DSAKeyPairGenerator.initialize
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public abstract void initialize( DSAParams params,
SecureRandom random ) throws InvalidParameterException
Parameters
- params
- the parameters to use to generate the keys.
- random
- the random bit source to use to generate
key bits.
Description
Initializes the key pair generator using p, q and g, the DSA
family parameters.
Exceptions
InvalidParameterException
if the parameters passed are
invalid or null.
public abstract void initialize( int modlen,
boolean genParams,
SecureRandom random ) throws InvalidParameterException
Parameters
- modlen
- the modulus length, in bits. Valid values are any
multiple of 8 between 512 and 1024, inclusive.
- random
- the random bit source to use to generate
key bits.
- genParams
- whether or not to generate new parameters for
the modulus length requested.
Description
Initializes the key pair generator for a given modulus length,
without parameters.
If genParams is true, this method will generate new
p, q and g parameters. If it is false, the method will use precomputed
parameters for the modulus length requested. If there are no
precomputed parameters for that modulus length, an exception will be
thrown. It is guaranteed that there will always be
default parameters for modulus lengths of 512 and 1024 bits.
Exceptions
InvalidParameterException
if the modulus length is not
between 512 and 1024, or if genParams is false and there are
not precomputed parameters for the modulus length requested.