Decrypt Method

Decrypts data using a key.

Syntax

• C++
• Objective-C
• C

ANSI (Cross Platform)
int Decrypt(const char* lpszKeyName, const char* lpszVersionId);

Unicode (Windows)
INT Decrypt(LPCWSTR lpszKeyName, LPCWSTR lpszVersionId);

- (void)decrypt:(NSString*)keyName :(NSString*)versionId;

#define MID_GOOGLEKMS_DECRYPT 9

CLOUDKEYS_EXTERNAL int CLOUDKEYS_CALL CloudKeys_GoogleKMS_Do(void *lpObj, int methid, int cparam, void *param[], int cbparam[], int64 *lpllVal);

Remarks

This method decrypts data using the key specified by KeyName and (for asymmetric keys) VersionId.

The data to decrypt is taken from the input stream supplied via the SetInputStream method, the specified InputFile, or the InputData property. The decrypted data is output to the output stream supplied via the SetOutputStream method, the specified OutputFile, or the OutputData property.

For symmetric keys, VersionId must be empty; the server automatically detects which version of the symmetric key to use for decryption.

For asymmetric keys, VersionId must be specified.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)