

#include <twl/os/common/systemCall.h>
void SVC_CalcHMACSHA1( void* md,
const void* data,
u32 len,
const void* key,
u32 keylen );
| md | Pointer to the memory location that holds the calculated SHA-1 value. |
| data | Pointer to the input data. |
| len | Size of the input data. |
| key | Pointer to key text string |
| keylen | Size of the key string. |
None.
Performs HMAC-SHA1 calculations.
This is a utility function that successively calls the SVC_HMACSHA1Init(), SVC_HMACSHA1Update(), and SVC_HMACSHA1GetHash() functions. Internally, the SVCHMACSHA1Context structure is allocated to the stack, so make sure you have sufficient stack space when calling the function.
The length of the generated SHA-1 value is 160 bits, or SVC_SHA1_DIGEST_SIZE (= 20) bytes. Use the md argument to pass an area that can store a value of this size.
Specify the input data using data and len. Any size and alignment position can be used.
Specify the key string using key and keylen.
SVC_HMACSHA1Init, SVC_HMACSHA1Update, SVC_HMACSHA1GetHash, SVC_CalcSHA1
2007/10/24 Initial version.
CONFIDENTIAL