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| author | Werner Koch <wk@gnupg.org> | 2007-03-22 13:55:05 +0000 |
|---|---|---|
| committer | Werner Koch <wk@gnupg.org> | 2007-03-22 13:55:05 +0000 |
| commit | 96422a1a5059b9352f55488f2b47dfd6dfa0b423 (patch) | |
| tree | a940054b35e1d55ba6635100d58628f95898b971 /mpi/mpiutil.c | |
| parent | 5fb3fe0e58466d9556839cd7b5cfaab9468dd0cd (diff) | |
| download | libgcrypt-96422a1a5059b9352f55488f2b47dfd6dfa0b423.tar.gz | |
Experimental support for ECDSA.
This is not ready but the key generation and the self-test works.
Diffstat (limited to 'mpi/mpiutil.c')
| -rw-r--r-- | mpi/mpiutil.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/mpi/mpiutil.c b/mpi/mpiutil.c index 20e1ff02..51ea711f 100644 --- a/mpi/mpiutil.c +++ b/mpi/mpiutil.c @@ -31,9 +31,10 @@ /**************** * Note: It was a bad idea to use the number of limbs to allocate * because on a alpha the limbs are large but we normally need - * integers of n bits - So we should chnage this to bits (or bytes). + * integers of n bits - So we should change this to bits (or bytes). * - * But mpi_alloc is used in a lot of places :-) + * But mpi_alloc is used in a lot of places :-(. New code + * should use mpi_new. */ gcry_mpi_t _gcry_mpi_alloc( unsigned nlimbs ) @@ -308,6 +309,8 @@ _gcry_mpi_set( gcry_mpi_t w, gcry_mpi_t u) void _gcry_mpi_set_ui( gcry_mpi_t w, unsigned long u) { + /* FIXME: If U is 0 tehre is no ned to resize and thus possible + allocating the the limbs. */ RESIZE_IF_NEEDED(w, 1); w->d[0] = u; w->nlimbs = u? 1:0; @@ -370,6 +373,14 @@ gcry_mpi_swap( gcry_mpi_t a, gcry_mpi_t b) } +/* Internal version of mpi_new. */ +gcry_mpi_t +_gcry_mpi_new( unsigned int nbits ) +{ + return _gcry_mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1) / BITS_PER_MPI_LIMB ); +} + +/* External version of mpi_new. */ gcry_mpi_t gcry_mpi_new( unsigned int nbits ) { @@ -377,6 +388,14 @@ gcry_mpi_new( unsigned int nbits ) } +/* Internal version of mpi_snew. */ +gcry_mpi_t +_gcry_mpi_snew( unsigned int nbits ) +{ + return _gcry_mpi_alloc_secure( (nbits+BITS_PER_MPI_LIMB-1) / BITS_PER_MPI_LIMB ); +} + +/* External version of mpi_snew. */ gcry_mpi_t gcry_mpi_snew( unsigned int nbits ) { |