/*****************************************************************************
* additional validation-functions *
*****************************************************************************/
void testrun_stdtest_ubi256(uint16_t outsize){
ubi256_ctx_t ctx;
skein_config_t conf;
uint64_t iv[4];
cli_putstr_P(PSTR("\r\n\r\nTest vectors for UBI (256 bits):"));
memset(&conf, 0, sizeof(skein_config_t));
ubi256_init(&ctx, &conf, UBI_TYPE_CFG);
conf.schema[0] = 'S';
conf.schema[1] = 'H';
conf.schema[2] = 'A';
conf.schema[3] = '3';
conf.version = 1;
conf.out_length = outsize;
ubi256_lastBlock(&ctx, &conf, 256);
ubi256_ctx2hash(iv, &ctx);
cli_putstr_P(PSTR("\r\nIV: "));
cli_hexdump_rev(&(iv[0]), 8);
cli_putstr_P(PSTR(" "));
cli_hexdump_rev(&(iv[1]), 8);
cli_putstr_P(PSTR(" "));
cli_hexdump_rev(&(iv[2]), 8);
cli_putstr_P(PSTR(" "));
cli_hexdump_rev(&(iv[3]), 8);
}
void skein256_ctx2hash(void *dest, skein256_ctx_t *ctx){
ubi256_ctx_t uctx;
uint16_t outsize_b;
uint64_t counter=0;
uint8_t outbuffer[UBI256_BLOCKSIZE_B];
ubi256_init(&(ctx->ubictx), ctx->ubictx.g, UBI_TYPE_OUT);
outsize_b = ctx->outsize_b;
while(1){
memcpy(&uctx, &(ctx->ubictx), sizeof(ubi256_ctx_t));
ubi256_lastBlock(&uctx, &counter, 64);
ubi256_ctx2hash(outbuffer, &uctx);
if(outsize_b<=UBI256_BLOCKSIZE){
memcpy(dest, outbuffer, (outsize_b+7)/8);
break;
}else{
memcpy(dest, outbuffer, UBI256_BLOCKSIZE_B);
dest = (uint8_t*)dest + UBI256_BLOCKSIZE_B;
outsize_b -= UBI256_BLOCKSIZE;
counter++;
}
}
}
