diff options
| author | Jack Lloyd <[email protected]> | 2018-02-26 17:28:35 -0500 |
|---|---|---|
| committer | Jack Lloyd <[email protected]> | 2018-02-26 17:28:35 -0500 |
| commit | 5fcc1c70d7ae2b2bac8598629e576a7a484b770a (patch) | |
| tree | f0b187bcfd635d721ac5c4a0245fbc3507d4292b /src/lib/pubkey/ec_group/curve_gfp.cpp | |
| parent | 539d364a5d6e52ed28684ecf2ae04e93fd3c46d8 (diff) | |
Avoid unnecessary calls to BigInt::grow_to
Diffstat (limited to 'src/lib/pubkey/ec_group/curve_gfp.cpp')
| -rw-r--r-- | src/lib/pubkey/ec_group/curve_gfp.cpp | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/lib/pubkey/ec_group/curve_gfp.cpp b/src/lib/pubkey/ec_group/curve_gfp.cpp index 83d1c841c..a55741fb0 100644 --- a/src/lib/pubkey/ec_group/curve_gfp.cpp +++ b/src/lib/pubkey/ec_group/curve_gfp.cpp @@ -85,7 +85,8 @@ void CurveGFp_Montgomery::curve_mul(BigInt& z, const BigInt& x, const BigInt& y, const size_t output_size = 2*m_p_words + 1; ws.resize(2*(m_p_words+2)); - z.grow_to(output_size); + if(z.size() < output_size) + z.grow_to(output_size); z.clear(); bigint_monty_mul(z, x, y, @@ -109,7 +110,8 @@ void CurveGFp_Montgomery::curve_sqr(BigInt& z, const BigInt& x, ws.resize(2*(m_p_words+2)); - z.grow_to(output_size); + if(z.size() < output_size) + z.grow_to(output_size); z.clear(); bigint_monty_sqr(z, x, m_p.data(), m_p_words, m_p_dash, @@ -164,9 +166,11 @@ void CurveGFp_NIST::curve_mul(BigInt& z, const BigInt& x, const BigInt& y, const size_t p_words = get_p_words(); const size_t output_size = 2*p_words + 1; + ws.resize(2*(p_words+2)); - z.grow_to(output_size); + if(z.size() < output_size) + z.grow_to(output_size); z.clear(); bigint_mul(z, x, y, ws.data(), ws.size()); @@ -188,7 +192,8 @@ void CurveGFp_NIST::curve_sqr(BigInt& z, const BigInt& x, ws.resize(2*(p_words+2)); - z.grow_to(output_size); + if(z.size() < output_size) + z.grow_to(output_size); z.clear(); bigint_sqr(z.mutable_data(), output_size, |