void md5_final (uint8_t digest[16],md5ctx *ctx) {
uint8_t bits[8];
uint32_t indx,padleng;
md5_encode(bits,ctx->count,2);
indx = (uint32_t)((ctx->count[0]>>3)&0x3f);
padleng = (indx<56)?(56-indx):(120-indx);
md5_update (ctx,padding,padleng);
md5_update(ctx,bits,8);
md5_encode(digest,ctx->state,4);
memset((char*)ctx,0,sizeof(md5ctx));
}
/**
@brief md5 finalisation. Ends an md5 message-digest operation, writing the
message digest and zeroing the context.
*/
void md5_final(uint8_t digest[16], md5_ctx *context)
{
uint8_t bits[8];
uint32_t index, padLen;
// Save number of bits
md5_encode(bits, context->count, 8);
// Pad out to 56 mod 64.
index = (uint32_t)((context->count[0] >> 3) & 0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
md5_update(context, padding, padLen);
// Append length (before padding)
md5_update(context, bits, 8);
// Store state in digest
md5_encode(digest, context->state, 16);
// Zero sensitive information.
memset((void*)context,0,sizeof(*context));
}