

#include <twl/os/common/systemCall.h>
void SVC_HMACSHA1Init( SVCHMACSHA1Context* context,
const void* key,
u32 keylen );
typedef struct SVCHMACSHA1Context
{
SVCSHA1Context sha1_ctx;
u8 key[SVC_SHA1_BLOCK_SIZE];
u32 keylen;
}
SVCHMACSHA1Context
| context | Pointer to the context structure to initialize for HMAC-SHA1 generation. |
| key | Key string. |
| keylen | Length of key string. |
None.
Initializes the structure to use when calculating HMAC-SHA1. Make sure that this function is called before using the SVC_HMACSHA1Update or SVC_HMACSHA1GetHash functions.
context is the context structure to initialize for HMAC-SHA1 generation. You can reapply this function to a context structure that is already initialized. In this case, it will return the context structure to its initial state.
In key and keylen, specify the key string to provide to HMAC-SHA1. Keys up to SVC_SHA1_BLOCK_SIZE (=64) bytes can be specified.
SVC_HMACSHA1Update, SVC_HMACSHA1GetHash, SVC_SHA1Init
2007/10/24 Initial version.
CONFIDENTIAL