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authorJack Lloyd <[email protected]>2015-09-25 13:14:18 -0400
committerJack Lloyd <[email protected]>2015-09-25 13:14:18 -0400
commit0a95f77063421ae7620000f6f022bc0b2e271688 (patch)
tree48659a6b2cbe1557e66a51fe89e9329947149a99 /src
parent49502d7508cd5445322187043af564cd2306990b (diff)
parentee0460cff538a3de7ca89fb54d37215757659a42 (diff)
Merge pull request #288 from tiwoc/darwin_secrandom
Add the Darwin_SecRandom entropy source
Diffstat (limited to 'src')
-rw-r--r--src/build-data/cc/clang.txt1
-rw-r--r--src/lib/entropy/darwin_secrandom/darwin_secrandom.cpp28
-rw-r--r--src/lib/entropy/darwin_secrandom/darwin_secrandom.h31
-rw-r--r--src/lib/entropy/darwin_secrandom/info.txt17
-rw-r--r--src/lib/entropy/entropy_srcs.cpp8
5 files changed, 85 insertions, 0 deletions
diff --git a/src/build-data/cc/clang.txt b/src/build-data/cc/clang.txt
index 0fbc67ce9..129218dcd 100644
--- a/src/build-data/cc/clang.txt
+++ b/src/build-data/cc/clang.txt
@@ -6,6 +6,7 @@ output_to_option "-o "
add_include_dir_option -I
add_lib_dir_option -L
add_lib_option -l
+add_framework_option "-framework "
lang_flags "-std=c++11 -D_REENTRANT -fstack-protector"
diff --git a/src/lib/entropy/darwin_secrandom/darwin_secrandom.cpp b/src/lib/entropy/darwin_secrandom/darwin_secrandom.cpp
new file mode 100644
index 000000000..f04b75a12
--- /dev/null
+++ b/src/lib/entropy/darwin_secrandom/darwin_secrandom.cpp
@@ -0,0 +1,28 @@
+/*
+* Darwin SecRandomCopyBytes EntropySource
+* (C) 2015 Daniel Seither (Kullo GmbH)
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/internal/darwin_secrandom.h>
+#include <Security/Security.h>
+
+namespace Botan {
+
+/**
+* Gather entropy from SecRandomCopyBytes
+*/
+void Darwin_SecRandom::poll(Entropy_Accumulator& accum)
+ {
+ const size_t ENTROPY_BITS_PER_BYTE = 8;
+ const size_t BUF_SIZE = 256;
+
+ m_buf.resize(BUF_SIZE);
+ if (0 == SecRandomCopyBytes(kSecRandomDefault, m_buf.size(), m_buf.data()))
+ {
+ accum.add(m_buf.data(), m_buf.size(), ENTROPY_BITS_PER_BYTE);
+ }
+ }
+
+}
diff --git a/src/lib/entropy/darwin_secrandom/darwin_secrandom.h b/src/lib/entropy/darwin_secrandom/darwin_secrandom.h
new file mode 100644
index 000000000..504d5cc64
--- /dev/null
+++ b/src/lib/entropy/darwin_secrandom/darwin_secrandom.h
@@ -0,0 +1,31 @@
+/*
+* Darwin SecRandomCopyBytes EntropySource
+* (C) 2015 Daniel Seither (Kullo GmbH)
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ENTROPY_SRC_DARWIN_SECRANDOM_H__
+#define BOTAN_ENTROPY_SRC_DARWIN_SECRANDOM_H__
+
+#include <botan/entropy_src.h>
+
+namespace Botan {
+
+/**
+* Entropy source using SecRandomCopyBytes from Darwin's Security.framework
+*/
+class Darwin_SecRandom : public EntropySource
+ {
+ public:
+ std::string name() const override { return "Darwin SecRandomCopyBytes"; }
+
+ void poll(Entropy_Accumulator& accum) override;
+
+ private:
+ secure_vector<byte> m_buf;
+ };
+
+}
+
+#endif
diff --git a/src/lib/entropy/darwin_secrandom/info.txt b/src/lib/entropy/darwin_secrandom/info.txt
new file mode 100644
index 000000000..e12c341fd
--- /dev/null
+++ b/src/lib/entropy/darwin_secrandom/info.txt
@@ -0,0 +1,17 @@
+define ENTROPY_SRC_DARWIN_SECRANDOM 20150925
+
+<source>
+darwin_secrandom.cpp
+</source>
+
+<header:internal>
+darwin_secrandom.h
+</header:internal>
+
+<os>
+darwin
+</os>
+
+<frameworks>
+darwin -> Security
+</frameworks> \ No newline at end of file
diff --git a/src/lib/entropy/entropy_srcs.cpp b/src/lib/entropy/entropy_srcs.cpp
index d44ab8c92..d57160c88 100644
--- a/src/lib/entropy/entropy_srcs.cpp
+++ b/src/lib/entropy/entropy_srcs.cpp
@@ -43,6 +43,10 @@
#include <botan/internal/proc_walk.h>
#endif
+#if defined(BOTAN_HAS_ENTROPY_SRC_DARWIN_SECRANDOM)
+ #include <botan/internal/darwin_secrandom.h>
+#endif
+
namespace Botan {
namespace {
@@ -97,6 +101,10 @@ std::vector<std::unique_ptr<EntropySource>> get_default_entropy_sources()
));
#endif
+#if defined(BOTAN_HAS_ENTROPY_SRC_DARWIN_SECRANDOM)
+ sources.push_back(std::unique_ptr<EntropySource>(new Darwin_SecRandom));
+#endif
+
return sources;
}