+
+static int __sha512_neon_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len, unsigned int partial)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+ unsigned int done = 0;
+
+ sctx->count[0] += len;
+ if (sctx->count[0] < len)
+ sctx->count[1]++;
+
+ if (partial) {
+ done = SHA512_BLOCK_SIZE - partial;
+ memcpy(sctx->buf + partial, data, done);
+ sha512_transform_neon(sctx->state, sctx->buf, sha512_k, 1);
+ }
+
+ if (len - done >= SHA512_BLOCK_SIZE) {
+ const unsigned int rounds = (len - done) / SHA512_BLOCK_SIZE;
+
+ sha512_transform_neon(sctx->state, data + done, sha512_k,
+ rounds);
+
+ done += rounds * SHA512_BLOCK_SIZE;
+ }
+
+ memcpy(sctx->buf, data + done, len - done);
+
+ return 0;
+}
+
+static int sha512_neon_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+ unsigned int partial = sctx->count[0] % SHA512_BLOCK_SIZE;
+ int res;
+
+ /* Handle the fast case right here */
+ if (partial + len < SHA512_BLOCK_SIZE) {
+ sctx->count[0] += len;
+ if (sctx->count[0] < len)
+ sctx->count[1]++;
+ memcpy(sctx->buf + partial, data, len);
+
+ return 0;
+ }
+
+ if (!may_use_simd()) {
+ res = crypto_sha512_update(desc, data, len);
+ } else {
+ kernel_neon_begin();
+ res = __sha512_neon_update(desc, data, len, partial);
+ kernel_neon_end();
+ }
+
+ return res;
+}
+
+
+/* Add padding and return the message digest. */
+static int sha512_neon_final(struct shash_desc *desc, u8 *out)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+ unsigned int i, index, padlen;
+ __be64 *dst = (__be64 *)out;
+ __be64 bits[2];
+ static const u8 padding[SHA512_BLOCK_SIZE] = { 0x80, };
+
+ /* save number of bits */
+ bits[1] = cpu_to_be64(sctx->count[0] << 3);
+ bits[0] = cpu_to_be64(sctx->count[1] << 3 | sctx->count[0] >> 61);
+
+ /* Pad out to 112 mod 128 and append length */
+ index = sctx->count[0] & 0x7f;
+ padlen = (index < 112) ? (112 - index) : ((128+112) - index);
+
+ if (!may_use_simd()) {
+ crypto_sha512_update(desc, padding, padlen);
+ crypto_sha512_update(desc, (const u8 *)&bits, sizeof(bits));
+ } else {
+ kernel_neon_begin();
+ /* We need to fill a whole block for __sha512_neon_update() */
+ if (padlen <= 112) {
+ sctx->count[0] += padlen;
+ if (sctx->count[0] < padlen)
+ sctx->count[1]++;
+ memcpy(sctx->buf + index, padding, padlen);
+ } else {
+ __sha512_neon_update(desc, padding, padlen, index);
+ }
+ __sha512_neon_update(desc, (const u8 *)&bits,
+ sizeof(bits), 112);
+ kernel_neon_end();
+ }
+
+ /* Store state in digest */
+ for (i = 0; i < 8; i++)
+ dst[i] = cpu_to_be64(sctx->state[i]);
+
+ /* Wipe context */
+ memset(sctx, 0, sizeof(*sctx));
+
+ return 0;
+}
+
+static int sha512_neon_export(struct shash_desc *desc, void *out)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+
+ memcpy(out, sctx, sizeof(*sctx));
+
+ return 0;
+}
+
+static int sha512_neon_import(struct shash_desc *desc, const void *in)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+
+ memcpy(sctx, in, sizeof(*sctx));
+
+ return 0;
+}
+
+static int sha384_neon_init(struct shash_desc *desc)
+{
+ struct sha512_state *sctx = shash_desc_ctx(desc);
+
+ sctx->state[0] = SHA384_H0;
+ sctx->state[1] = SHA384_H1;
+ sctx->state[2] = SHA384_H2;
+ sctx->state[3] = SHA384_H3;
+ sctx->state[4] = SHA384_H4;
+ sctx->state[5] = SHA384_H5;
+ sctx->state[6] = SHA384_H6;
+ sctx->state[7] = SHA384_H7;
+
+ sctx->count[0] = sctx->count[1] = 0;
+
+ return 0;
+}
+
+static int sha384_neon_final(struct shash_desc *desc, u8 *hash)
+{
+ u8 D[SHA512_DIGEST_SIZE];
+
+ sha512_neon_final(desc, D);
+
+ memcpy(hash, D, SHA384_DIGEST_SIZE);
+ memset(D, 0, SHA512_DIGEST_SIZE);
+
+ return 0;
+}
+
+static struct shash_alg algs[] = { {
+ .digestsize = SHA512_DIGEST_SIZE,
+ .init = sha512_neon_init,
+ .update = sha512_neon_update,
+ .final = sha512_neon_final,
+ .export = sha512_neon_export,
+ .import = sha512_neon_import,
+ .descsize = sizeof(struct sha512_state),
+ .statesize = sizeof(struct sha512_state),
+ .base = {
+ .cra_name = "sha512",
+ .cra_driver_name = "sha512-neon",
+ .cra_priority = 250,
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+}, {
+ .digestsize = SHA384_DIGEST_SIZE,
+ .init = sha384_neon_init,
+ .update = sha512_neon_update,
+ .final = sha384_neon_final,
+ .export = sha512_neon_export,
+ .import = sha512_neon_import,
+ .descsize = sizeof(struct sha512_state),
+ .statesize = sizeof(struct sha512_state),
+ .base = {
+ .cra_name = "sha384",
+ .cra_driver_name = "sha384-neon",
+ .cra_priority = 250,
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+} };
+
+static int __init sha512_neon_mod_init(void)
+{
+ if (!cpu_has_neon())
+ return -ENODEV;
+
+ return crypto_register_shashes(algs, ARRAY_SIZE(algs));
+}
+
+static void __exit sha512_neon_mod_fini(void)
+{
+ crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
+}
+
+module_init(sha512_neon_mod_init);
+module_exit(sha512_neon_mod_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SHA512 Secure Hash Algorithm, NEON accelerated");
+
+MODULE_ALIAS("sha512");
+MODULE_ALIAS("sha384");
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 66d7ce1..9ec69e2 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -600,6 +600,21 @@ config CRYPTO_SHA512_SPARC64
SHA-512 secure hash standard (DFIPS 180-2) implemented
using sparc64 crypto instructions, when available.
+config CRYPTO_SHA512_ARM_NEON
+ tristate "SHA384 and SHA512 digest algorithm (ARM NEON)"
+ depends on ARM && KERNEL_MODE_NEON && !CPU_BIG_ENDIAN
+ select CRYPTO_SHA512
+ select CRYPTO_HASH
+ help
+ SHA-512 secure hash standard (DFIPS 180-2) implemented
+ using ARM NEON instructions, when available.
+
+ This version of SHA implements a 512 bit hash with 256 bits of
+ security against collision attacks.
+
+ This code also includes SHA-384, a 384 bit hash with 192 bits
+ of security against collision attacks.
+
config CRYPTO_TGR192
tristate "Tiger digest algorithms"
select CRYPTO_HASH
--
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