PKCS5_v2_scrypt_keyivgen
{ EVP_PBE_TYPE_KDF, NID_id_scrypt, -1, -1, PKCS5_v2_scrypt_keyivgen, &PKCS5_v2_scrypt_keyivgen_ex }
int PKCS5_v2_scrypt_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,