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better prime number generator. improved ELG key generation

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This commit is contained in:
Werner Koch 1997-12-19 11:41:47 +00:00
parent 15426c6d96
commit ee8d92fefa
22 changed files with 1225 additions and 623 deletions
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4
cipher/dsa.c
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@ -86,7 +86,7 @@ gen_k( MPI p )
if( DBG_CIPHER )
fputc('.', stderr);
mpi_set_bytes( k, nbits, get_random_byte, 1 );
mpi_set_bit( k, nbits-1 ); /* make sure it's high (really needed?) */
mpi_set_highbit( k, nbits-1 ); /* make sure it's high (really needed?) */
if( mpi_cmp( k, p_1 ) >= 0 )
continue; /* is not smaller than (p-1) */
if( mpi_gcd( temp, k, p_1 ) )
@ -126,7 +126,7 @@ dsa_generate( DSA_public_key *pk, DSA_secret_key *sk, unsigned nbits )
if( DBG_CIPHER )
fputc('.', stderr);
mpi_set_bytes( x, nbits, get_random_byte, 1 ); /* fixme: should be 2 */
mpi_set_bit( x, nbits-1 ); /* make sure it's high (needed?) */
mpi_set_highbit( x, nbits-1 ); /* make sure it's high (needed?) */
} while( mpi_cmp( x, p ) >= 0 ); /* x must be smaller than p */
y = mpi_alloc(nbits/BITS_PER_MPI_LIMB);