Method for generating public and private key pairs without using a passphrase

In a data processing system, a method for managing a public key cryptographic system including a public key, private key pair generator, comprising the steps of:

• generating a first random number using a first seed value derived from a passphrase;
• generating a second random number using a second seed value unknown to a user;
• generating a first public key, private key pair signal in a generating means using said first random number and generating a first public key control vector signal and a first private key control vector signal for defining a first use of said first public key and of said first private key, respectively;
• generating a second public key, private key pair signal using said second random number and generating a second public key control vector signal and a second private key control vector signal for defining a second use of said second public key and of said second private key, respectively;
• controlling the use of said first public key and said first private key in controlling means using said first public key control vector signal and said first private key control vector signal, respectively;
• controlling the use of said second public key and said second private key using said second public key control vector signal and said second private key control vector signal, respectively.

In a data processing system, a method for managing a cryptographic system having a key generator, comprising the steps of:

• generating a first random number using a first seed value derived from a passphrase;
• generating a second random number using a second seed value unknown to the user;
• generating a first key signal in a generating means using said first random number and generating a first control vector signal for controlling the use of said first key signal;
• generating a second key signal using said second random number and generating a second control vector signal controlling a second use of said second key signal;
• controlling the use of said first key signal in control means with said first control vector signal;
• controlling the use of said second key signal with said second control vector signal;
• said first use of said first key signal being different from said second use of said second key signal.

In combination, a data processing system and a program for managing a public key cryptographic system which includes a public key, private key pair generator, said program being executed on said data processing system, said combination performing a method comprising the steps of:

• generating a first public key, private key pair signal in a generating means using a first seed value known to a user, and generating a first control vector signal defining a first use of said first public key, private key pair signal;
• wherein said first seed value is generated from a passphrase;
• generating a second public key, private key pair signal using a second seed value unknown to the user, and generating a second control vector signal defining a second use of said second public key, private key pair signal;
• outputting first output signals for controlling the use of said first public key, private key pair signal in a controlling means using said first control vector signal;
• and
• outputting second output signals for controlling the use of said second public key, private key pair signal with said second control vector signal.

In combination, a data processing system and a program for managing a public key cryptographic system including a public key, private key pair generator, said program being executed on said data processing system, said combination performing a method comprising the steps of:

• generating a first random number using a first seed value derived from a passphrase;
• generating a second random number using a second seed value unknown to a user;
• generating a first public key, private key pair signal in a generating means using said first random number and generating a first public key control vector signal and a first private key control vector signal for defining a first use of said first public key and of said first private key, respectively;
• generating a second public key, private key pair signal using said second random number and generating a second public key control vector signal and a second private key control vector signal for defining a second use of said second public key and of said second private key, respectively;
• outputting first output signals for controlling the use of said first public key and said first private key in controlling means using said first public key control vector signal and said first private key control vector signal, respectively;
• outputting second output signals for controlling the use of said second public key and said second private key using said second public key control vector signal and said second private key control vector signal, respectively.

In combination, a data processing system and a program for managing a cryptographic system having a key generator, said program being executed on said data processing system, said combination performing a method comprising the steps of:

• generating a first random number using a first seed value derived from a passphrase;
• generating a second random number using a second seed value unknown to the user;
• generating a first key signal in a generating means using said first random number and generating a first control vector signal for controlling the use of said first key signal;
• generating a second key signal using said second random number and generating a second control vector signal controlling a second use of said second key signal;
• outputting first signals for controlling the use of said first key signal in control means with said first control vector signal;
• outputting second signals for controlling the use of said second key signal with said second control vector signal;
• said first use of said first key signal being different from said second use of said second key signal.

In combination, a data processing system and a program for managing a public key cryptographic system including a public key, private key pair generator, said program being executed on said data processing system, said combination performing a method comprising the steps of:

• generating a random number signal in a generation means using a first seed value derived from a passphrase;
• and
• generating and outputting a public key, private key pair signal in said generating means using said random number and generating a first control vector signal for said public key and a second control vector signal for said private key;
• and outputting said first control vector signal for controlling the use of said public key and said second control vector signal for controlling the use of said private key.

In a data processing system, an apparatus for managing a public key cryptographic system which includes a public key, private key pair generator, comprising:

• first generating means for generating a first public key, private key pair signal using a first seed value known to a user, and generating a first control vector signal defining a first use of said first public key, private key pair signal;
• wherein said first seed value is generated from a passphrase;
• second generating means for generating a second public key, private key pair signal using a second seed value unknown to the user, and generating a second control vector signal defining a second use of said second public key, private key pair signal;
• controlling means coupled to said first generating means, for controlling the use of said first public key, private key pair signal using said first control vector signal;
• and
• said controlling means coupled to said second generating means, for controlling the use of said second public key, private key pair signal with said second control vector signal.

In a data processing system, an apparatus for managing a public key cryptographic system including a public key, private key pair generator, comprising:

• first generating means for generating a first random number using a first seed value derived from a passphrase;
• second generating means for generating a second random number using a second seed value unknown to a user;
• said first generating means generating a first public key, private key pair signal using said first random number and generating a first public key control vector signal and a first private key control vector signal for defining a first use of said first public key and of said first private key, respectively;
• said second generating means generating a second public key, private key pair signal using said second random number and generating a second public key control vector signal and a second private key control vector signal for defining a second use of said second public key and of said second private key, respectively;
• controlling means coupled to said first generating means, for controlling the use of said first public key and said first private key using said first public key control vector signal and said first private key control vector signal, respectively;
• said controlling means coupled to said second generating means, for controlling the use of said second public key and said second private key using said second public key control vector signal and said second private key control vector signal, respectively.

In a data processing system, an apparatus for managing a cryptographic system having a key generator, comprising;

• first generating means for generating a first random number using a first seed value derived from a passphrase;
• second generating means for generating a second random number using a second seed value unknown to the user;
• said first generating means generating a first key signal using said first random number and generating a first control vector signal for controlling the use of said first key signal;
• said second generating means generating a second key signal using said second random number and generating a second control vector signal controlling a second use of said second key signal;
• controlling means coupled to said first generating means, for controlling the use of said first key signal with said first control vector signal;
• said controlling means coupled to said second generating means, for controlling the use of said second key signal with said second control vector signal;
• said first use of said first key signal being different from said second use of said second key signal.