diff options
| author | Jack Lloyd <[email protected]> | 2018-12-06 19:30:23 -0500 |
|---|---|---|
| committer | Jack Lloyd <[email protected]> | 2018-12-06 19:30:23 -0500 |
| commit | bf82b2ebc63f10289832e6a2f834c5b172c4dc62 (patch) | |
| tree | 2bcbe6c5e7bff24d96e9ad941e14d5c885cecac9 /src/lib/pubkey | |
| parent | 68c12b19077205c9c4ff2069072fcd986e0e4c30 (diff) | |
In ECDSA cache the RFC6979 object
This is a very minor savings but does make a difference especially
for P-256.
Diffstat (limited to 'src/lib/pubkey')
| -rw-r--r-- | src/lib/pubkey/ecdsa/ecdsa.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/lib/pubkey/ecdsa/ecdsa.cpp b/src/lib/pubkey/ecdsa/ecdsa.cpp index cbb9eba67..5d89cc198 100644 --- a/src/lib/pubkey/ecdsa/ecdsa.cpp +++ b/src/lib/pubkey/ecdsa/ecdsa.cpp @@ -58,7 +58,7 @@ class ECDSA_Signature_Operation final : public PK_Ops::Signature_with_EMSA m_x(ecdsa.private_value()) { #if defined(BOTAN_HAS_RFC6979_GENERATOR) - m_rfc6979_hash = hash_for_emsa(emsa); + m_rfc6979.reset(new RFC6979_Nonce_Generator(hash_for_emsa(emsa), m_group.get_order(), m_x)); #endif m_b = m_group.random_scalar(rng); @@ -77,7 +77,7 @@ class ECDSA_Signature_Operation final : public PK_Ops::Signature_with_EMSA const BigInt& m_x; #if defined(BOTAN_HAS_RFC6979_GENERATOR) - std::string m_rfc6979_hash; + std::unique_ptr<RFC6979_Nonce_Generator> m_rfc6979; #endif std::vector<BigInt> m_ws; @@ -92,7 +92,7 @@ ECDSA_Signature_Operation::raw_sign(const uint8_t msg[], size_t msg_len, BigInt m(msg, msg_len, m_group.get_order_bits()); #if defined(BOTAN_HAS_RFC6979_GENERATOR) - const BigInt k = generate_rfc6979_nonce(m_x, m_group.get_order(), m, m_rfc6979_hash); + const BigInt k = m_rfc6979->nonce_for(m); #else const BigInt k = m_group.random_scalar(rng); #endif |