diff options
author | Keith Isdale <keith.isdale@nokia.com> | 2010-07-26 14:56:53 +1000 |
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committer | Keith Isdale <keith.isdale@nokia.com> | 2010-07-26 14:56:53 +1000 |
commit | 9f034793bcfc51c2b7c1dd14db806f7258f9a9eb (patch) | |
tree | 63bd0f50ce5b77828ad8205eafd7b9412810499e /botan/src/engine/openssl/ossl_dh.cpp | |
parent | 619d92cfef29e653bfdf852e83888e50cfc4348f (diff) | |
parent | 65271649dbc90f3af1184ad1b23bdb64c0c07d07 (diff) |
Merge branch 'master' of git://git-nokia.trolltech.com.au/qtsoftware/research/qtuitest
Diffstat (limited to 'botan/src/engine/openssl/ossl_dh.cpp')
-rw-r--r-- | botan/src/engine/openssl/ossl_dh.cpp | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/botan/src/engine/openssl/ossl_dh.cpp b/botan/src/engine/openssl/ossl_dh.cpp new file mode 100644 index 0000000..72eab8a --- /dev/null +++ b/botan/src/engine/openssl/ossl_dh.cpp @@ -0,0 +1,60 @@ +/* +* OpenSSL Engine +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include <botan/eng_ossl.h> +#include <botan/bn_wrap.h> +#include <openssl/opensslv.h> + +#if OPENSSL_VERSION_NUMBER < 0x0090700F + #error Your OpenSSL install is too old, upgrade to 0.9.7 or later +#endif + +namespace Botan { + +#if defined(BOTAN_HAS_DIFFIE_HELLMAN) + +namespace { + +/* +* OpenSSL DH Operation +*/ +class OpenSSL_DH_Op : public DH_Operation + { + public: + BigInt agree(const BigInt& i) const; + DH_Operation* clone() const { return new OpenSSL_DH_Op(*this); } + + OpenSSL_DH_Op(const DL_Group& group, const BigInt& x_bn) : + x(x_bn), p(group.get_p()) {} + private: + OSSL_BN x, p; + OSSL_BN_CTX ctx; + }; + +/* +* OpenSSL DH Key Agreement Operation +*/ +BigInt OpenSSL_DH_Op::agree(const BigInt& i_bn) const + { + OSSL_BN i(i_bn), r; + BN_mod_exp(r.value, i.value, x.value, p.value, ctx.value); + return r.to_bigint(); + } + +} + +/* +* Acquire a DH op +*/ +DH_Operation* OpenSSL_Engine::dh_op(const DL_Group& group, + const BigInt& x) const + { + return new OpenSSL_DH_Op(group, x); + } +#endif + +} |