RSA::VerifyData Method (array<Byte>^, Int32, Int32, array<Byte>^, HashAlgorithmName, RSASignaturePadding^)
Verifies that a digital signature is valid by calculating the hash value of the data in a portion of a byte array using the specified hash algorithm and padding, and comparing it to the provided signature.
Assembly: mscorlib (in mscorlib.dll)
public: virtual bool VerifyData( array<unsigned char>^ data, int offset, int count, array<unsigned char>^ signature, HashAlgorithmName hashAlgorithm, RSASignaturePadding^ padding )
Parameters
- data
-
Type:
array<System::Byte>^
The signed data.
- offset
-
Type:
System::Int32
The starting index at which to compute the hash.
- count
-
Type:
System::Int32
The number of bytes to hash.
- signature
-
Type:
array<System::Byte>^
The signature data to be verified.
- hashAlgorithm
-
Type:
System.Security.Cryptography::HashAlgorithmName
The hash algorithm used to create the hash value of the data.
- padding
-
Type:
System.Security.Cryptography::RSASignaturePadding^
The padding mode.
| Exception | Condition |
|---|---|
| ArgumentNullException | data is null. -or- signature is null. -or- padding is null. |
| ArgumentException | hashAlgorithm.Name is null or String::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. |
Available since 4.6