56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
#include "brfunc_aes.h"
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#include "brfunc_timing.h"
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#include "brfunc_sep.h"
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int aes_hw_crypto_command(unsigned int cmd,
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void *src,
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void *dst,
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int len,
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unsigned int opts,
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void *key,
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void *iv)
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{
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int seeded;
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long start = 0, timeout = 0;
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CLOCK_GATE(0x3C, 1);
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seeded = DPA_SEEDED();
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if(!seeded)
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{
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SEP_CREATE_SEND_DPA_MESSAGE();
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start = SYSTEM_TIME();
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while(!seeded && !timeout)
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{
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seeded = DPA_SEEDED();
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timeout = TIME_HAS_ELAPSED(start, 1000);
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}
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}
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if(timeout) return -1;
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unsigned int key_command = CREATE_KEY_COMMAND(0, 0, 0, 0, 1, 0, 0, 0);
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*rAES_INT_STATUS = 0x20;
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*rAES_CONTROL = 1;
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PUSH_COMMAND_KEY(key_command, key);
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PUSH_COMMAND_IV(0, 0, 0, iv);
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PUSH_COMMAND_DATA(0, 0, src, dst, len);
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PUSH_COMMAND_FLAG(0, 1, 1);
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WAIT_FOR_COMMAND_FLAG();
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*rAES_CONTROL = 2;
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CLOCK_GATE(0x3C, 0);
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return 0;
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}
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int _start(unsigned int cmd,
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void *src,
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void *dst,
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int len,
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unsigned int opts,
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void *key,
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void *iv)
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{
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return aes_hw_crypto_command(cmd, src, dst, len, opts, key, iv);
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} |