StrongNameGetPublicKeyEx Method

Article
09/15/2021

Gets the public key from a public/private key pair, and specifies a hash algorithm and a signature algorithm.

Syntax

HRESULT StrongNameGetPublicKey (
    [in]  LPCWSTR   pwzKeyContainer,  
    [in]  BYTE      *pbKeyBlob,  
    [in]  ULONG     cbKeyBlob,  
    [out] BYTE      **ppbPublicKeyBlob,  
    [out] ULONG     *pcbPublicKeyBlob  
    [in]  ULONG     uHashAlgId,  
    [in]  ULONG     uReserved,  
);

Parameters

pwzKeyContainer
[in] The name of the key container that contains the public/private key pair. If pbKeyBlob is null, szKeyContainer must specify a valid container within the cryptographic service provider (CSP). In this case, the StrongNameGetPublicKeyEx method extracts the public key from the key pair stored in the container.

If pbKeyBlob is not null, the key pair is assumed to be contained in the key binary large object (BLOB).

The keys must be 1024-bit Rivest-Shamir-Adleman (RSA) signing keys. No other types of keys are supported at this time.

pbKeyBlob
[in] A pointer to the public/private key pair. This pair is in the format created by the Win32 CryptExportKey function. If pbKeyBlob is null, the key container specified by szKeyContainer is assumed to contain the key pair.

cbKeyBlob
[in] The size, in bytes, of pbKeyBlob.

ppbPublicKeyBlob
[out] The returned public key BLOB. The ppbPublicKeyBlob parameter is allocated by the common language runtime and returned to the caller. The caller must free the memory by using the ICLRStrongName::StrongNameFreeBuffer method.

pcbPublicKeyBlob
[out] The size of the returned public key BLOB.

uHashAlgId
[in] The assembly hash algorithm. See the Remarks section for a list of accepted values.

uReserved
[in] Reserved for future use; defaults to null.

Return Value

S_OK if the method completed successfully; otherwise, an HRESULT value that indicates failure (see Common HRESULT Values for a list).

Remarks

The public key is contained in a PublicKeyBlob structure.

The following table shows the set of accepted values for the uHashAlgId parameter.

Name	Value
None	0
SHA-1	0x8004
SHA-256	0x800c
SHA-384	0x800d
SHA-512	0x800e

Requirements

Platforms: See System Requirements.

Header: MetaHost.h

Library: Included as a resource in MSCorEE.dll

.NET Framework Versions: Available since 4.5

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