ECDsa.VerifyData Method

Definition

Namespace:

System.Security.Cryptography

Assembly:

System.Security.Cryptography.dll

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

Overloads

VerifyData(Byte[], Byte[], HashAlgorithmName)	Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.
VerifyData(Stream, Byte[], HashAlgorithmName)	Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.
VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName)	Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.
VerifyData(Byte[], Byte[], HashAlgorithmName, DSASignatureFormat)	Verifies that a digital signature is valid for the provided data.
VerifyData(Stream, Byte[], HashAlgorithmName, DSASignatureFormat)	Verifies that a digital signature is valid for the provided data.
VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)	Verifies that a digital signature is valid for the provided data.
VerifyData(Byte[], Int32, Int32, Byte[], HashAlgorithmName)	Verifies that a digital signature is appropriate for the current key and provided portion of data with a specified hash algorithm.
VerifyData(Byte[], Int32, Int32, Byte[], HashAlgorithmName, DSASignatureFormat)	Verifies that a digital signature is valid for the provided data.

VerifyData(Byte[], Byte[], HashAlgorithmName)

Source:

ECDsa.cs

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

public:
 bool VerifyData(cli::array <System::Byte> ^ data, cli::array <System::Byte> ^ signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm);

public bool VerifyData (byte[] data, byte[] signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm);

member this.VerifyData : byte[] * byte[] * System.Security.Cryptography.HashAlgorithmName -> bool

Public Function VerifyData (data As Byte(), signature As Byte(), hashAlgorithm As HashAlgorithmName) As Boolean

Parameters

data

Byte[]

The signed data.

signature

Byte[]

The signature data to be verified.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to create the hash value of the data.

Returns

Boolean

true if the signature is valid; otherwise, false.

Exceptions

ArgumentNullException

data is null.

-or-

signature is null.

ArgumentException

hashAlgorithm.Name is null or Empty.

VerifyData(Stream, Byte[], HashAlgorithmName)

Source:

ECDsa.cs

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

public:
 bool VerifyData(System::IO::Stream ^ data, cli::array <System::Byte> ^ signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm);

public bool VerifyData (System.IO.Stream data, byte[] signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm);

member this.VerifyData : System.IO.Stream * byte[] * System.Security.Cryptography.HashAlgorithmName -> bool

Public Function VerifyData (data As Stream, signature As Byte(), hashAlgorithm As HashAlgorithmName) As Boolean

Parameters

data

Stream

The signed data.

signature

Byte[]

The signature data to be verified.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to create the hash value of the data.

Returns

Boolean

true if the signature is valid; otherwise, false.

Exceptions

ArgumentNullException

data is null.

-or-

signature is null.

ArgumentException

hashAlgorithm.Name is null or Empty.

VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName)

Source:

ECDsa.cs

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

public:
 virtual bool VerifyData(ReadOnlySpan<System::Byte> data, ReadOnlySpan<System::Byte> signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm);

public virtual bool VerifyData (ReadOnlySpan<byte> data, ReadOnlySpan<byte> signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm);

abstract member VerifyData : ReadOnlySpan<byte> * ReadOnlySpan<byte> * System.Security.Cryptography.HashAlgorithmName -> bool
override this.VerifyData : ReadOnlySpan<byte> * ReadOnlySpan<byte> * System.Security.Cryptography.HashAlgorithmName -> bool

Public Overridable Function VerifyData (data As ReadOnlySpan(Of Byte), signature As ReadOnlySpan(Of Byte), hashAlgorithm As HashAlgorithmName) As Boolean

Parameters

data

ReadOnlySpan<Byte>

The signed data.

signature

ReadOnlySpan<Byte>

The signature to be verified.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to create the hash value of the data.

Returns

Boolean

true if the signature is valid; otherwise, false.

Exceptions

ArgumentException

hashAlgorithm.Name is null or Empty.

VerifyData(Byte[], Byte[], HashAlgorithmName, DSASignatureFormat)

Source:

ECDsa.cs

Verifies that a digital signature is valid for the provided data.

public:
 bool VerifyData(cli::array <System::Byte> ^ data, cli::array <System::Byte> ^ signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm, System::Security::Cryptography::DSASignatureFormat signatureFormat);

public bool VerifyData (byte[] data, byte[] signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, System.Security.Cryptography.DSASignatureFormat signatureFormat);

member this.VerifyData : byte[] * byte[] * System.Security.Cryptography.HashAlgorithmName * System.Security.Cryptography.DSASignatureFormat -> bool

Public Function VerifyData (data As Byte(), signature As Byte(), hashAlgorithm As HashAlgorithmName, signatureFormat As DSASignatureFormat) As Boolean

Parameters

data

Byte[]

The signed data.

signature

Byte[]

The signature to verify.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to hash the data for the verification process.

signatureFormat

DSASignatureFormat

The encoding format for signature.

Returns

Boolean

true if the digital signature is valid for the provided data; otherwise, false.

Exceptions

ArgumentNullException

data or signature is null.

ArgumentOutOfRangeException

signatureFormat is not a known format.

ArgumentException

hashAlgorithm has a null or empty Name.

CryptographicException

An error occurred in the hashing or verification operation.

VerifyData(Stream, Byte[], HashAlgorithmName, DSASignatureFormat)

Source:

ECDsa.cs

Verifies that a digital signature is valid for the provided data.

public:
 bool VerifyData(System::IO::Stream ^ data, cli::array <System::Byte> ^ signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm, System::Security::Cryptography::DSASignatureFormat signatureFormat);

public bool VerifyData (System.IO.Stream data, byte[] signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, System.Security.Cryptography.DSASignatureFormat signatureFormat);

member this.VerifyData : System.IO.Stream * byte[] * System.Security.Cryptography.HashAlgorithmName * System.Security.Cryptography.DSASignatureFormat -> bool

Public Function VerifyData (data As Stream, signature As Byte(), hashAlgorithm As HashAlgorithmName, signatureFormat As DSASignatureFormat) As Boolean

Parameters

data

Stream

The signed data.

signature

Byte[]

The signature to verify.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to hash the data for the verification process.

signatureFormat

DSASignatureFormat

The encoding format for signature.

Returns

Boolean

true if the digital signature is valid for the provided data; otherwise, false.

Exceptions

ArgumentNullException

data or signature is null.

ArgumentOutOfRangeException

signatureFormat is not a known format.

ArgumentException

hashAlgorithm has a null or empty Name.

CryptographicException

An error occurred in the hashing or verification operation.

VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)

Source:

ECDsa.cs

Verifies that a digital signature is valid for the provided data.

public:
 bool VerifyData(ReadOnlySpan<System::Byte> data, ReadOnlySpan<System::Byte> signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm, System::Security::Cryptography::DSASignatureFormat signatureFormat);

public bool VerifyData (ReadOnlySpan<byte> data, ReadOnlySpan<byte> signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, System.Security.Cryptography.DSASignatureFormat signatureFormat);

member this.VerifyData : ReadOnlySpan<byte> * ReadOnlySpan<byte> * System.Security.Cryptography.HashAlgorithmName * System.Security.Cryptography.DSASignatureFormat -> bool

Public Function VerifyData (data As ReadOnlySpan(Of Byte), signature As ReadOnlySpan(Of Byte), hashAlgorithm As HashAlgorithmName, signatureFormat As DSASignatureFormat) As Boolean

Parameters

data

ReadOnlySpan<Byte>

The signed data.

signature

ReadOnlySpan<Byte>

The signature to verify.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to hash the data for the verification process.

signatureFormat

DSASignatureFormat

The encoding format for signature.

Returns

Boolean

true if the digital signature is valid for the provided data; otherwise, false.

Exceptions

ArgumentOutOfRangeException

signatureFormat is not a known format.

CryptographicException

An error occurred in the hashing or verification operation.

VerifyData(Byte[], Int32, Int32, Byte[], HashAlgorithmName)

Source:

ECDsa.cs

Verifies that a digital signature is appropriate for the current key and provided portion of data with a specified hash algorithm.

public:
 virtual bool VerifyData(cli::array <System::Byte> ^ data, int offset, int count, cli::array <System::Byte> ^ signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm);

public virtual bool VerifyData (byte[] data, int offset, int count, byte[] signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm);

abstract member VerifyData : byte[] * int * int * byte[] * System.Security.Cryptography.HashAlgorithmName -> bool
override this.VerifyData : byte[] * int * int * byte[] * System.Security.Cryptography.HashAlgorithmName -> bool

Public Overridable Function VerifyData (data As Byte(), offset As Integer, count As Integer, signature As Byte(), hashAlgorithm As HashAlgorithmName) As Boolean

Parameters

data

Byte[]

The signed data.

offset

Int32

The starting index at which to compute the hash.

count

Int32

The number of bytes to hash.

signature

Byte[]

The signature data to be verified.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to create the hash value of the data.

Returns

Boolean

true if the signature is valid; otherwise, false.

Exceptions

ArgumentNullException

data is null.

-or-

signature is null.

ArgumentException

hashAlgorithm.Name is null or Empty.

ArgumentOutOfRangeException

offset is less than zero.

-or-

count is less than zero.

-or-

offset + count - 1 results in an index that is beyond the upper bound of data.

VerifyData(Byte[], Int32, Int32, Byte[], HashAlgorithmName, DSASignatureFormat)

Source:

ECDsa.cs

Verifies that a digital signature is valid for the provided data.

public:
 bool VerifyData(cli::array <System::Byte> ^ data, int offset, int count, cli::array <System::Byte> ^ signature, System::Security::Cryptography::HashAlgorithmName hashAlgorithm, System::Security::Cryptography::DSASignatureFormat signatureFormat);

public bool VerifyData (byte[] data, int offset, int count, byte[] signature, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, System.Security.Cryptography.DSASignatureFormat signatureFormat);

member this.VerifyData : byte[] * int * int * byte[] * System.Security.Cryptography.HashAlgorithmName * System.Security.Cryptography.DSASignatureFormat -> bool

Public Function VerifyData (data As Byte(), offset As Integer, count As Integer, signature As Byte(), hashAlgorithm As HashAlgorithmName, signatureFormat As DSASignatureFormat) As Boolean

Parameters

data

Byte[]

An array that contains the signed data.

offset

Int32

The starting index of the signed portion of data.

count

Int32

The number of bytes in data that were signed.

signature

Byte[]

The signature to verify.

hashAlgorithm

HashAlgorithmName

The hash algorithm used to hash the data for the verification process.

signatureFormat

DSASignatureFormat

The encoding format for signature.

Returns

Boolean

true if the digital signature is valid for the provided data; otherwise, false.

Exceptions

ArgumentNullException

data or signature is null.

ArgumentOutOfRangeException

signatureFormat is not a known format.

-or-

offset is less than zero.

-or-

count is less than zero.

-or-

offset + count - 1 results in an index that is beyond the upper bound of data.

ArgumentException

hashAlgorithm has a null or empty Name.

CryptographicException

An error occurred in the hashing or verification operation.