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-rw-r--r--src/modes/aead/gcm/clmul/clmul.cpp76
-rw-r--r--src/modes/aead/gcm/clmul/clmul.h14
-rw-r--r--src/modes/aead/gcm/clmul/info.txt8
-rw-r--r--src/modes/aead/gcm/gcm.cpp75
-rw-r--r--src/modes/aead/gcm/info.txt2
5 files changed, 101 insertions, 74 deletions
diff --git a/src/modes/aead/gcm/clmul/clmul.cpp b/src/modes/aead/gcm/clmul/clmul.cpp
new file mode 100644
index 000000000..cc6d581e3
--- /dev/null
+++ b/src/modes/aead/gcm/clmul/clmul.cpp
@@ -0,0 +1,76 @@
+/*
+* CLMUL hook
+* (C) 2013 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/internal/clmul.h>
+#include <immintrin.h>
+
+namespace Botan {
+
+void gcm_multiply_clmul(byte x[16], const byte H[16])
+ {
+ /*
+ * Algorithms 1 and 5 from Intel's CLMUL guide
+ */
+ const __m128i BSWAP_MASK = _mm_set_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
+
+ __m128i a = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&x[0]));
+ __m128i b = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&H[0]));
+
+ a = _mm_shuffle_epi8(a, BSWAP_MASK);
+ b = _mm_shuffle_epi8(b, BSWAP_MASK);
+
+ __m128i T0, T1, T2, T3, T4, T5;
+
+ T0 = _mm_clmulepi64_si128(a, b, 0x00);
+ T1 = _mm_clmulepi64_si128(a, b, 0x01);
+ T2 = _mm_clmulepi64_si128(a, b, 0x10);
+ T3 = _mm_clmulepi64_si128(a, b, 0x11);
+
+ T1 = _mm_xor_si128(T1, T2);
+ T2 = _mm_slli_si128(T1, 8);
+ T1 = _mm_srli_si128(T1, 8);
+ T0 = _mm_xor_si128(T0, T2);
+ T3 = _mm_xor_si128(T3, T1);
+
+ T4 = _mm_srli_epi32(T0, 31);
+ T0 = _mm_slli_epi32(T0, 1);
+
+ T5 = _mm_srli_epi32(T3, 31);
+ T3 = _mm_slli_epi32(T3, 1);
+
+ T2 = _mm_srli_si128(T4, 12);
+ T5 = _mm_slli_si128(T5, 4);
+ T4 = _mm_slli_si128(T4, 4);
+ T0 = _mm_or_si128(T0, T4);
+ T3 = _mm_or_si128(T3, T5);
+ T3 = _mm_or_si128(T3, T2);
+
+ T4 = _mm_slli_epi32(T0, 31);
+ T5 = _mm_slli_epi32(T0, 30);
+ T2 = _mm_slli_epi32(T0, 25);
+
+ T4 = _mm_xor_si128(T4, T5);
+ T4 = _mm_xor_si128(T4, T2);
+ T5 = _mm_srli_si128(T4, 4);
+ T3 = _mm_xor_si128(T3, T5);
+ T4 = _mm_slli_si128(T4, 12);
+ T0 = _mm_xor_si128(T0, T4);
+ T3 = _mm_xor_si128(T3, T0);
+
+ T4 = _mm_srli_epi32(T0, 1);
+ T1 = _mm_srli_epi32(T0, 2);
+ T2 = _mm_srli_epi32(T0, 7);
+ T3 = _mm_xor_si128(T3, T1);
+ T3 = _mm_xor_si128(T3, T2);
+ T3 = _mm_xor_si128(T3, T4);
+
+ T3 = _mm_shuffle_epi8(T3, BSWAP_MASK);
+
+ _mm_storeu_si128(reinterpret_cast<__m128i*>(&x[0]), T3);
+ }
+
+}
diff --git a/src/modes/aead/gcm/clmul/clmul.h b/src/modes/aead/gcm/clmul/clmul.h
new file mode 100644
index 000000000..ba197f2f7
--- /dev/null
+++ b/src/modes/aead/gcm/clmul/clmul.h
@@ -0,0 +1,14 @@
+/*
+* CLMUL hook
+* (C) 2013 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/types.h>
+
+namespace Botan {
+
+void gcm_multiply_clmul(byte x[16], const byte H[16]);
+
+}
diff --git a/src/modes/aead/gcm/clmul/info.txt b/src/modes/aead/gcm/clmul/info.txt
new file mode 100644
index 000000000..8a21b6ac2
--- /dev/null
+++ b/src/modes/aead/gcm/clmul/info.txt
@@ -0,0 +1,8 @@
+
+define GCM_CLMUL 20131227
+
+need_isa clmul,ssse3
+
+<header:internal>
+clmul.h
+</header:internal>
diff --git a/src/modes/aead/gcm/gcm.cpp b/src/modes/aead/gcm/gcm.cpp
index 004b25d80..b39e6ac92 100644
--- a/src/modes/aead/gcm/gcm.cpp
+++ b/src/modes/aead/gcm/gcm.cpp
@@ -10,85 +10,16 @@
#include <botan/internal/xor_buf.h>
#include <botan/loadstor.h>
-#if defined(BOTAN_TARGET_SUPPORTS_CLMUL)
- #include <immintrin.h>
+#if defined(BOTAN_HAS_GCM_CLMUL)
+ #include <botan/internal/clmul.h>
#include <botan/cpuid.h>
#endif
namespace Botan {
-namespace {
-
-#if defined(BOTAN_TARGET_SUPPORTS_CLMUL)
-void gcm_multiply_clmul(byte x[16], const byte H[16])
- {
- /*
- * Algorithms 1 and 5 from Intel's CLMUL guide
- */
- const __m128i BSWAP_MASK = _mm_set_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
-
- __m128i a = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&x[0]));
- __m128i b = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&H[0]));
-
- a = _mm_shuffle_epi8(a, BSWAP_MASK);
- b = _mm_shuffle_epi8(b, BSWAP_MASK);
-
- __m128i T0, T1, T2, T3, T4, T5;
-
- T0 = _mm_clmulepi64_si128(a, b, 0x00);
- T1 = _mm_clmulepi64_si128(a, b, 0x01);
- T2 = _mm_clmulepi64_si128(a, b, 0x10);
- T3 = _mm_clmulepi64_si128(a, b, 0x11);
-
- T1 = _mm_xor_si128(T1, T2);
- T2 = _mm_slli_si128(T1, 8);
- T1 = _mm_srli_si128(T1, 8);
- T0 = _mm_xor_si128(T0, T2);
- T3 = _mm_xor_si128(T3, T1);
-
- T4 = _mm_srli_epi32(T0, 31);
- T0 = _mm_slli_epi32(T0, 1);
-
- T5 = _mm_srli_epi32(T3, 31);
- T3 = _mm_slli_epi32(T3, 1);
-
- T2 = _mm_srli_si128(T4, 12);
- T5 = _mm_slli_si128(T5, 4);
- T4 = _mm_slli_si128(T4, 4);
- T0 = _mm_or_si128(T0, T4);
- T3 = _mm_or_si128(T3, T5);
- T3 = _mm_or_si128(T3, T2);
-
- T4 = _mm_slli_epi32(T0, 31);
- T5 = _mm_slli_epi32(T0, 30);
- T2 = _mm_slli_epi32(T0, 25);
-
- T4 = _mm_xor_si128(T4, T5);
- T4 = _mm_xor_si128(T4, T2);
- T5 = _mm_srli_si128(T4, 4);
- T3 = _mm_xor_si128(T3, T5);
- T4 = _mm_slli_si128(T4, 12);
- T0 = _mm_xor_si128(T0, T4);
- T3 = _mm_xor_si128(T3, T0);
-
- T4 = _mm_srli_epi32(T0, 1);
- T1 = _mm_srli_epi32(T0, 2);
- T2 = _mm_srli_epi32(T0, 7);
- T3 = _mm_xor_si128(T3, T1);
- T3 = _mm_xor_si128(T3, T2);
- T3 = _mm_xor_si128(T3, T4);
-
- T3 = _mm_shuffle_epi8(T3, BSWAP_MASK);
-
- _mm_storeu_si128(reinterpret_cast<__m128i*>(&x[0]), T3);
- }
-#endif
-
-}
-
void GHASH::gcm_multiply(secure_vector<byte>& x) const
{
-#if defined(BOTAN_TARGET_SUPPORTS_CLMUL)
+#if defined(BOTAN_HAS_GCM_CLMUL)
if(CPUID::has_clmul())
return gcm_multiply_clmul(&x[0], &m_H[0]);
#endif
diff --git a/src/modes/aead/gcm/info.txt b/src/modes/aead/gcm/info.txt
index be3ad285b..cf5f68bb5 100644
--- a/src/modes/aead/gcm/info.txt
+++ b/src/modes/aead/gcm/info.txt
@@ -1,7 +1,5 @@
define AEAD_GCM 20131128
-need_isa clmul,ssse3
-
<requires>
block
ctr