SHA256_Transform
LCRYPTO_USED(SHA256_Transform);
void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
LCRYPTO_ALIAS(SHA256_Transform);
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA256_Transform;
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA256_Transform;