NAME EncryptData, CSSM_EncryptData, CSP_EncryptData - Encrypts all buffer data (CDSA) SYNOPSIS # include <cssm.h> API: CSSM_RETURN CSSMAPI CSSM_EncryptData (CSSM_CC_HANDLE CCHandle, const CSSM_DATA *ClearBufs, uint32 ClearBufCount, CSSM_DATA_PTR CipherBufs, uint32 CipherBufCount, uint32 *bytesEncrypted, CSSM_DATA_PTR RemData) SPI: CSSM_RETURN CSSMCSPI CSP_EncryptData (CSSM_CSP_HANDLE CSPHandle, CSSM_CC_HANDLE CCHandle, const CSSM_CONTEXT *Context, const CSSM_DATA *ClearBufs, uint32 ClearBufCount, CSSM_DATA_PTR CipherBufs, uint32 CipherBufCount, uint32 *bytesEncrypted, CSSM_DATA_PTR RemData, CSSM_PRIVILEGE Privilege) LIBRARY Common Security Services Manager library (CDSA$INCSSM300_SHR.EXE) API PARAMETERS CCHandle (input) The handle that describes the context of this cryptographic operation used to link to the CSP-managed information. ClearBufs (input) A pointer to a vector of CSSM_DATA structures that contain the data to be operated on. ClearBufCount (input) The number of ClearBufs. CipherBufs (output) A pointer to a vector of CSSM_DATA structures that contain the results of the operation on the data. CipherBufCount (input) The number of CipherBufs. bytesEncrypted (output) A pointer to uint32 for the size of the encrypted data in bytes. RemData (output) A pointer to the CSSM_DATA structure for the remaining cipher text if there is not enough buffer space available in the output data structures. SPI PARAMETERS CSPHandle (input) The handle that describes the add-in cryptographic service provider module used to perform calls to CSSM for the memory functions managed by CSSM. Context (input) Pointer to CSSM_CONTEXT structure that describes the attributes with this context. Privilege (input) The export privilege to be applied during the cryptographic operation. This parameter is forwarded to the CSP after CSSM verifies the caller and service provider privilege set includes the specified PRIVILEGE. DESCRIPTION This function encrypts all data contained in the set of input buffers using information in the context. The CSSM_QuerySize() function can be used to estimate the output buffer size required. The minimum number of buffers required to contain the resulting cipher text is produced as output. If the cipher text result does not fit within the set of output buffers, the remaining cipher text is returned in the single output buffer RemData. The CSP can require that the cryptographic context include access credentials for authentication and authorization checks when using a private key or a secret key. NOTES FOR API The output is returned to the caller either by filling the caller- specified buffer or by using the application's declared memory allocation functions to allocate buffer space. To specify a specific, preallocated output buffer, the caller must provide an array of one or more CSSM_DATA structures, each containing a Length field value greater than zero and a non-NULL data pointer field value. To specify automatic output buffer allocation by the CSP, the caller must provide an array of one or more CSSM_DATA structures, each containing a Length field value equal to zero and a NULL Data pointer field value. The application is always responsible for deallocating the memory when it is no longer needed. In-place encryption can be done by supplying the same input and output buffers. NOTES FOR SPI The output is returned to the caller as specified in Buffer Management for Cryptographic Services. RETURN VALUE A CSSM_RETURN value indicating success or specifying a particular error condition. The value CSSM_OK indicates success. All other values represent an error condition. ERRORS Errors are described in the CDSA technical standard. See CDSA. CSSMERR_CSP_BLOCK_SIZE_MISMATCH CSSMERR_CSP_OUTPUT_LENGTH_ERROR SEE ALSO Books Intel CDSA Application Developer's Guide (see CDSA) Other Help Topics Functions for the CSSM API: CSSM_QuerySize CSSM_DecryptData CSSM_EncryptDataInit CSSM_EncryptDataUpdate CSSM_EncryptDataFinal CSSM_EncryptDataP CSSM_EncryptDataInitP CSSM_DecryptP CSSM_DecryptDataInitP Functions for the CSP SPI: CSP_QuerySize CSP_DecryptData CSP_EncryptDataInit CSP_EncryptDataUpdate CSP_EncryptDataFinal