

#include <twl/os/common/systemCall.h>
int SVC_DectyptSignDER( const SVCSignHeapContext* acmemory_pool,
void* buffer,
const void* sgn_ptr,
const void_ key_ptr );
| acmemory_pool | Pointer to the heap information. |
| buffer | Pointer to the output data buffer. |
| sgn_ptr | Pointer to the digital signature data. |
| key_ptr | Pointer to the public key data. |
Returns FALSE if one of the pointers in the arguments is NULL or if the digital signature is not in the DER format. Returns TRUE otherwise.
Decrypts DER-format signed data using the specified public key.
acmemory_pool is a pointer to the SVCSignHeapContext structure where information about the heap area used for the operation is stored. This is initialized by the SVC_InitSignHeap function.
buffer is a pointer to the output data buffer. The decrypted data is stored here.
Note: The output size is fixed at SVC_SHA1_DIGEST_SIZE (20 bytes).
sgn_ptr is a pointer to the digital signature data to decrypt.
key_ptr is a pointer to the public key data to use for decryption.
Only a 1024-bit key length is supported for the public key. See the key creation example in the CRYPTO library's RSA encryption overview for information on how to create a key.
SVC_InitSignHeap, SVC_DecryptRSA, SVC_DecryptSign
2008/09/18 Added an explanation related to keys.
2008/05/22 Added a note on the output data size.
2007/10/19 Initial version.
CONFIDENTIAL