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@TransactionType(value=SUPPORTS) public interface RSAPrivateKey
The RSAPrivateKey class is used to sign data using the RSA
algorithm in its modulus/exponent form. It may also be used by the
javacardx.crypto.Cipher class to encrypt/decrypt messages.
When both the modulus and exponent of the key are set, the key is initialized and ready for use.
RSAPublicKey,
RSAPrivateCrtKey,
KeyBuilder,
Signature,
javacardx.crypto.Cipher,
javacardx.crypto.KeyEncryption| Method Summary | |
|---|---|
short |
getExponent(byte[] buffer,
short offset)
Returns the private exponent value of the key in plain text. |
short |
getModulus(byte[] buffer,
short offset)
Returns the modulus value of the key in plain text. |
void |
setExponent(byte[] buffer,
short offset,
short length)
Sets the private exponent value of the key. |
void |
setModulus(byte[] buffer,
short offset,
short length)
Sets the modulus value of the key. |
| Methods inherited from interface javacard.security.Key |
|---|
clearKey, getSize, getType, getTypeName, isInitialized |
| Method Detail |
|---|
void setModulus(byte[] buffer,
short offset,
short length)
throws CryptoException
Note:
javacardx.crypto.KeyEncryption
interface and the Cipher object specified via setKeyCipher()
is not null, the modulus value is decrypted using the Cipher object.
buffer - the input bufferoffset - the offset into the input buffer at which the modulus value
beginslength - the length of the modulus
CryptoException - with the following reason code:
CryptoException.ILLEGAL_VALUE if the
input modulus data length is inconsistent with the
implementation or if input data decryption is required and
fails.
void setExponent(byte[] buffer,
short offset,
short length)
throws CryptoException
Note:
javacardx.crypto.KeyEncryption
interface and the Cipher object specified via setKeyCipher()
is not null, the exponent value is decrypted using the Cipher object.
buffer - the input bufferoffset - the offset into the input buffer at which the exponent value
beginslength - the length of the exponent
CryptoException - with the following reason code:
CryptoException.ILLEGAL_VALUE if the
input exponent data length is inconsistent with the
implementation or if input data decryption is required and
fails.
short getModulus(byte[] buffer,
short offset)
buffer - the output bufferoffset - the offset into the output buffer at which the modulus value
starts
CryptoException - with the following reason code:
CryptoException.UNINITIALIZED_KEY if
the modulus value of the key has not been successfully
initialized since the time the initialized state of the
key was set to false.
Key
short getExponent(byte[] buffer,
short offset)
buffer - the output bufferoffset - the offset into the output buffer at which the exponent value
begins
CryptoException - with the following reason code:
CryptoException.UNINITIALIZED_KEY if
the private exponent value of the key has not been
successfully initialized since the time the initialized
state of the key was set to false.
Key
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