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-rw-r--r--src/lib/utils/cpuid.cpp2
-rw-r--r--src/lib/utils/get_byte.h12
-rw-r--r--src/lib/utils/info.txt4
-rw-r--r--src/lib/utils/loadstor.h14
-rw-r--r--src/lib/utils/mem_ops.h127
-rw-r--r--src/lib/utils/parsing.cpp2
6 files changed, 143 insertions, 18 deletions
diff --git a/src/lib/utils/cpuid.cpp b/src/lib/utils/cpuid.cpp
index 817bf4f52..218b6553c 100644
--- a/src/lib/utils/cpuid.cpp
+++ b/src/lib/utils/cpuid.cpp
@@ -7,7 +7,7 @@
#include <botan/cpuid.h>
#include <botan/types.h>
-#include <botan/get_byte.h>
+#include <botan/loadstor.h>
#include <botan/mem_ops.h>
#include <ostream>
diff --git a/src/lib/utils/get_byte.h b/src/lib/utils/get_byte.h
index 0846befbd..14f55b97b 100644
--- a/src/lib/utils/get_byte.h
+++ b/src/lib/utils/get_byte.h
@@ -12,18 +12,6 @@
namespace Botan {
-/**
-* Byte extraction
-* @param byte_num which byte to extract, 0 == highest byte
-* @param input the value to extract from
-* @return byte byte_num of input
-*/
-template<typename T> inline byte get_byte(size_t byte_num, T input)
- {
- return static_cast<byte>(
- input >> ((sizeof(T)-1-(byte_num&(sizeof(T)-1))) << 3)
- );
- }
}
diff --git a/src/lib/utils/info.txt b/src/lib/utils/info.txt
index b8c7b85d2..7d3216b1c 100644
--- a/src/lib/utils/info.txt
+++ b/src/lib/utils/info.txt
@@ -1,4 +1,4 @@
-define UTIL_FUNCTIONS 20140123
+define UTIL_FUNCTIONS 20150919
load_on always
@@ -10,7 +10,6 @@ charset.h
cpuid.h
database.h
exceptn.h
-get_byte.h
loadstor.h
mem_ops.h
mul128.h
@@ -29,5 +28,4 @@ rounding.h
semaphore.h
stl_util.h
ta_utils.h
-xor_buf.h
</header:internal>
diff --git a/src/lib/utils/loadstor.h b/src/lib/utils/loadstor.h
index d3871480c..53700fc86 100644
--- a/src/lib/utils/loadstor.h
+++ b/src/lib/utils/loadstor.h
@@ -11,7 +11,6 @@
#include <botan/types.h>
#include <botan/bswap.h>
-#include <botan/get_byte.h>
#include <botan/mem_ops.h>
#include <vector>
@@ -40,6 +39,19 @@
namespace Botan {
/**
+* Byte extraction
+* @param byte_num which byte to extract, 0 == highest byte
+* @param input the value to extract from
+* @return byte byte_num of input
+*/
+template<typename T> inline byte get_byte(size_t byte_num, T input)
+ {
+ return static_cast<byte>(
+ input >> ((sizeof(T)-1-(byte_num&(sizeof(T)-1))) << 3)
+ );
+ }
+
+/**
* Make a u16bit from two bytes
* @param i0 the first byte
* @param i1 the second byte
diff --git a/src/lib/utils/mem_ops.h b/src/lib/utils/mem_ops.h
index f9e39fa31..6ea7bdafe 100644
--- a/src/lib/utils/mem_ops.h
+++ b/src/lib/utils/mem_ops.h
@@ -10,6 +10,7 @@
#include <botan/types.h>
#include <cstring>
+#include <vector>
namespace Botan {
@@ -70,6 +71,132 @@ template<typename T> inline bool same_mem(const T* p1, const T* p2, size_t n)
return difference == 0;
}
+/**
+* XOR arrays. Postcondition out[i] = in[i] ^ out[i] forall i = 0...length
+* @param out the input/output buffer
+* @param in the read-only input buffer
+* @param length the length of the buffers
+*/
+template<typename T>
+void xor_buf(T out[], const T in[], size_t length)
+ {
+ while(length >= 8)
+ {
+ out[0] ^= in[0]; out[1] ^= in[1];
+ out[2] ^= in[2]; out[3] ^= in[3];
+ out[4] ^= in[4]; out[5] ^= in[5];
+ out[6] ^= in[6]; out[7] ^= in[7];
+
+ out += 8; in += 8; length -= 8;
+ }
+
+ for(size_t i = 0; i != length; ++i)
+ out[i] ^= in[i];
+ }
+
+/**
+* XOR arrays. Postcondition out[i] = in[i] ^ in2[i] forall i = 0...length
+* @param out the output buffer
+* @param in the first input buffer
+* @param in2 the second output buffer
+* @param length the length of the three buffers
+*/
+template<typename T> void xor_buf(T out[],
+ const T in[],
+ const T in2[],
+ size_t length)
+ {
+ while(length >= 8)
+ {
+ out[0] = in[0] ^ in2[0];
+ out[1] = in[1] ^ in2[1];
+ out[2] = in[2] ^ in2[2];
+ out[3] = in[3] ^ in2[3];
+ out[4] = in[4] ^ in2[4];
+ out[5] = in[5] ^ in2[5];
+ out[6] = in[6] ^ in2[6];
+ out[7] = in[7] ^ in2[7];
+
+ in += 8; in2 += 8; out += 8; length -= 8;
+ }
+
+ for(size_t i = 0; i != length; ++i)
+ out[i] = in[i] ^ in2[i];
+ }
+
+#if BOTAN_TARGET_UNALIGNED_MEMORY_ACCESS_OK
+
+template<>
+inline void xor_buf<byte>(byte out[], const byte in[], size_t length)
+ {
+ while(length >= 8)
+ {
+ *reinterpret_cast<u64bit*>(out) ^= *reinterpret_cast<const u64bit*>(in);
+ out += 8; in += 8; length -= 8;
+ }
+
+ for(size_t i = 0; i != length; ++i)
+ out[i] ^= in[i];
+ }
+
+template<>
+inline void xor_buf<byte>(byte out[],
+ const byte in[],
+ const byte in2[],
+ size_t length)
+ {
+ while(length >= 8)
+ {
+ *reinterpret_cast<u64bit*>(out) =
+ *reinterpret_cast<const u64bit*>(in) ^
+ *reinterpret_cast<const u64bit*>(in2);
+
+ in += 8; in2 += 8; out += 8; length -= 8;
+ }
+
+ for(size_t i = 0; i != length; ++i)
+ out[i] = in[i] ^ in2[i];
+ }
+
+#endif
+
+template<typename Alloc, typename Alloc2>
+void xor_buf(std::vector<byte, Alloc>& out,
+ const std::vector<byte, Alloc2>& in,
+ size_t n)
+ {
+ xor_buf(out.data(), in.data(), n);
+ }
+
+template<typename Alloc>
+void xor_buf(std::vector<byte, Alloc>& out,
+ const byte* in,
+ size_t n)
+ {
+ xor_buf(out.data(), in, n);
+ }
+
+template<typename Alloc, typename Alloc2>
+void xor_buf(std::vector<byte, Alloc>& out,
+ const byte* in,
+ const std::vector<byte, Alloc2>& in2,
+ size_t n)
+ {
+ xor_buf(out.data(), in, in2.data(), n);
+ }
+
+template<typename T, typename Alloc, typename Alloc2>
+std::vector<T, Alloc>&
+operator^=(std::vector<T, Alloc>& out,
+ const std::vector<T, Alloc2>& in)
+ {
+ if(out.size() < in.size())
+ out.resize(in.size());
+
+ xor_buf(out.data(), in.data(), in.size());
+ return out;
+ }
+
}
#endif
diff --git a/src/lib/utils/parsing.cpp b/src/lib/utils/parsing.cpp
index 4feea8d60..ea89c8e5f 100644
--- a/src/lib/utils/parsing.cpp
+++ b/src/lib/utils/parsing.cpp
@@ -9,7 +9,7 @@
#include <botan/parsing.h>
#include <botan/exceptn.h>
#include <botan/charset.h>
-#include <botan/get_byte.h>
+#include <botan/loadstor.h>
#include <limits>
#include <set>
#include <stdexcept>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 12:49:10 +0000