summary refs log tree commit diff
path: root/lib/crypto
diff options
context:
space:
mode:
Diffstat (limited to 'lib/crypto')
-rw-r--r--lib/crypto/Makefile4
-rw-r--r--lib/crypto/poly1305-donna32.c204
-rw-r--r--lib/crypto/poly1305-donna64.c185
-rw-r--r--lib/crypto/poly1305.c169
4 files changed, 399 insertions, 163 deletions
diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile
index f97f9b941110..6ecaf83a5a9a 100644
--- a/lib/crypto/Makefile
+++ b/lib/crypto/Makefile
@@ -28,7 +28,9 @@ obj-$(CONFIG_CRYPTO_LIB_DES)			+= libdes.o
 libdes-y					:= des.o
 
 obj-$(CONFIG_CRYPTO_LIB_POLY1305_GENERIC)	+= libpoly1305.o
-libpoly1305-y					:= poly1305.o
+libpoly1305-y					:= poly1305-donna32.o
+libpoly1305-$(CONFIG_ARCH_SUPPORTS_INT128)	:= poly1305-donna64.o
+libpoly1305-y					+= poly1305.o
 
 obj-$(CONFIG_CRYPTO_LIB_SHA256)			+= libsha256.o
 libsha256-y					:= sha256.o
diff --git a/lib/crypto/poly1305-donna32.c b/lib/crypto/poly1305-donna32.c
new file mode 100644
index 000000000000..3cc77d94390b
--- /dev/null
+++ b/lib/crypto/poly1305-donna32.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ *
+ * This is based in part on Andrew Moon's poly1305-donna, which is in the
+ * public domain.
+ */
+
+#include <linux/kernel.h>
+#include <asm/unaligned.h>
+#include <crypto/internal/poly1305.h>
+
+void poly1305_core_setkey(struct poly1305_core_key *key, const u8 raw_key[16])
+{
+	/* r &= 0xffffffc0ffffffc0ffffffc0fffffff */
+	key->key.r[0] = (get_unaligned_le32(&raw_key[0])) & 0x3ffffff;
+	key->key.r[1] = (get_unaligned_le32(&raw_key[3]) >> 2) & 0x3ffff03;
+	key->key.r[2] = (get_unaligned_le32(&raw_key[6]) >> 4) & 0x3ffc0ff;
+	key->key.r[3] = (get_unaligned_le32(&raw_key[9]) >> 6) & 0x3f03fff;
+	key->key.r[4] = (get_unaligned_le32(&raw_key[12]) >> 8) & 0x00fffff;
+
+	/* s = 5*r */
+	key->precomputed_s.r[0] = key->key.r[1] * 5;
+	key->precomputed_s.r[1] = key->key.r[2] * 5;
+	key->precomputed_s.r[2] = key->key.r[3] * 5;
+	key->precomputed_s.r[3] = key->key.r[4] * 5;
+}
+EXPORT_SYMBOL(poly1305_core_setkey);
+
+void poly1305_core_blocks(struct poly1305_state *state,
+			  const struct poly1305_core_key *key, const void *src,
+			  unsigned int nblocks, u32 hibit)
+{
+	const u8 *input = src;
+	u32 r0, r1, r2, r3, r4;
+	u32 s1, s2, s3, s4;
+	u32 h0, h1, h2, h3, h4;
+	u64 d0, d1, d2, d3, d4;
+	u32 c;
+
+	if (!nblocks)
+		return;
+
+	hibit <<= 24;
+
+	r0 = key->key.r[0];
+	r1 = key->key.r[1];
+	r2 = key->key.r[2];
+	r3 = key->key.r[3];
+	r4 = key->key.r[4];
+
+	s1 = key->precomputed_s.r[0];
+	s2 = key->precomputed_s.r[1];
+	s3 = key->precomputed_s.r[2];
+	s4 = key->precomputed_s.r[3];
+
+	h0 = state->h[0];
+	h1 = state->h[1];
+	h2 = state->h[2];
+	h3 = state->h[3];
+	h4 = state->h[4];
+
+	do {
+		/* h += m[i] */
+		h0 += (get_unaligned_le32(&input[0])) & 0x3ffffff;
+		h1 += (get_unaligned_le32(&input[3]) >> 2) & 0x3ffffff;
+		h2 += (get_unaligned_le32(&input[6]) >> 4) & 0x3ffffff;
+		h3 += (get_unaligned_le32(&input[9]) >> 6) & 0x3ffffff;
+		h4 += (get_unaligned_le32(&input[12]) >> 8) | hibit;
+
+		/* h *= r */
+		d0 = ((u64)h0 * r0) + ((u64)h1 * s4) +
+		     ((u64)h2 * s3) + ((u64)h3 * s2) +
+		     ((u64)h4 * s1);
+		d1 = ((u64)h0 * r1) + ((u64)h1 * r0) +
+		     ((u64)h2 * s4) + ((u64)h3 * s3) +
+		     ((u64)h4 * s2);
+		d2 = ((u64)h0 * r2) + ((u64)h1 * r1) +
+		     ((u64)h2 * r0) + ((u64)h3 * s4) +
+		     ((u64)h4 * s3);
+		d3 = ((u64)h0 * r3) + ((u64)h1 * r2) +
+		     ((u64)h2 * r1) + ((u64)h3 * r0) +
+		     ((u64)h4 * s4);
+		d4 = ((u64)h0 * r4) + ((u64)h1 * r3) +
+		     ((u64)h2 * r2) + ((u64)h3 * r1) +
+		     ((u64)h4 * r0);
+
+		/* (partial) h %= p */
+		c = (u32)(d0 >> 26);
+		h0 = (u32)d0 & 0x3ffffff;
+		d1 += c;
+		c = (u32)(d1 >> 26);
+		h1 = (u32)d1 & 0x3ffffff;
+		d2 += c;
+		c = (u32)(d2 >> 26);
+		h2 = (u32)d2 & 0x3ffffff;
+		d3 += c;
+		c = (u32)(d3 >> 26);
+		h3 = (u32)d3 & 0x3ffffff;
+		d4 += c;
+		c = (u32)(d4 >> 26);
+		h4 = (u32)d4 & 0x3ffffff;
+		h0 += c * 5;
+		c = (h0 >> 26);
+		h0 = h0 & 0x3ffffff;
+		h1 += c;
+
+		input += POLY1305_BLOCK_SIZE;
+	} while (--nblocks);
+
+	state->h[0] = h0;
+	state->h[1] = h1;
+	state->h[2] = h2;
+	state->h[3] = h3;
+	state->h[4] = h4;
+}
+EXPORT_SYMBOL(poly1305_core_blocks);
+
+void poly1305_core_emit(const struct poly1305_state *state, const u32 nonce[4],
+			void *dst)
+{
+	u8 *mac = dst;
+	u32 h0, h1, h2, h3, h4, c;
+	u32 g0, g1, g2, g3, g4;
+	u64 f;
+	u32 mask;
+
+	/* fully carry h */
+	h0 = state->h[0];
+	h1 = state->h[1];
+	h2 = state->h[2];
+	h3 = state->h[3];
+	h4 = state->h[4];
+
+	c = h1 >> 26;
+	h1 = h1 & 0x3ffffff;
+	h2 += c;
+	c = h2 >> 26;
+	h2 = h2 & 0x3ffffff;
+	h3 += c;
+	c = h3 >> 26;
+	h3 = h3 & 0x3ffffff;
+	h4 += c;
+	c = h4 >> 26;
+	h4 = h4 & 0x3ffffff;
+	h0 += c * 5;
+	c = h0 >> 26;
+	h0 = h0 & 0x3ffffff;
+	h1 += c;
+
+	/* compute h + -p */
+	g0 = h0 + 5;
+	c = g0 >> 26;
+	g0 &= 0x3ffffff;
+	g1 = h1 + c;
+	c = g1 >> 26;
+	g1 &= 0x3ffffff;
+	g2 = h2 + c;
+	c = g2 >> 26;
+	g2 &= 0x3ffffff;
+	g3 = h3 + c;
+	c = g3 >> 26;
+	g3 &= 0x3ffffff;
+	g4 = h4 + c - (1UL << 26);
+
+	/* select h if h < p, or h + -p if h >= p */
+	mask = (g4 >> ((sizeof(u32) * 8) - 1)) - 1;
+	g0 &= mask;
+	g1 &= mask;
+	g2 &= mask;
+	g3 &= mask;
+	g4 &= mask;
+	mask = ~mask;
+
+	h0 = (h0 & mask) | g0;
+	h1 = (h1 & mask) | g1;
+	h2 = (h2 & mask) | g2;
+	h3 = (h3 & mask) | g3;
+	h4 = (h4 & mask) | g4;
+
+	/* h = h % (2^128) */
+	h0 = ((h0) | (h1 << 26)) & 0xffffffff;
+	h1 = ((h1 >> 6) | (h2 << 20)) & 0xffffffff;
+	h2 = ((h2 >> 12) | (h3 << 14)) & 0xffffffff;
+	h3 = ((h3 >> 18) | (h4 << 8)) & 0xffffffff;
+
+	if (likely(nonce)) {
+		/* mac = (h + nonce) % (2^128) */
+		f = (u64)h0 + nonce[0];
+		h0 = (u32)f;
+		f = (u64)h1 + nonce[1] + (f >> 32);
+		h1 = (u32)f;
+		f = (u64)h2 + nonce[2] + (f >> 32);
+		h2 = (u32)f;
+		f = (u64)h3 + nonce[3] + (f >> 32);
+		h3 = (u32)f;
+	}
+
+	put_unaligned_le32(h0, &mac[0]);
+	put_unaligned_le32(h1, &mac[4]);
+	put_unaligned_le32(h2, &mac[8]);
+	put_unaligned_le32(h3, &mac[12]);
+}
+EXPORT_SYMBOL(poly1305_core_emit);
diff --git a/lib/crypto/poly1305-donna64.c b/lib/crypto/poly1305-donna64.c
new file mode 100644
index 000000000000..6ae181bb4345
--- /dev/null
+++ b/lib/crypto/poly1305-donna64.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ *
+ * This is based in part on Andrew Moon's poly1305-donna, which is in the
+ * public domain.
+ */
+
+#include <linux/kernel.h>
+#include <asm/unaligned.h>
+#include <crypto/internal/poly1305.h>
+
+typedef __uint128_t u128;
+
+void poly1305_core_setkey(struct poly1305_core_key *key, const u8 raw_key[16])
+{
+	u64 t0, t1;
+
+	/* r &= 0xffffffc0ffffffc0ffffffc0fffffff */
+	t0 = get_unaligned_le64(&raw_key[0]);
+	t1 = get_unaligned_le64(&raw_key[8]);
+
+	key->key.r64[0] = t0 & 0xffc0fffffffULL;
+	key->key.r64[1] = ((t0 >> 44) | (t1 << 20)) & 0xfffffc0ffffULL;
+	key->key.r64[2] = ((t1 >> 24)) & 0x00ffffffc0fULL;
+
+	/* s = 20*r */
+	key->precomputed_s.r64[0] = key->key.r64[1] * 20;
+	key->precomputed_s.r64[1] = key->key.r64[2] * 20;
+}
+EXPORT_SYMBOL(poly1305_core_setkey);
+
+void poly1305_core_blocks(struct poly1305_state *state,
+			  const struct poly1305_core_key *key, const void *src,
+			  unsigned int nblocks, u32 hibit)
+{
+	const u8 *input = src;
+	u64 hibit64;
+	u64 r0, r1, r2;
+	u64 s1, s2;
+	u64 h0, h1, h2;
+	u64 c;
+	u128 d0, d1, d2, d;
+
+	if (!nblocks)
+		return;
+
+	hibit64 = ((u64)hibit) << 40;
+
+	r0 = key->key.r64[0];
+	r1 = key->key.r64[1];
+	r2 = key->key.r64[2];
+
+	h0 = state->h64[0];
+	h1 = state->h64[1];
+	h2 = state->h64[2];
+
+	s1 = key->precomputed_s.r64[0];
+	s2 = key->precomputed_s.r64[1];
+
+	do {
+		u64 t0, t1;
+
+		/* h += m[i] */
+		t0 = get_unaligned_le64(&input[0]);
+		t1 = get_unaligned_le64(&input[8]);
+
+		h0 += t0 & 0xfffffffffffULL;
+		h1 += ((t0 >> 44) | (t1 << 20)) & 0xfffffffffffULL;
+		h2 += (((t1 >> 24)) & 0x3ffffffffffULL) | hibit64;
+
+		/* h *= r */
+		d0 = (u128)h0 * r0;
+		d = (u128)h1 * s2;
+		d0 += d;
+		d = (u128)h2 * s1;
+		d0 += d;
+		d1 = (u128)h0 * r1;
+		d = (u128)h1 * r0;
+		d1 += d;
+		d = (u128)h2 * s2;
+		d1 += d;
+		d2 = (u128)h0 * r2;
+		d = (u128)h1 * r1;
+		d2 += d;
+		d = (u128)h2 * r0;
+		d2 += d;
+
+		/* (partial) h %= p */
+		c = (u64)(d0 >> 44);
+		h0 = (u64)d0 & 0xfffffffffffULL;
+		d1 += c;
+		c = (u64)(d1 >> 44);
+		h1 = (u64)d1 & 0xfffffffffffULL;
+		d2 += c;
+		c = (u64)(d2 >> 42);
+		h2 = (u64)d2 & 0x3ffffffffffULL;
+		h0 += c * 5;
+		c = h0 >> 44;
+		h0 = h0 & 0xfffffffffffULL;
+		h1 += c;
+
+		input += POLY1305_BLOCK_SIZE;
+	} while (--nblocks);
+
+	state->h64[0] = h0;
+	state->h64[1] = h1;
+	state->h64[2] = h2;
+}
+EXPORT_SYMBOL(poly1305_core_blocks);
+
+void poly1305_core_emit(const struct poly1305_state *state, const u32 nonce[4],
+			void *dst)
+{
+	u8 *mac = dst;
+	u64 h0, h1, h2, c;
+	u64 g0, g1, g2;
+	u64 t0, t1;
+
+	/* fully carry h */
+	h0 = state->h64[0];
+	h1 = state->h64[1];
+	h2 = state->h64[2];
+
+	c = h1 >> 44;
+	h1 &= 0xfffffffffffULL;
+	h2 += c;
+	c = h2 >> 42;
+	h2 &= 0x3ffffffffffULL;
+	h0 += c * 5;
+	c = h0 >> 44;
+	h0 &= 0xfffffffffffULL;
+	h1 += c;
+	c = h1 >> 44;
+	h1 &= 0xfffffffffffULL;
+	h2 += c;
+	c = h2 >> 42;
+	h2 &= 0x3ffffffffffULL;
+	h0 += c * 5;
+	c = h0 >> 44;
+	h0 &= 0xfffffffffffULL;
+	h1 += c;
+
+	/* compute h + -p */
+	g0 = h0 + 5;
+	c  = g0 >> 44;
+	g0 &= 0xfffffffffffULL;
+	g1 = h1 + c;
+	c  = g1 >> 44;
+	g1 &= 0xfffffffffffULL;
+	g2 = h2 + c - (1ULL << 42);
+
+	/* select h if h < p, or h + -p if h >= p */
+	c = (g2 >> ((sizeof(u64) * 8) - 1)) - 1;
+	g0 &= c;
+	g1 &= c;
+	g2 &= c;
+	c  = ~c;
+	h0 = (h0 & c) | g0;
+	h1 = (h1 & c) | g1;
+	h2 = (h2 & c) | g2;
+
+	if (likely(nonce)) {
+		/* h = (h + nonce) */
+		t0 = ((u64)nonce[1] << 32) | nonce[0];
+		t1 = ((u64)nonce[3] << 32) | nonce[2];
+
+		h0 += t0 & 0xfffffffffffULL;
+		c = h0 >> 44;
+		h0 &= 0xfffffffffffULL;
+		h1 += (((t0 >> 44) | (t1 << 20)) & 0xfffffffffffULL) + c;
+		c = h1 >> 44;
+		h1 &= 0xfffffffffffULL;
+		h2 += (((t1 >> 24)) & 0x3ffffffffffULL) + c;
+		h2 &= 0x3ffffffffffULL;
+	}
+
+	/* mac = h % (2^128) */
+	h0 = h0 | (h1 << 44);
+	h1 = (h1 >> 20) | (h2 << 24);
+
+	put_unaligned_le64(h0, &mac[0]);
+	put_unaligned_le64(h1, &mac[8]);
+}
+EXPORT_SYMBOL(poly1305_core_emit);
diff --git a/lib/crypto/poly1305.c b/lib/crypto/poly1305.c
index 32ec293c65ae..9d2d14df0fee 100644
--- a/lib/crypto/poly1305.c
+++ b/lib/crypto/poly1305.c
@@ -12,151 +12,9 @@
 #include <linux/module.h>
 #include <asm/unaligned.h>
 
-static inline u64 mlt(u64 a, u64 b)
-{
-	return a * b;
-}
-
-static inline u32 sr(u64 v, u_char n)
-{
-	return v >> n;
-}
-
-static inline u32 and(u32 v, u32 mask)
-{
-	return v & mask;
-}
-
-void poly1305_core_setkey(struct poly1305_key *key, const u8 *raw_key)
-{
-	/* r &= 0xffffffc0ffffffc0ffffffc0fffffff */
-	key->r[0] = (get_unaligned_le32(raw_key +  0) >> 0) & 0x3ffffff;
-	key->r[1] = (get_unaligned_le32(raw_key +  3) >> 2) & 0x3ffff03;
-	key->r[2] = (get_unaligned_le32(raw_key +  6) >> 4) & 0x3ffc0ff;
-	key->r[3] = (get_unaligned_le32(raw_key +  9) >> 6) & 0x3f03fff;
-	key->r[4] = (get_unaligned_le32(raw_key + 12) >> 8) & 0x00fffff;
-}
-EXPORT_SYMBOL_GPL(poly1305_core_setkey);
-
-void poly1305_core_blocks(struct poly1305_state *state,
-			  const struct poly1305_key *key, const void *src,
-			  unsigned int nblocks, u32 hibit)
-{
-	u32 r0, r1, r2, r3, r4;
-	u32 s1, s2, s3, s4;
-	u32 h0, h1, h2, h3, h4;
-	u64 d0, d1, d2, d3, d4;
-
-	if (!nblocks)
-		return;
-
-	r0 = key->r[0];
-	r1 = key->r[1];
-	r2 = key->r[2];
-	r3 = key->r[3];
-	r4 = key->r[4];
-
-	s1 = r1 * 5;
-	s2 = r2 * 5;
-	s3 = r3 * 5;
-	s4 = r4 * 5;
-
-	h0 = state->h[0];
-	h1 = state->h[1];
-	h2 = state->h[2];
-	h3 = state->h[3];
-	h4 = state->h[4];
-
-	do {
-		/* h += m[i] */
-		h0 += (get_unaligned_le32(src +  0) >> 0) & 0x3ffffff;
-		h1 += (get_unaligned_le32(src +  3) >> 2) & 0x3ffffff;
-		h2 += (get_unaligned_le32(src +  6) >> 4) & 0x3ffffff;
-		h3 += (get_unaligned_le32(src +  9) >> 6) & 0x3ffffff;
-		h4 += (get_unaligned_le32(src + 12) >> 8) | (hibit << 24);
-
-		/* h *= r */
-		d0 = mlt(h0, r0) + mlt(h1, s4) + mlt(h2, s3) +
-		     mlt(h3, s2) + mlt(h4, s1);
-		d1 = mlt(h0, r1) + mlt(h1, r0) + mlt(h2, s4) +
-		     mlt(h3, s3) + mlt(h4, s2);
-		d2 = mlt(h0, r2) + mlt(h1, r1) + mlt(h2, r0) +
-		     mlt(h3, s4) + mlt(h4, s3);
-		d3 = mlt(h0, r3) + mlt(h1, r2) + mlt(h2, r1) +
-		     mlt(h3, r0) + mlt(h4, s4);
-		d4 = mlt(h0, r4) + mlt(h1, r3) + mlt(h2, r2) +
-		     mlt(h3, r1) + mlt(h4, r0);
-
-		/* (partial) h %= p */
-		d1 += sr(d0, 26);     h0 = and(d0, 0x3ffffff);
-		d2 += sr(d1, 26);     h1 = and(d1, 0x3ffffff);
-		d3 += sr(d2, 26);     h2 = and(d2, 0x3ffffff);
-		d4 += sr(d3, 26);     h3 = and(d3, 0x3ffffff);
-		h0 += sr(d4, 26) * 5; h4 = and(d4, 0x3ffffff);
-		h1 += h0 >> 26;       h0 = h0 & 0x3ffffff;
-
-		src += POLY1305_BLOCK_SIZE;
-	} while (--nblocks);
-
-	state->h[0] = h0;
-	state->h[1] = h1;
-	state->h[2] = h2;
-	state->h[3] = h3;
-	state->h[4] = h4;
-}
-EXPORT_SYMBOL_GPL(poly1305_core_blocks);
-
-void poly1305_core_emit(const struct poly1305_state *state, void *dst)
-{
-	u32 h0, h1, h2, h3, h4;
-	u32 g0, g1, g2, g3, g4;
-	u32 mask;
-
-	/* fully carry h */
-	h0 = state->h[0];
-	h1 = state->h[1];
-	h2 = state->h[2];
-	h3 = state->h[3];
-	h4 = state->h[4];
-
-	h2 += (h1 >> 26);     h1 = h1 & 0x3ffffff;
-	h3 += (h2 >> 26);     h2 = h2 & 0x3ffffff;
-	h4 += (h3 >> 26);     h3 = h3 & 0x3ffffff;
-	h0 += (h4 >> 26) * 5; h4 = h4 & 0x3ffffff;
-	h1 += (h0 >> 26);     h0 = h0 & 0x3ffffff;
-
-	/* compute h + -p */
-	g0 = h0 + 5;
-	g1 = h1 + (g0 >> 26);             g0 &= 0x3ffffff;
-	g2 = h2 + (g1 >> 26);             g1 &= 0x3ffffff;
-	g3 = h3 + (g2 >> 26);             g2 &= 0x3ffffff;
-	g4 = h4 + (g3 >> 26) - (1 << 26); g3 &= 0x3ffffff;
-
-	/* select h if h < p, or h + -p if h >= p */
-	mask = (g4 >> ((sizeof(u32) * 8) - 1)) - 1;
-	g0 &= mask;
-	g1 &= mask;
-	g2 &= mask;
-	g3 &= mask;
-	g4 &= mask;
-	mask = ~mask;
-	h0 = (h0 & mask) | g0;
-	h1 = (h1 & mask) | g1;
-	h2 = (h2 & mask) | g2;
-	h3 = (h3 & mask) | g3;
-	h4 = (h4 & mask) | g4;
-
-	/* h = h % (2^128) */
-	put_unaligned_le32((h0 >>  0) | (h1 << 26), dst +  0);
-	put_unaligned_le32((h1 >>  6) | (h2 << 20), dst +  4);
-	put_unaligned_le32((h2 >> 12) | (h3 << 14), dst +  8);
-	put_unaligned_le32((h3 >> 18) | (h4 <<  8), dst + 12);
-}
-EXPORT_SYMBOL_GPL(poly1305_core_emit);
-
 void poly1305_init_generic(struct poly1305_desc_ctx *desc, const u8 *key)
 {
-	poly1305_core_setkey(desc->r, key);
+	poly1305_core_setkey(&desc->core_r, key);
 	desc->s[0] = get_unaligned_le32(key + 16);
 	desc->s[1] = get_unaligned_le32(key + 20);
 	desc->s[2] = get_unaligned_le32(key + 24);
@@ -164,7 +22,7 @@ void poly1305_init_generic(struct poly1305_desc_ctx *desc, const u8 *key)
 	poly1305_core_init(&desc->h);
 	desc->buflen = 0;
 	desc->sset = true;
-	desc->rset = 1;
+	desc->rset = 2;
 }
 EXPORT_SYMBOL_GPL(poly1305_init_generic);
 
@@ -181,13 +39,14 @@ void poly1305_update_generic(struct poly1305_desc_ctx *desc, const u8 *src,
 		desc->buflen += bytes;
 
 		if (desc->buflen == POLY1305_BLOCK_SIZE) {
-			poly1305_core_blocks(&desc->h, desc->r, desc->buf, 1, 1);
+			poly1305_core_blocks(&desc->h, &desc->core_r, desc->buf,
+					     1, 1);
 			desc->buflen = 0;
 		}
 	}
 
 	if (likely(nbytes >= POLY1305_BLOCK_SIZE)) {
-		poly1305_core_blocks(&desc->h, desc->r, src,
+		poly1305_core_blocks(&desc->h, &desc->core_r, src,
 				     nbytes / POLY1305_BLOCK_SIZE, 1);
 		src += nbytes - (nbytes % POLY1305_BLOCK_SIZE);
 		nbytes %= POLY1305_BLOCK_SIZE;
@@ -202,28 +61,14 @@ EXPORT_SYMBOL_GPL(poly1305_update_generic);
 
 void poly1305_final_generic(struct poly1305_desc_ctx *desc, u8 *dst)
 {
-	__le32 digest[4];
-	u64 f = 0;
-
 	if (unlikely(desc->buflen)) {
 		desc->buf[desc->buflen++] = 1;
 		memset(desc->buf + desc->buflen, 0,
 		       POLY1305_BLOCK_SIZE - desc->buflen);
-		poly1305_core_blocks(&desc->h, desc->r, desc->buf, 1, 0);
+		poly1305_core_blocks(&desc->h, &desc->core_r, desc->buf, 1, 0);
 	}
 
-	poly1305_core_emit(&desc->h, digest);
-
-	/* mac = (h + s) % (2^128) */
-	f = (f >> 32) + le32_to_cpu(digest[0]) + desc->s[0];
-	put_unaligned_le32(f, dst + 0);
-	f = (f >> 32) + le32_to_cpu(digest[1]) + desc->s[1];
-	put_unaligned_le32(f, dst + 4);
-	f = (f >> 32) + le32_to_cpu(digest[2]) + desc->s[2];
-	put_unaligned_le32(f, dst + 8);
-	f = (f >> 32) + le32_to_cpu(digest[3]) + desc->s[3];
-	put_unaligned_le32(f, dst + 12);
-
+	poly1305_core_emit(&desc->h, desc->s, dst);
 	*desc = (struct poly1305_desc_ctx){};
 }
 EXPORT_SYMBOL_GPL(poly1305_final_generic);
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-09-23 07:20:33 +0000