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javacard.security
All Known Subinterfaces: DSAPrivateKey , DSAPublicKey
The DSAKey interface is the base interface for the DSA algorithm's private and public key implementations. A DSA private key implementation must also implement the DSAPrivateKey interface methods. A DSA public key implementation must also implement the DSAPublicKey interface methods. When all four components of the key (X or Y,P,Q,G) are set, the key is initialized and ready for use.
See Also:DSAPublicKey , DSAPrivateKey , KeyBuilder , Signature , javacardx.crypto.KeyEncryption
Method Summary | |
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short | getG (byte[] buffer,short offset) Returns the base parameter value of the key in plain text. |
short | getP (byte[] buffer,short offset) Returns the prime parameter value of the key in plain text. |
short | getQ (byte[] buffer,short offset) Returns the subprime parameter value of the key in plain text. |
void | setG (byte[] buffer,short offset,short length) Sets the base parameter value of the key. |
void | setP (byte[] buffer,short offset,short length) Sets the prime parameter value of the key. |
void | setQ (byte[] buffer,short offset,short length) Sets the subprime parameter value of the key. |
Method Detail |
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void setP(byte[] buffer, short offset, short length) throws CryptoException
Sets the prime parameter value of the key.
The plain text data format is big-endian and right-aligned (the least significant bit is the least significant
bit of last byte). Input prime parameter data is copied into the internal representation.
Note:
Parameters:buffer - the input buffer
offset - the offset into the input buffer at which the prime parameter value begins
length - the length of the prime parameter value
Throws:
CryptoException - with the following reason code:
void setQ(byte[] buffer, short offset, short length) throws CryptoException
Sets the subprime parameter value of the key.
The plain text data format is big-endian and right-aligned (the least significant bit is the least significant
bit of last byte). Input subprime parameter data is copied into the internal representation.
Note:
Parameters:buffer - the input buffer
offset - the offset into the input buffer at which the subprime parameter value begins
length - the length of the subprime parameter value
Throws:
CryptoException - with the following reason code:
void setG(byte[] buffer, short offset, short length) throws CryptoException
Sets the base parameter value of the key.
The plain text data format is big-endian and right-aligned (the least significant bit is the least significant
bit of last byte). Input base parameter data is copied into the internal representation.
Note:
Parameters:buffer - the input buffer
offset - the offset into the input buffer at which the base parameter value begins
length - the length of the base parameter value
Throws:
CryptoException - with the following reason code:
short getP(byte[] buffer, short offset)
Returns the prime parameter value of the key in plain text. The data format is big-endian and right-aligned (the least significant bit is the least significant bit of last byte).
Parameters:buffer - the output buffer
offset - the offset into the output buffer at which the prime parameter value starts
Returns:the byte length of the prime parameter value returned
Throws:
CryptoException - with the following reason code:
See Also:Key
short getQ(byte[] buffer, short offset)
Returns the subprime parameter value of the key in plain text. The data format is big-endian and right-aligned (the least significant bit is the least significant bit of last byte).
Parameters:buffer - the output buffer
offset - the offset into the output buffer at which the subprime parameter value begins
Returns:the byte length of the subprime parameter value returned
Throws:
CryptoException - with the following reason code:
See Also:Key
short getG(byte[] buffer, short offset)
Returns the base parameter value of the key in plain text. The data format is big-endian and right-aligned (the least significant bit is the least significant bit of last byte).
Parameters:buffer - the output buffer
offset - the offset into the output buffer at which the base parameter value begins
Returns:the byte length of the base parameter value returned
Throws:
CryptoException - with the following reason code:
See Also:Key