java.lang.Object | |
↳ | java.security.SignatureSpi |
Known Direct Subclasses |
SignatureSpi
is the
Service Provider Interface
(
SPI
)
definition for
Signature
.
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appRandom | Implementation specific source of randomness. |
Public Constructors | |||||||||||
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Public Methods | |||||||||||
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Creates and returns a copy of this
Object
.
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Protected Methods | |||||||||||
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This method was deprecated
in API level 1.
There is no generally accepted parameter naming convention.
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Returns the
AlgorithmParameters
of this
SignatureSpi
instance.
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Initializes this
SignatureSpi
instance for signing, using the
private key of the identity whose signature is going to be generated and
the specified source of randomness.
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Initializes this
SignatureSpi
instance for signing, using the
private key of the identity whose signature is going to be generated.
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Initializes this
SignatureSpi
instance for signature
verification, using the public key of the identity whose signature is
going to be verified.
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This method was deprecated
in API level 1.
Use
engineSetParameter(AlgorithmParameterSpec)
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Sets the specified
AlgorithmParameterSpec
.
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Generates and stores the signature of all updated data in the provided
byte[]
at the specified position with the specified length.
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Generates and returns the signature of all updated data.
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Updates the data to be verified or to be signed, using the specified
byte
.
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Updates the data to be verified or to be signed, using the specified
ByteBuffer
.
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Updates the data to be verified or to be signed, using the given
byte[]
, starting form the specified index for the specified length.
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Indicates whether the given
sigBytes
starting at index
offset
with
length
bytes can be verified using the public key or
a certificate of the signer.
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Indicates whether the given
sigBytes
can be verified using the
public key or a certificate of the signer.
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[Expand]
Inherited Methods
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From class
java.lang.Object
|
Creates and returns a copy of this
Object
. The default
implementation returns a so-called "shallow" copy: It creates a new
instance of the same class and then copies the field values (including
object references) from this instance to the new instance. A "deep" copy,
in contrast, would also recursively clone nested objects. A subclass that
needs to implement this kind of cloning should call
super.clone()
to create the new instance and then create deep copies of the nested,
mutable objects.
CloneNotSupportedException |
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This method was deprecated
in API level 1.
There is no generally accepted parameter naming convention.
Returns the value of the parameter with the specified name.
param | the name of the requested parameter value. |
---|
null
.
InvalidParameterException |
if
param
is not a valid parameter for this
SignatureSpi
or an other error occurs.
|
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Returns the
AlgorithmParameters
of this
SignatureSpi
instance.
AlgorithmParameters
of this
SignatureSpi
instance, maybe
null
.
Initializes this
SignatureSpi
instance for signing, using the
private key of the identity whose signature is going to be generated and
the specified source of randomness.
privateKey | the private key. |
---|---|
random |
the
SecureRandom
to use.
|
InvalidKeyException |
if
privateKey
is not valid.
|
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Initializes this
SignatureSpi
instance for signing, using the
private key of the identity whose signature is going to be generated.
privateKey | the private key. |
---|
InvalidKeyException |
if
privateKey
is not valid.
|
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Initializes this
SignatureSpi
instance for signature
verification, using the public key of the identity whose signature is
going to be verified.
publicKey | the public key. |
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InvalidKeyException |
if
publicKey
is not valid.
|
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This method was deprecated
in API level 1.
Use
engineSetParameter(AlgorithmParameterSpec)
Sets the specified parameter to the given value.
param | the name of the parameter. |
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value | the parameter value. |
InvalidParameterException | if the parameter is invalid, already set or is not allowed to be changed. |
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Sets the specified
AlgorithmParameterSpec
.
params | the parameter to set. |
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InvalidAlgorithmParameterException | if the parameter is invalid, already set or is not allowed to be changed. |
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Generates and stores the signature of all updated data in the provided
byte[]
at the specified position with the specified length.
This
SignatureSpi
instance is reset to the state of its last
initialization for signing and thus can be used for another signature
from the same identity.
outbuf | the buffer to store the signature. |
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offset |
the index of the first byte in
outbuf
to store.
|
len | the number of bytes allocated for the signature. |
outbuf
.
SignatureException |
if this
SignatureSpi
instance is not initialized
properly.
|
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IllegalArgumentException |
if
offset
or
len
are not valid in respect to
outbuf
.
|
Generates and returns the signature of all updated data.
This
SignatureSpi
instance is reset to the state of its last
initialization for signing and thus can be used for another signature
from the same identity.
SignatureException |
if this
SignatureSpi
instance is not initialized
properly.
|
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Updates the data to be verified or to be signed, using the specified
byte
.
b | the byte to update with. |
---|
SignatureException |
if this
SignatureSpi
instance is not initialized
properly.
|
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Updates the data to be verified or to be signed, using the specified
ByteBuffer
.
input |
the
ByteBuffer
to update with.
|
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RuntimeException |
since
SignatureException
is not specified for this
method it throws a
RuntimeException
if underlying
engineUpdate(byte[], int, int)
throws
SignatureException
.
|
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Updates the data to be verified or to be signed, using the given
byte[]
, starting form the specified index for the specified length.
b | the byte array to update with. |
---|---|
off |
the start index in
b
of the data.
|
len | the number of bytes to use. |
SignatureException |
if this
SignatureSpi
instance is not initialized
properly.
|
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Indicates whether the given
sigBytes
starting at index
offset
with
length
bytes can be verified using the public key or
a certificate of the signer.
This
SignatureSpi
instance is reset to the state of its last
initialization for verifying and thus can be used to verify another
signature of the same signer.
sigBytes |
the
byte[]
containing the signature to verify.
|
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offset |
the start index in
sigBytes
of the signature
|
length | the number of bytes allocated for the signature. |
true
if the signature was verified,
false
otherwise.
SignatureException |
if this
SignatureSpi
instance is not initialized
properly.
|
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IllegalArgumentException |
if
offset
or
length
are not valid in respect
to
sigBytes
.
|
Indicates whether the given
sigBytes
can be verified using the
public key or a certificate of the signer.
This
SignatureSpi
instance is reset to the state of its last
initialization for verifying and thus can be used to verify another
signature of the same signer.
sigBytes | the signature to verify. |
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true
if the signature was verified,
false
otherwise.
SignatureException |
if this
SignatureSpi
instance is not initialized
properly.
|
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